@article{OezkanFikriKırkıcıetal.2020,
  author    = {{\"O}zkan, Ay{\c{s}}eg{\"u}l and Fikri, Figen Beken and K{\i}rk{\i}c{\i}, Bilal and Kliegl, Reinhold and Acart{\"u}rk, Cengiz},
  title     = {Eye movement control in Turkish sentence reading},
  series = {Quarterly journal of experimental psychology : QJEP / EPS, Experimental Psychology Society},
  volume    = {74},
  journal   = {Quarterly journal of experimental psychology : QJEP / EPS, Experimental Psychology Society},
  number    = {2},
  publisher = {Sage Publ.},
  address   = {London},
  issn      = {1747-0218},
  doi       = {10.1177/1747021820963310},
  pages     = {377 -- 397},
  year      = {2020},
  abstract  = {Reading requires the assembly of cognitive processes across a wide spectrum from low-level visual perception to high-level discourse comprehension. One approach of unravelling the dynamics associated with these processes is to determine how eye movements are influenced by the characteristics of the text, in particular which features of the words within the perceptual span maximise the information intake due to foveal, spillover, parafoveal, and predictive processing. One way to test the generalisability of current proposals of such distributed processing is to examine them across different languages. For Turkish, an agglutinative language with a shallow orthography-phonology mapping, we replicate the well-known canonical main effects of frequency and predictability of the fixated word as well as effects of incoming saccade amplitude and fixation location within the word on single-fixation durations with data from 35 adults reading 120 nine-word sentences. Evidence for previously reported effects of the characteristics of neighbouring words and interactions was mixed. There was no evidence for the expected Turkish-specific morphological effect of the number of inflectional suffixes on single-fixation durations. To control for word-selection bias associated with single-fixation durations, we also tested effects on word skipping, single-fixation, and multiple-fixation cases with a base-line category logit model, assuming an increase of difficulty for an increase in the number of fixations. With this model, significant effects of word characteristics and number of inflectional suffixes of foveal word on probabilities of the number of fixations were observed, while the effects of the characteristics of neighbouring words and interactions were mixed.},
  language  = {en}
}
@article{ZhouWangShuetal.2018,
  author    = {Zhou, Wei and Wang, Aiping and Shu, Hua and Kliegl, Reinhold and Yan, Ming},
  title     = {Word segmentation by alternating colors facilitates eye guidance in Chinese reading},
  series = {Memory \& cognition},
  volume    = {46},
  journal   = {Memory \& cognition},
  number    = {5},
  publisher = {Springer},
  address   = {New York},
  issn      = {0090-502X},
  doi       = {10.3758/s13421-018-0797-5},
  pages     = {729 -- 740},
  year      = {2018},
  abstract  = {During sentence reading, low spatial frequency information afforded by spaces between words is the primary factor for eye guidance in spaced writing systems, whereas saccade generation for unspaced writing systems is less clear and under debate. In the present study, we investigated whether word-boundary information, provided by alternating colors (consistent or inconsistent with word-boundary information) influences saccade-target selection in Chinese. In Experiment 1, as compared to a baseline (i.e., uniform color) condition, word segmentation with alternating color shifted fixation location towards the center of words. In contrast, incorrect word segmentation shifted fixation location towards the beginning of words. In Experiment 2, we used a gaze-contingent paradigm to restrict the color manipulation only to the upcoming parafoveal words and replicated the results, including fixation location effects, as observed in Experiment 1. These results indicate that Chinese readers are capable of making use of parafoveal word-boundary knowledge for saccade generation, even if such information is unfamiliar to them. The present study provides novel support for the hypothesis that word segmentation is involved in the decision about where to fixate next during Chinese reading.},
  language  = {en}
}
@article{ZhouKlieglYan2013,
  author    = {Zhou, Wei and Kliegl, Reinhold and Yan, Ming},
  title     = {A validation of parafoveal semantic information extraction in reading Chinese},
  series = {Journal of research in reading : a journal of the United Kingdom Reading Association},
  volume    = {36},
  journal   = {Journal of research in reading : a journal of the United Kingdom Reading Association},
  number    = {2},
  publisher = {Wiley-Blackwell},
  address   = {Hoboken},
  issn      = {0141-0423},
  doi       = {10.1111/j.1467-9817.2013.01556.x},
  pages     = {S51 -- S63},
  year      = {2013},
  abstract  = {Parafoveal semantic processing has recently been well documented in reading Chinese sentences, presumably because of language-specific features. However, because of a large variation of fixation landing positions on pretarget words, some preview words actually were located in foveal vision when readers' eyes landed close to the end of the pretarget words. None of the previous studies has completely ruled out a possibility that the semantic preview effects might mainly arise from these foveally processed preview words. This case, whether previously observed positive evidence for parafoveal semantic processing can still hold, has been called into question. Using linear mixed models, we demonstrate in this study that semantic preview benefit from word N+1 decreased if fixation on pretarget word N was close to the preview. We argue that parafoveal semantic processing is not a consequence of foveally processed preview words.},
  language  = {en}
}
@article{YanZhouShuetal.2014,
  author    = {Yan, Ming and Zhou, Wei and Shu, Hua and Yusupu, Rizwangul and Miao, Dongxia and Kruegel, Andre and Kliegl, Reinhold},
  title     = {Eye movements guided by morphological structure: Evidence from the Uighur language},
  series = {Cognition : international journal of cognitive science},
  volume    = {132},
  journal   = {Cognition : international journal of cognitive science},
  number    = {2},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0010-0277},
  doi       = {10.1016/j.cognition.2014.03.008},
  pages     = {181 -- 215},
  year      = {2014},
  abstract  = {It is generally accepted that low-level features (e.g., inter-word spaces) are responsible for saccade-target selection in eye-movement control during reading. In two experiments using Uighur script known for its rich suffixes, we demonstrate that, in addition to word length and launch site, the number of suffixes influences initial landing positions. We also demonstrate an influence of word frequency. These results are difficult to explain purely by low-level guidance of eye movements and indicate that due to properties specific to Uighur script low-level visual information and high-level information such as morphological structure of parafoveal words jointly influence saccade programming. (C) 2014 Elsevier B.V. All rights reserved.},
  language  = {en}
}
@article{YanZhouShuetal.2012,
  author    = {Yan, Ming and Zhou, Wei and Shu, Hua and Kliegl, Reinhold},
  title     = {Lexical and sublexical semantic preview benefits in chinese reading},
  series = {Journal of experimental psychology : Learning, memory, and cognition},
  volume    = {38},
  journal   = {Journal of experimental psychology : Learning, memory, and cognition},
  number    = {4},
  publisher = {American Psychological Association},
  address   = {Washington},
  issn      = {0278-7393},
  doi       = {10.1037/a0026935},
  pages     = {1069 -- 1075},
  year      = {2012},
  abstract  = {Semantic processing from parafoveal words is an elusive phenomenon in alphabetic languages, but it has been demonstrated only for a restricted set of noncompound Chinese characters. Using the gaze-contingent boundary paradigm, this experiment examined whether parafoveal lexical and sublexical semantic information was extracted from compound preview characters. Results generalized parafoveal semantic processing to this representative set of Chinese characters and extended the parafoveal processing to radical (sublexical) level semantic information extraction. Implications for notions of parafoveal information extraction during Chinese reading are discussed.},
  language  = {en}
}
@article{YanZhouShuetal.2015,
  author    = {Yan, Ming and Zhou, Wei and Shu, Hua and Kliegl, Reinhold},
  title     = {Perceptual span depends on font size during the reading of chinese sentences},
  series = {Journal of experimental psychology : Learning, memory, and cognition},
  volume    = {41},
  journal   = {Journal of experimental psychology : Learning, memory, and cognition},
  number    = {1},
  publisher = {American Psychological Association},
  address   = {Washington},
  issn      = {0278-7393},
  doi       = {10.1037/a0038097},
  pages     = {209 -- 219},
  year      = {2015},
  abstract  = {The present study explored the perceptual span (i.e., the physical extent of an area from which useful visual information is extracted during a single fixation) during the reading of Chinese sentences in 2 experiments. In Experiment 1, we tested whether the rightward span can go beyond 3 characters when visually similar masks were used. Results showed that Chinese readers needed at least 4 characters to the right of fixation to maintain a normal reading behavior when visually similar masks were used and when characters were displayed in small fonts, indicating that the span is dynamically influenced by masking materials. In Experiments 2 and 3, we asked whether the perceptual span varies as a function of font size in spaced (German) and unspaced (Chinese) scripts. Results clearly suggest perceptual span depends on font size in Chinese, but we failed to find such evidence for German. We propose that the perceptual span in Chinese is flexible; it is strongly constrained by its language-specific properties such as high information density and lack of word spacing. Implications for saccade-target selection during the reading of Chinese sentences are discussed.},
  language  = {en}
}
@article{YanWangSongetal.2019,
  author    = {Yan, Ming and Wang, Aiping and Song, Hosu and Kliegl, Reinhold},
  title     = {Parafoveal processing of phonology and semantics during the reading of Korean sentences},
  series = {Cognition : international journal of cognitive science},
  volume    = {193},
  journal   = {Cognition : international journal of cognitive science},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0010-0277},
  doi       = {10.1016/j.cognition.2019.104009},
  pages     = {7},
  year      = {2019},
  abstract  = {The present study sets out to address two fundamental questions in the reading of continuous texts: Whether semantic and phonological information from upcoming words can be accessed during natural reading. In the present study we investigated parafoveal processing during the reading of Korean sentences, manipulating semantic and phonological information from parafoveal preview words. In addition to the first evidence for a semantic preview effect in Korean, we found that Korean readers have stronger and more long-lasting phonological than semantic activation from parafoveal words in second-pass reading. The present study provides an example that human mind can flexibly adjust processing priority to different types of information based on the linguistic environment.},
  language  = {en}
}
@article{YanRisseZhouetal.2012,
  author    = {Yan, Ming and Risse, Sarah and Zhou, Xiaolin and Kliegl, Reinhold},
  title     = {Preview fixation duration modulates identical and semantic preview benefit in Chinese reading},
  series = {Reading and writing : an interdisciplinary journal},
  volume    = {25},
  journal   = {Reading and writing : an interdisciplinary journal},
  number    = {5},
  publisher = {Springer},
  address   = {Dordrecht},
  issn      = {0922-4777},
  doi       = {10.1007/s11145-010-9274-7},
  pages     = {1093 -- 1111},
  year      = {2012},
  abstract  = {Semantic preview benefit from parafoveal words is critical for proposals of distributed lexical processing during reading. Semantic preview benefit has been demonstrated for Chinese reading with the boundary paradigm in which unrelated or semantically related previews of a target word N + 1 are replaced by the target word once the eyes cross an invisible boundary located after word N (Yan et al., 2009); for the target word in position N + 2, only identical compared to unrelated-word preview led to shorter fixation times on the target word (Yan et al., in press). A reanalysis of these data reveals that identical and semantic preview benefits depend on preview duration (i.e., the fixation duration on the preboundary word). Identical preview benefit from word N + 1 increased with preview duration. The identical preview benefit was also significant for N + 2, but did not significantly interact with preview duration. The previously reported semantic preview benefit from word N + 1 was mainly due to single- or first-fixation durations following short previews. We discuss implications for notions of serial attention shifts and parallel distributed processing of words during reading.},
  language  = {en}
}
@article{YanRichterShuetal.2009,
  author    = {Yan, Ming and Richter, Eike M. and Shu, Hua and Kliegl, Reinhold},
  title     = {Readers of Chinese extract semantic information from parafoveal words},
  issn      = {1069-9384},
  doi       = {10.3758/Pbr.16.3.561},
  year      = {2009},
  abstract  = {Evidence for semantic preview benefit (PB) from parafoveal words has been elusive for reading alphabetic scripts such as English. Here we report semantic PB for noncompound characters in Chinese reading with the boundary paradigm. In addition, PBs for orthographic relatedness and, as a numeric trend, for phonological relatedness were obtained. Results are in agreement with other research suggesting that the Chinese writing system is based on a closer association between graphic form and meaning than is alphabetic script. We discuss implications for notions of serial attention shifts and parallel distributed processing of words during reading.},
  language  = {en}
}
@article{YanPanLaubrocketal.2013,
  author    = {Yan, Ming and Pan, Jinger and Laubrock, Jochen and Kliegl, Reinhold and Shu, Hua},
  title     = {Parafoveal processing efficiency in rapid automatized naming a comparison between Chinese normal and dyslexic children},
  series = {Journal of experimental child psychology},
  volume    = {115},
  journal   = {Journal of experimental child psychology},
  number    = {3},
  publisher = {Elsevier},
  address   = {San Diego},
  issn      = {0022-0965},
  doi       = {10.1016/j.jecp.2013.01.007},
  pages     = {579 -- 589},
  year      = {2013},
  abstract  = {Dyslexic children are known to be slower than normal readers in rapid automatized naming (RAN). This suggests that dyslexics encounter local processing difficulties, which presumably induce a narrower perceptual span. Consequently, dyslexics should suffer less than normal readers from removing parafoveal preview. Here we used a gaze-contingent moving window paradigm in a RAN task to experimentally test this prediction. Results indicate that dyslexics extract less parafoveal information than control children. We propose that more attentional resources are recruited to the foveal processing because of dyslexics' less automatized translation of visual symbols into phonological output, thereby causing a reduction of the perceptual span. This in turn leads to less efficient preactivation of parafoveal information and, hence, more difficulty in processing the next foveal item.},
  language  = {en}
}
@article{YanPanKliegl2019,
  author    = {Yan, Ming and Pan, Jinger and Kliegl, Reinhold},
  title     = {Eye Movement Control in Chinese Reading: A Cross-Sectional Study},
  series = {Developmental psychology},
  volume    = {55},
  journal   = {Developmental psychology},
  number    = {11},
  publisher = {American Psychological Association},
  address   = {Washington},
  issn      = {0012-1649},
  doi       = {10.1037/dev0000819},
  pages     = {2275 -- 2285},
  year      = {2019},
  abstract  = {The present study explored the age-related changes of eye movement control in reading-that is, where to send the eyes and when to move them. Different orthographies present readers with somewhat different problems to solve, and this might, in turn, be reflected in different patterns of development of reading skill. Participants of different developmental levels (Grade 3, N = 30; Grade 5, N = 27 and adults, N = 27) were instructed to read sentences for comprehension while their eye movements were recorded. Contrary to previous findings that have been well documented indicating early maturation of saccade generation in English, current results showed that saccade generation among Chinese readers was still under development at Grade 5, although immediate lexical processing was relatively well-established. The distinct age-related changes in eye movements are attributable to certain linguistic properties of Chinese including the lack of interword spaces and word boundary uncertainty. The present study offers an example of how human eye movement adapts to the orthographic environment.},
  language  = {en}
}
@article{YanPanChangetal.2019,
  author    = {Yan, Ming and Pan, Jinger and Chang, Wenshuo and Kliegl, Reinhold},
  title     = {Read sideways or not: vertical saccade advantage in sentence reading},
  series = {Reading and writing : an interdisciplinary journal},
  volume    = {32},
  journal   = {Reading and writing : an interdisciplinary journal},
  number    = {8},
  publisher = {Springer},
  address   = {Dordrecht},
  issn      = {0922-4777},
  doi       = {10.1007/s11145-018-9930-x},
  pages     = {1911 -- 1926},
  year      = {2019},
  abstract  = {During the reading of alphabetic scripts and scene perception, eye movements are programmed more efficiently in horizontal direction than in vertical direction. We propose that such a directional advantage may be due the overwhelming reading experience in the horizontal direction. Writing orientation is highly flexible for Traditional Chinese sentences. We compare horizontal and vertical eye movements during reading of such sentences and provide first evidence of a text-orientation effect on eye-movement control during reading. In addition to equivalent reading speed in both directions, more fine-grained analyses demonstrate a tradeoff between longer fixation durations and better fixation locations in vertical than in horizontal reading. Our results suggest that with extensive reading experience, Traditional Chinese readers can generate saccades more efficiently in vertical than in horizontal direction.},
  language  = {en}
}
@article{YanKlieglShuetal.2010,
  author    = {Yan, Ming and Kliegl, Reinhold and Shu, Hua and Pan, Jinger and Zhou, Xiaolin},
  title     = {Parafoveal load of word N+1 modulates preprocessing effectiveness of word N+2 in chinese reading},
  doi       = {10.1037/a0019329},
  year      = {2010},
  language  = {en}
}
@article{YanKlieglRichteretal.2010,
  author    = {Yan, Ming and Kliegl, Reinhold and Richter, Eike M. and Nuthmann, Antje and Shu, Hua},
  title     = {Flexible saccade-target selection in Chinese reading},
  issn      = {1747-0218},
  doi       = {10.1080/17470210903114858},
  year      = {2010},
  abstract  = {As Chinese is written without orthographical word boundaries (i.e., spaces), it is unclear whether saccade targets are selected on the basis of characters or words and whether saccades are aimed at the beginning or the centre of words. Here, we report an experiment where 30 Chinese readers read 150 sentences while their eye movements were monitored. They exhibited a strong tendency to fixate at the word centre in single-fixation cases and at the word beginning in multiple-fixation cases. Different from spaced alphabetic script, initial fixations falling at the end of words were no more likely to be followed by a refixation than initial fixations at word centre. Further, single fixations were shorter than first fixations in two-fixation cases, which is opposite to what is found in Roman script. We propose that Chinese readers dynamically select the beginning or centre of words as saccade targets depending on failure or success with segmentation of parafoveal word boundaries.},
  language  = {en}
}
@article{YanKliegl2016,
  author    = {Yan, Ming and Kliegl, Reinhold},
  title     = {CarPrice versus CarpRice: Word Boundary Ambiguity Influences Saccade Target Selection During the Reading of Chinese Sentences},
  series = {Journal of experimental psychology : Learning, memory, and cognition},
  volume    = {42},
  journal   = {Journal of experimental psychology : Learning, memory, and cognition},
  publisher = {American Psychological Association},
  address   = {Washington},
  issn      = {0278-7393},
  doi       = {10.1037/xlm0000276},
  pages     = {1832 -- 1838},
  year      = {2016},
  abstract  = {As a contribution to a theoretical debate about the degree of high-level influences on saccade targeting during sentence reading, we investigated eye movements during the reading of structurally ambiguous Chinese character strings and examined whether parafoveal word segmentation could influence saccade-target selection. As expected, ambiguous strings took longer to process. More critically there were theoretically relevant interactions between ambiguity and launch site when first-fixation location and saccade amplitude served as dependent variables: Ambiguous strings in the parafovea triggered longer saccades and more rightward fixations for close launch sites than unambiguous ones; the reverse result was obtained for far launch sites. These crossover interactions indicate that parafoveal word segmentation influences saccade generation in Chinese and provide support of the hypothesis that high-level information can be involved in the decision about where to fixate next.},
  language  = {en}
}
@article{WotschackKliegl2013,
  author    = {Wotschack, Christiane and Kliegl, Reinhold},
  title     = {Reading strategy modulates parafoveal-on-foveal effects in sentence reading},
  series = {The quarterly journal of experimental psychology},
  volume    = {66},
  journal   = {The quarterly journal of experimental psychology},
  number    = {3},
  publisher = {Wiley},
  address   = {Hove},
  issn      = {1747-0218},
  doi       = {10.1080/17470218.2011.625094},
  pages     = {548 -- 562},
  year      = {2013},
  abstract  = {Task demands and individual differences have been linked reliably to word skipping during reading. Such differences in fixation probability may imply a selection effect for multivariate analyses of eye-movement corpora if selection effects correlate with word properties of skipped words. For example, with fewer fixations on short and highly frequent words the power to detect parafoveal-on-foveal effects is reduced. We demonstrate that increasing the fixation probability on function words with a manipulation of the expected difficulty and frequency of questions reduces an age difference in skipping probability (i.e., old adults become comparable to young adults) and helps to uncover significant parafoveal-on-foveal effects in this group of old adults. We discuss implications for the comparison of results of eye-movement research based on multivariate analysis of corpus data with those from display-contingent manipulations of target words.},
  language  = {en}
}
@misc{WernerDonnellyKliegl1987,
  author    = {Werner, John S. and Donnelly, Seaneen K. and Kliegl, Reinhold},
  title     = {Aging and human macular pigment density : appended with translations from the work of Max Schultze and Ewald Hering},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-16836},
  year      = {1987},
  abstract  = {The optical density of human macular pigment was measured for 50 observers ranging in age from 10 to 90 years. The psychophysical method required adjusting the radiance of a 1°, monochromatic light (400-550 nm) to minimize flicker (15 Hz) when presented in counterphase with a 460 nm standard. This test stimulus was presented superimposed on a broad-band, short-wave background. Macular pigment density was determined by comparing sensitivity under these conditions for the fovea, where macular pigment is maximal, and 5° temporally. This difference spectrum, measured for 12 observers, matched Wyszecki and Stiles's standard density spectrum for macular pigment. To study variation in macular pigment density for a larger group of observers, measurements were made at only selected spectral points (460, 500 and 550 nm). The mean optical density at 460 nm for the complete sample of 50 subjects was 0.39. Substantial individual differences in density were found (ca. 0.10-0.80), but this variation was not systematically related to age.},
  language  = {en}
}
@misc{WernerCiceroneKliegletal.1984,
  author    = {Werner, John S. and Cicerone, Carola M. and Kliegl, Reinhold and DellaRosa, Denise},
  title     = {Spectral efficiency of blackness induction},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-16897},
  year      = {1984},
  abstract  = {The spectral efficiency of blackness induction was measured in three normal trichromatic observers and in one deuteranomalous observer. The psychophysical task was to adjust the radiance of a monochromatic 60-120′ annulus until a 45′ central broadband field just turned black and its contour became indiscriminable from a dark surrounding gap that separated it from the annulus. The reciprocal of the radiance required to induce blackness with annulus wavelengths between 420 and 680 nm was used to define a spectral-efficiency function for the blackness component of the achromatic process. For each observer, the shape of this blackness-sensitivity function agreed with the spectral-efficiency function based on heterochromatic flicker photometry when measured with the same 60-120′ annulus. Both of these functions matched the Commission Internationale de l'Eclairage Vλ function except at short wavelengths. Ancillary measurements showed that the latter difference in sensitivity can be ascribed to nonuniformities of preretinal absorption, since the annular field excluded the central 60′ of the fovea. Thus our evidence indicates that, at least to a good first approximation, induced blackness is inversely related to the spectral-luminosity function. These findings are consistent with a model that separates the achromatic and the chromatic pathways.},
  language  = {en}
}
@article{WeckJungaKliegletal.2021,
  author    = {Weck, Florian and Junga, Yvonne Marie and Kliegl, Reinhold and Hahn, Daniela and Brucker, Katharina and Witth{\"o}ft, Michael},
  title     = {Effects of competence feedback on therapist competence and patient outcome},
  series = {Journal of consulting and clinical psychology},
  volume    = {89},
  journal   = {Journal of consulting and clinical psychology},
  number    = {11},
  publisher = {American Psychological Association},
  address   = {Washington},
  issn      = {0022-006X},
  doi       = {10.1037/ccp0000686},
  pages     = {885 -- 897},
  year      = {2021},
  abstract  = {Objective: Therapist competence is considered essential for the success of psychotherapy. Feedback is an intervention which has the potential to improve therapist competence. The present study investigated whether competence feedback leads to an improvement of therapist competence and patient outcome. Method: Sixty-seven master-level clinical trainees were randomly assigned to either a competence feedback group (CFG) or a control group (CG). Patients with a diagnosis of major depression (N = 114) were randomly assigned to CFG or CG. Treatment included 20 individual sessions of cognitive behavioral therapy (CBT). In CFG, therapists received, parallel to the treatment, five competence feedbacks, based on videotaped therapy sessions. Independent raters assessed therapist competence with the Cognitive Therapy Scale (CTS) and provided the competence feedback. Patient outcome was evaluated with the Beck Depression Inventory-II (BDI-II) and therapeutic alliance (Helping Alliance Questionnaire [HAQ]) from both therapist's (HAQ-T) and patient's (HAQ-P) perspective were evaluated after each of the 20 sessions. Results: (a) Therapist competence (CTS) increased significantly more for CFG than CG. (b) Depression (BDI-II) decreased significantly across sessions for both groups, but without evidence for a group-differential benefit for the CFG. (c) Therapeutic alliance (HAQ-T/P) increased significantly across sessions for both groups from both perspectives, but without group differences. (d) There is a positive effect of BDI-II on CTS at the beginning and a negative effect of CTS on BDI-II at the end of therapy. Conclusion: Competence feedback improves therapists' independently rated competence, but there is no evidence that competence feedback in CBT leads to better outcome. What is the public health significance of this article? This study suggests the substantial value of systematic competence feedback for improving therapist competence in the psychotherapy of depression. No significant effect of competence feedback on the reduction of reported depressive symptoms was found.},
  language  = {en}
}
@article{vonderMalsburgKlieglVasishth2015,
  author    = {von der Malsburg, Titus Raban and Kliegl, Reinhold and Vasishth, Shravan},
  title     = {Determinants of Scanpath Regularity in Reading},
  series = {Cognitive science : a multidisciplinary journal of anthropology, artificial intelligence, education, linguistics, neuroscience, philosophy, psychology ; journal of the Cognitive Science Society},
  volume    = {39},
  journal   = {Cognitive science : a multidisciplinary journal of anthropology, artificial intelligence, education, linguistics, neuroscience, philosophy, psychology ; journal of the Cognitive Science Society},
  number    = {7},
  publisher = {Wiley-Blackwell},
  address   = {Hoboken},
  issn      = {0364-0213},
  doi       = {10.1111/cogs.12208},
  pages     = {1675 -- 1703},
  year      = {2015},
  abstract  = {Scanpaths have played an important role in classic research on reading behavior. Nevertheless, they have largely been neglected in later research perhaps due to a lack of suitable analytical tools. Recently, von der Malsburg and Vasishth (2011) proposed a new measure for quantifying differences between scanpaths and demonstrated that this measure can recover effects that were missed with the traditional eyetracking measures. However, the sentences used in that study were difficult to process and scanpath effects accordingly strong. The purpose of the present study was to test the validity, sensitivity, and scope of applicability of the scanpath measure, using simple sentences that are typically read from left to right. We derived predictions for the regularity of scanpaths from the literature on oculomotor control, sentence processing, and cognitive aging and tested these predictions using the scanpath measure and a large database of eye movements. All predictions were confirmed: Sentences with short words and syntactically more difficult sentences elicited more irregular scanpaths. Also, older readers produced more irregular scanpaths than younger readers. In addition, we found an effect that was not reported earlier: Syntax had a smaller influence on the eye movements of older readers than on those of young readers. We discuss this interaction of syntactic parsing cost with age in terms of shifts in processing strategies and a decline of executive control as readers age. Overall, our results demonstrate the validity and sensitivity of the scanpath measure and thus establish it as a productive and versatile tool for reading research.},
  language  = {en}
}
@article{VolbrechtKliegl1998,
  author    = {Volbrecht, V. and Kliegl, Reinhold},
  title     = {The perception of blackness : an historical and contemporary review},
  isbn      = {3-11-015431-5},
  year      = {1998},
  language  = {en}
}
@article{VerhaeghenKlieglMayr1997,
  author    = {Verhaeghen, Paul and Kliegl, Reinhold and Mayr, Ulrich},
  title     = {Sequential and coordinative complexity in time-accurary functions for mental arithmetic},
  year      = {1997},
  language  = {en}
}
@article{VerhaeghenKliegl2000,
  author    = {Verhaeghen, Paul and Kliegl, Reinhold},
  title     = {The effects of learning a new algorithm on asymptotic accuracy and execution speed in old age : a reanalysis},
  year      = {2000},
  language  = {en}
}
@article{ValsecchiDimigenKliegletal.2009,
  author    = {Valsecchi, Matteo and Dimigen, Olaf and Kliegl, Reinhold and Sommer, Werner and Turatto, Massimo},
  title     = {Microsaccadic inhibition and P300 enhancement in a visual oddball task},
  issn      = {0048-5772},
  doi       = {10.1111/j.1469-8986.2009.00791.x},
  year      = {2009},
  abstract  = {It has recently been demonstrated that the presentation of visual oddballs induces a prolonged inhibition of microsaccades. The amplitude of the P300 component in event-related potentials (ERPs) has been shown to be sensitive to the category (target vs. nontarget) of the eliciting stimulus, its overall probability, and the preceding stimulus sequence. In the present study we further specify the functional underpinnings of the prolonged microsaccadic inhibition in the visual oddball task, showing that the stimulus category, the frequency of a stimulus, and the preceding stimulus sequence influence microsaccade rate. Furthermore, by co-recording ERPs and eye movements, we were able to demonstrate that, despite being largely sensitive to the same experimental manipulation, the amplitude of P300 and the microsaccadic inhibition predict each other only weakly.},
  language  = {en}
}
@misc{ValsecchiDimigenKliegletal.2009,
  author    = {Valsecchi, Matteo and Dimigen, Olaf and Kliegl, Reinhold and Sommer, Werner and Turatto, Massimo},
  title     = {Microsaccadic Inhibition and P300 Enhancement in a Visual Oddball Task},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-57170},
  year      = {2009},
  abstract  = {It has recently been demonstrated that the presentation of a rare target in a visual oddball paradigm induces a prolonged inhibition of microsaccades. In the field of electrophysiology, the amplitude of the P300 component in event-related potentials (ERP) has been shown to be sensitive to the stimulus category (target vs. non target) of the eliciting stimulus, its overall probability, and the preceding stimulus sequence. In the present study we further specify the functional underpinnings of the prolonged microsaccadic inhibition in the visual oddball task, showing that the stimulus category, the frequency of a stimulus and the preceding stimulus sequence influence microsaccade rate. Furthermore, by co-recording ERPs and eye-movements, we were able to demonstrate that, despite being largely sensitive to the same experimental manipulation, the amplitude of P300 and the microsaccadic inhibition predict each other very weakly, and thus constitute two independent measures of the brain's response to rare targets in the visual oddball paradigm.},
  language  = {en}
}
@article{TsaiKlieglYan2012,
  author    = {Tsai, Jie-Li and Kliegl, Reinhold and Yan, Ming},
  title     = {Parafoveal semantic information extraction in traditional Chinese reading},
  series = {Acta psychologica : international journal of psychonomics},
  volume    = {141},
  journal   = {Acta psychologica : international journal of psychonomics},
  number    = {1},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0001-6918},
  doi       = {10.1016/j.actpsy.2012.06.004},
  pages     = {17 -- 23},
  year      = {2012},
  abstract  = {Semantic information extraction from the parafovea has been reported only in simplified Chinese for a special subset of characters and its generalizability has been questioned. This study uses traditional Chinese, which differs from simplified Chinese in visual complexity and in mapping semantic forms, to demonstrate access to parafoveal semantic information during reading of this script. Preview duration modulates various types (identical, phonological, and unrelated) of parafoveal information extraction. Parafoveal semantic extraction is more elusive in English; therefore, we conclude that such effects in Chinese are presumably caused by substantial cross-language differences from alphabetic scripts. The property of Chinese characters carrying rich lexical information in a small region provides the possibility of semantic extraction in the parafovea.},
  language  = {en}
}
@article{ThompsonKliegl1991,
  author    = {Thompson, Laura A. and Kliegl, Reinhold},
  title     = {Adult age effects of plausibility on memory : the role of time constraints during encoding},
  year      = {1991},
  language  = {en}
}
@misc{ThompsonKliegl1991,
  author    = {Thompson, Laura A. and Kliegl, Reinhold},
  title     = {Adult age effects of plausibility on memory : the role of time constraints during encoding},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-40347},
  year      = {1991},
  abstract  = {We investigated the role of training-induced knowledge Schemas and encoding time on adult age differences in recall. High-plausible (schema coherent) words were recalled better than lowplausible (schema discrepant) words in both age groups. This difference was larger for old-adults than for young adults for presentation times ranging from 3 s to 11 s per word. After equating participants in overall recall (i.e., at 50\% correct) by dynamic adjustment of presentation time, old adults again showed a stronger plausibility effect than young adults when recall was above criterion. In a second experiment with self-paced encoding, old adults used more time than young adults only for low-plausible pairs, yet they still remembered fewer of them. In a third experiment, both age groups preferred to imagine high- rather than low-plausible words, but this effect was more pronounced in old adults. The results indicate that, compared with young adults, old adults find it particularly difficult to form elaborative mental images of schema-discrepant information under a wide variety of time constraints during encoding. Results are discussed in relation to explanations based on age-related mental slowing.},
  language  = {en}
}
@article{ThielRomanoKurthsetal.2008,
  author    = {Thiel, Marco and Romano, Maria Carmen and Kurths, J{\"u}rgen and Rolfs, Martin and Kliegl, Reinhold},
  title     = {Generating surrogates from recurrences},
  issn      = {1364-503X},
  year      = {2008},
  abstract  = {In this paper, we present an approach to recover the dynamics from recurrences of a system and then generate (multivariate) twin surrogate (TS) trajectories. In contrast to other approaches, such as the linear-like surrogates, this technique produces surrogates which correspond to an independent copy of the underlying system, i.e. they induce a trajectory of the underlying system visiting the attractor in a different way. We show that these surrogates are well suited to test for complex synchronization, which makes it possible to systematically assess the reliability of synchronization analyses. We then apply the TS to study binocular fixational movements and find strong indications that the fixational movements of the left and right eye are phase synchronized. This result indicates that there might be only one centre in the brain that produces the fixational movements in both eyes or a close link between the two centres.},
  language  = {en}
}
@article{ThielRomanoKurthsetal.2006,
  author    = {Thiel, Marco and Romano, Maria Carmen and Kurths, J{\"u}rgen and Rolfs, Martin and Kliegl, Reinhold},
  title     = {Twin surrogates to test for complex synchronisation},
  doi       = {10.1209/epl/i2006-10147-0},
  year      = {2006},
  abstract  = {We present an approach to generate (multivariate) twin surrogates (TS) based on recurrence properties. This technique generates surrogates which correspond to an independent copy of the underlying system, i.e. they induce a trajectory of the underlying system starting at different initial conditions. We show that these surrogates are well suited to test for complex synchronisation and exemplify this for the paradigmatic system of Rossler oscillators. The proposed test enables to assess the statistical relevance of a synchronisation analysis from passive experiments which are typical in natural systems},
  language  = {en}
}
@misc{ThielRomanoKurthsetal.2006,
  author    = {Thiel, Marco and Romano, Maria Carmen and Kurths, J{\"u}rgen and Rolfs, Martin and Kliegl, Reinhold},
  title     = {Generating Surrogates from Recurrences},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-56906},
  year      = {2006},
  abstract  = {In this paper we present an approach to recover the dynamics from recurrences of a system and then generate (multivariate) twin surrogate (TS) trajectories. In contrast to other approaches, such as the linear-like surrogates, this technique produces surrogates which correspond to an independent copy of the underlying system, i. e. they induce a trajectory of the underlying system visiting the attractor in a different way. We show that these surrogates are well suited to test for complex synchronization, which makes it possible to systematically assess the reliability of synchronization analyses. We then apply the TS to study binocular fixational movements and find strong indications that the fixational movements of the left and right eye are phase synchronized. This result indicates that there might be one centre only in the brain that produces the fixational movements in both eyes or a close link between two centres.},
  language  = {en}
}
@article{TetznerKlieglKraheetal.2017,
  author    = {Tetzner, Julia and Kliegl, Reinhold and Krah{\´e}, Barbara and Busching, Robert and Esser, G{\"u}nter},
  title     = {Developmental problems in adolescence},
  series = {Journal of Applied Developmental Psychology},
  volume    = {53},
  journal   = {Journal of Applied Developmental Psychology},
  publisher = {Elsevier},
  address   = {New York},
  issn      = {0193-3973},
  doi       = {10.1016/j.appdev.2017.08.003},
  pages     = {40 -- 53},
  year      = {2017},
  abstract  = {This longitudinal study investigated patterns of developmental problems across depression, aggression, and academic achievement during adolescence, using two measurement points two years apart (N = 1665; age T1: M = 13.14; female = 49.6\%). Latent Profile Analyses and Latent Transition Analyses yielded four main findings: A three-type solution provided the best fit to the data: an asymptomatic type (i.e., low problem scores in all three domains), a depressed type (i.e., high scores in depression), an aggressive type (i.e., high scores in aggression). Profile types were invariant over the two data waves but differed between girls and boys, revealing gender specific patterns of comorbidity. Stabilities over time were high for the asymptomatic type and for types that represented problems in one domain, but moderate for comorbid types. Differences in demographic variables (i.e., age, socio-economic status) and individual characteristics (i.e., self-esteem, dysfunctional cognitions, cognitive capabilities) predicted profile type memberships and longitudinal transitions between types.},
  language  = {en}
}
@inproceedings{TeichFuehnerGolleetal.2022,
  author    = {Teich, Paula and F{\"u}hner, Thea and Golle, Kathleen and Kliegl, Reinhold},
  title     = {How did the Sars-CoV-2 Pandemic affect the Physical Fitness of Primary School Children?},
  doi       = {10.25932/publishup-56085},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-560855},
  pages     = {20},
  year      = {2022},
  abstract  = {Throughout the years 2020 and 2021, schools were temporarily closed to slow the spread of SarsCoV-2. For some periods, children were locked out of sports in schools (physical education lessons, school sports working groups) and organized sports in sports clubs which often resulted in physical inactivity. Did these restrictions affect children's physical fitness? The EMOTIKON project (www.uni-potsdam.de/emotikon) annually assesses the physical fitness (cardiorespiratory endurance [6-minute-run test], coordination [star-run test], speed [20-m sprint test], lower [standing long jump test] and upper [ball push test] limbs muscle power, and balance [one-legged stance test]) of all third graders in the Federal State of Brandenburg, Germany. Participation is mandatory for all public primary schools. In the falls from 2016 to 2021, 83,476 keyage children (i.e., school enrollment according to the legal key date, between eight and nine years in third grade) from 512 schools were assessed with the EMOTIKON test battery. We tested the Covid pandemic effect on a composite score of the four highly correlated physical fitness tests assessing cardiorespiratory endurance, coordination, speed and powerLOW and on another composite score of the three running tests (cardiorespiratory endurance, coordination, speed), as well as separately on all six physical fitness components. Secular trends for each of the physical fitness components and differences between schools and children were taken into account in linear mixed models. We found a negative Covid pandemic effect on the two composite physical fitness scores, as well as on cardiorespiratory endurance, coordination, and speed. We found a positive Covid pandemic effect on powerLOW. Coordination was associated with the largest negative Covid pandemic effect, also passing the threshold of smallest meaningful change (SMC, i.e., 0.2 Cohen's d) when accumulated across two years. Given the educational context, Covid pandemic effects were also compared relative to the expected age-related development of the physical fitness components between eight and nine years. The Covid pandemic-related developmental costs/gains ranged from three to seven months relative to a longitudinal age effect, and from five to 17 months relative to a cross-sectional age effect. We propose that a longitudinal assessment yields a more reliable estimate of the developmental (age-related) gain than a cross-sectional one. Therefore, we consider the smaller Covid pandemic-related developmental costs/gains to be more credible. Interestingly, on the school level, „fitter" schools (relatively higher Grand Mean) exhibited larger negative Covid pandemic effects than schools with a lower physical fitness score. Negative Covid pandemic effects for the three run tasks were also found by B{\"a}hr et al. (2022), who tested the physical fitness of 16,496 Thuringian third-graders from 292 schools with the same six physical fitness tests used in EMOTIKON. Our results may be used to prioritize health-related interventions.},
  language  = {en}
}
@article{SimonCarbreraKliegl1993,
  author    = {Simon, Tony and Carbrera, Angel and Kliegl, Reinhold},
  title     = {A new approach to the study of subitizing as distinct enumeration processing},
  isbn      = {0-8058- 1487-6},
  year      = {1993},
  language  = {en}
}
@misc{SimonCabreraKliegl1993,
  author    = {Simon, Tony and Cabrera, Angel and Kliegl, Reinhold},
  title     = {A new approach to the study of subitizing as distinct enumeration processing},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-41083},
  year      = {1993},
  abstract  = {This paper presents a new methodology for examining the phenomenon of subitizing. Subjects were presented with a standard numerosity-detection task but for a range of presentation times to allow Task-Accuracy Functions to be computed for individual subjects. The data appear to show a continuous change in processing for numerosities from 2 to 5 when the data are aggregated across subjects. At the level of individual subjects, there appear to be qualitative shifts in enumeration processing after 3 or 4 objects. The approach used in this experiment may be used to test the claim that subitizing is a distinct enumeration process that can be used for small numbers of objects.},
  language  = {en}
}
@article{ShuZhouYanetal.2011,
  author    = {Shu, Hua and Zhou, Wei and Yan, Ming and Kliegl, Reinhold},
  title     = {Font size modulates saccade-target selection in Chinese reading},
  series = {Attention, perception, \& psychophysics : AP\&P ; a journal of the Psychonomic Society, Inc.},
  volume    = {73},
  journal   = {Attention, perception, \& psychophysics : AP\&P ; a journal of the Psychonomic Society, Inc.},
  number    = {2},
  publisher = {Springer},
  address   = {New York},
  issn      = {1943-3921},
  doi       = {10.3758/s13414-010-0029-y},
  pages     = {482 -- 490},
  year      = {2011},
  abstract  = {In alphabetic writing systems, saccade amplitude (a close correlate of reading speed) is independent of font size, presumably because an increase in the angular size of letters is compensated for by a decrease of visual acuity with eccentricity. We propose that this invariance may (also) be due to the presence of spaces between words, guiding the eyes across a large range of font sizes. Here, we test whether saccade amplitude is also invariant against manipulations of font size during reading Chinese, a character-based writing system without spaces as explicit word boundaries for saccade-target selection. In contrast to word-spaced alphabetic writing systems, saccade amplitude decreased significantly with increased font size, leading to an increase in the number of fixations at the beginning of words and in the number of refixations. These results are consistent with a model which assumes that word beginning (rather than word center) is the default saccade target if the length of the parafoveal word is not available.},
  language  = {en}
}
@article{SchroederWuerznerHeisteretal.2015,
  author    = {Schroeder, Sascha and W{\"u}rzner, Kay-Michael and Heister, Julian and Geyken, Alexander and Kliegl, Reinhold},
  title     = {childLex: a lexical database of German read by children},
  series = {Behavior research methods : a journal of the Psychonomic Society},
  volume    = {47},
  journal   = {Behavior research methods : a journal of the Psychonomic Society},
  number    = {4},
  publisher = {Springer},
  address   = {New York},
  issn      = {1554-351X},
  doi       = {10.3758/s13428-014-0528-1},
  pages     = {1085 -- 1094},
  year      = {2015},
  abstract  = {This article introduces childLex, an online database of German read by children. childLex is based on a corpus of children's books and comprises 10 million words that were syntactically annotated and lemmatized. childLex reports linguistic norms for lexical, superlexical, and sublexical variables in three different age groups: 6-8 (grades 1-2), 9-10 (grades 3-4), and 11-12 years (grades 5-6). Here, we describe how childLex was collected and analyzed. In addition, we provide information about the distributions of word frequency, word length, and orthographic neighborhood size, as well as their intercorrelations. Finally, we explain how childLex can be accessed using a Web interface.},
  language  = {en}
}
@article{SchlesewskyFanselowKliegletal.2000,
  author    = {Schlesewsky, Matthias and Fanselow, Gisbert and Kliegl, Reinhold and Krems, J.},
  title     = {The subject preference in the processing of locally ambiguous Wh-questions in german},
  isbn      = {0-7923-6104- 0},
  year      = {2000},
  language  = {en}
}
@article{SchiekScheffczykEngbertetal.1997,
  author    = {Schiek, Michael and Scheffczyk, Christian and Engbert, Ralf and Kurths, J{\"u}rgen and Krampe, Ralf-Thomas and Kliegl, Reinhold and Drepper, Friedhelm R.},
  title     = {Symbolic dynamics of physiological synchronisation : examples from bimanual movements and cardiorespiratory interaction},
  year      = {1997},
  abstract  = {Key words: Nonlinear time series analysis, symbolic dynamics, phase transitions, physiological data, biological synchronization, production of polyrhythms, cardiorespiratory interaction, variation of control parameter},
  language  = {en}
}
@article{ScheffczykKrampeEngbertetal.1997,
  author    = {Scheffczyk, Christian and Krampe, Ralf-Thomas and Engbert, Ralf and Rosenblum, Michael and Kurths, J{\"u}rgen and Kliegl, Reinhold},
  title     = {Tempo-induced transitions in polyrhythmic hand movements},
  year      = {1997},
  abstract  = {We investigate the cognitive control in polyrhythmic hand movements as a model paradigm for bimanual coordination. Using a symbolic coding of the recorded time series, we demonstrate the existence of qualitative transitions induced by experimental manipulation of the tempo. A nonlinear model with delayed feedback control is proposed, which accounts for these dynamical transitions in terms of bifurcations resulting from variation of the external control parameter. Furthermore, it is shown that transitions can also be observed due to fluctuations in the timing control level. We conclude that the complexity of coordinated bimanual movements results from interactions between nonlinear control mechanisms with delayed feedback and stochastic timing components.},
  language  = {en}
}
@article{ScheffczykEngbertKurthsetal.1995,
  author    = {Scheffczyk, Christian and Engbert, Ralf and Kurths, J{\"u}rgen and Krampe, Ralf-Thomas and Kliegl, Reinhold},
  title     = {Nonlinear Phenomena in Polyrhythmic Hand Movements},
  isbn      = {981-02-2689-6},
  year      = {1995},
  abstract  = {In this paper we apply symbolic transformations as a visualisation technique for analysing rhythm production. It is shown that qualitative information can be extracted from the experimental data. This approach may provide new insights into the organisation of temporal order by the brain on different levels of description. A simple phenomenological model for the explanation of the observed phenomena is proposed.},
  language  = {en}
}
@article{SchadVasishthHohensteinetal.2020,
  author    = {Schad, Daniel and Vasishth, Shravan and Hohenstein, Sven and Kliegl, Reinhold},
  title     = {How to capitalize on a priori contrasts in linear (mixed) models},
  series = {Journal of memory and language},
  volume    = {110},
  journal   = {Journal of memory and language},
  publisher = {Elsevier},
  address   = {San Diego},
  issn      = {0749-596X},
  doi       = {10.1016/j.jml.2019.104038},
  pages     = {40},
  year      = {2020},
  abstract  = {Factorial experiments in research on memory, language, and in other areas are often analyzed using analysis of variance (ANOVA). However, for effects with more than one numerator degrees of freedom, e.g., for experimental factors with more than two levels, the ANOVA omnibus F-test is not informative about the source of a main effect or interaction. Because researchers typically have specific hypotheses about which condition means differ from each other, a priori contrasts (i.e., comparisons planned before the sample means are known) between specific conditions or combinations of conditions are the appropriate way to represent such hypotheses in the statistical model. Many researchers have pointed out that contrasts should be "tested instead of, rather than as a supplement to, the ordinary 'omnibus' F test" (Hays, 1973, p. 601). In this tutorial, we explain the mathematics underlying different kinds of contrasts (i.e., treatment, sum, repeated, polynomial, custom, nested, interaction contrasts), discuss their properties, and demonstrate how they are applied in the R System for Statistical Computing (R Core Team, 2018). In this context, we explain the generalized inverse which is needed to compute the coefficients for contrasts that test hypotheses that are not covered by the default set of contrasts. A detailed understanding of contrast coding is crucial for successful and correct specification in linear models (including linear mixed models). Contrasts defined a priori yield far more useful confirmatory tests of experimental hypotheses than standard omnibus F-tests. Reproducible code is available from https://osf.io/7ukf6/.},
  language  = {en}
}
@article{RomanoThielKurthsetal.2006,
  author    = {Romano, Maria Carmen and Thiel, Marco and Kurths, J{\"u}rgen and Rolfs, Martin and Engbert, Ralf and Kliegl, Reinhold},
  title     = {Synchronization Analysis and Recurrence in Complex Systems},
  isbn      = {978-3-527-40623-4},
  year      = {2006},
  language  = {en}
}
@article{RolfsLaubrockKliegl2006,
  author    = {Rolfs, Martin and Laubrock, Jochen and Kliegl, Reinhold},
  title     = {Shortening and prolongation of saccade latencies following microsaccades},
  doi       = {10.1007/s00221-005-0148-1},
  year      = {2006},
  abstract  = {When the eyes fixate at a point in a visual scene, small saccades rapidly shift the image on the retina. The effect of these microsaccades on the latency of subsequent large-scale saccades may be twofold. First, microsaccades are associated with an enhancement of visual perception. Their occurrence during saccade target perception could, thus, decrease saccade latencies. Second, microsaccades are likely to indicate activity in fixation-related oculomotor neurons. These represent competitors to saccade-related cells in the interplay of gaze holding and shifting. Consequently, an increase in saccade latencies would be expected after microsaccades. Here, we present evidence for both aspects of microsaccadic impact on saccade latency. In a delayed response task, participants made saccades to visible or memorized targets. First, microsaccade occurrence up to 50 ms before target disappearance correlated with 18 ms (or 8\%) faster saccades to memorized targets. Second, if microsaccades occurred shortly (i.e., < 150 ms) before a saccade was required, mean saccadic reaction time in visual and memory trials was increased by about 40 ms (or 16\%). Hence, microsaccades can have opposite consequences for saccade latencies, pointing at a differential role of these fixational eye movements in the preparation of saccade motor programs},
  language  = {en}
}
@article{RolfsLaubrockKliegl2008,
  author    = {Rolfs, Martin and Laubrock, Jochen and Kliegl, Reinhold},
  title     = {Microsaccade-induced prolongation of saccadic latencies depends on microsaccade amplitude},
  issn      = {1995-8692},
  year      = {2008},
  language  = {en}
}
@misc{RolfsLaubrockKliegl2006,
  author    = {Rolfs, Martin and Laubrock, Jochen and Kliegl, Reinhold},
  title     = {Shortening and Prolongation of Saccade Latencies Following Microsaccades},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-57012},
  year      = {2006},
  abstract  = {When the eyes fixate at a point in a visual scene, small saccades rapidly shift the image on the retina. The effect of these microsaccades on the latency of subsequent large-scale saccades may be twofold. First, microsaccades are associated with an enhancement of visual perception. Their occurrence during saccade target perception should, thus, decrease saccade latencies. On the other hand, microsaccades likely indicate activity in fixation-related oculomotor neurons. These represent competitors to saccade-related cells in the interplay of gaze holding and shifting. Consequently, an increase in saccade latencies after microsaccades would be expected. Here, we present evidence for both aspects of microsaccadic impact on saccade latency. In a delayed response task, participants made saccades to visible or memorized targets. First, microsaccade occurrence up to 50 ms before target disappearance correlated with 18 ms (or 8\%) faster saccades to memorized targets. Second, if microsaccades occurred shortly (i.e., < 150 ms) before a saccade was required, saccadic reaction times in visual and memory trials were increased by about 40 ms (or 16\%). Hence, microsaccades can have opposite consequences for saccade latencies, pointing at a differential role of these fixational eye movements in preparation of motor programs.},
  language  = {en}
}
@article{RolfsKlieglEngbert2008,
  author    = {Rolfs, Martin and Kliegl, Reinhold and Engbert, Ralf},
  title     = {Toward a model of microsaccade generation : the case of microsaccadic inhibition},
  issn      = {1534-7362},
  doi       = {10.1167/8.11.5},
  year      = {2008},
  language  = {en}
}
@misc{RolfsKlieglEngbert2004,
  author    = {Rolfs, Martin and Kliegl, Reinhold and Engbert, Ralf},
  title     = {Microsaccade orientation supports attentional enhancement opposite to a peripheral cue: Commentary on Tse, Sheinberg, and Logothetis},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-57081},
  year      = {2004},
  language  = {en}
}
@article{RolfsEngbertKliegl2005,
  author    = {Rolfs, Martin and Engbert, Ralf and Kliegl, Reinhold},
  title     = {Crossmodal coupling of oculomotor control and spatial attention in vision and audition},
  issn      = {0014-4819},
  year      = {2005},
  abstract  = {Fixational eye movements occur involuntarily during visual fixation of stationary scenes. The fastest components of these miniature eye movements are microsaccades, which can be observed about once per second. Recent studies demonstrated that microsaccades are linked to covert shifts of visual attention. Here, we generalized this finding in two ways. First, we used peripheral cues, rather than the centrally presented cues of earlier studies. Second, we spatially cued attention in vision and audition to visual and auditory targets. An analysis of microsaccade responses revealed an equivalent impact of visual and auditory cues on microsaccade-rate signature (i.e. an initial inhibition followed by an overshoot and a final return to the pre-cue baseline rate). With visual cues or visual targets, microsaccades were briefly aligned with cue direction and then opposite to cue direction during the overshoot epoch, probably as a result of an inhibition of an automatic saccade to the peripheral cue. With left auditory cues and auditory targets microsaccades oriented in cue direction. We argue that microsaccades can be used to study crossmodal integration of sensory information and to map the time course of saccade preparation during covert shifts of visual and auditory attention},
  language  = {en}
}
@misc{RolfsEngbertKliegl2005,
  author    = {Rolfs, Martin and Engbert, Ralf and Kliegl, Reinhold},
  title     = {Crossmodal coupling of oculomotor controland spatial attention in vision and audition},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-56804},
  year      = {2005},
  abstract  = {Fixational eye movements occur involuntarily during visual fixation of stationary scenes. The fastest components of these miniature eye movements are microsaccades, which can be observed about once per second. Recent studies demonstrated that microsaccades are linked to covert shifts of visual attention [e.g., Engbert \& Kliegl (2003), Vision Res 43:1035-1045]. Here,we generalized this finding in two ways. First, we used peripheral cues, rather than the centrally presented cues of earlier studies. Second, we spatially cued attention in vision and audition to visual and auditory targets. An analysis of microsaccade responses revealed an equivalent impact of visual and auditory cues on microsaccade-rate signature (i.e., an initial inhibition followed by an overshoot and a final return to the pre-cue baseline rate). With visual cues or visual targets,microsaccades were briefly aligned with cue direction and then opposite to cue direction during the overshoot epoch, probably as a result of an inhibition of an automatic saccade to the peripheral cue. With left auditory cues and auditory targets microsaccades oriented in cue direction. Thus, microsaccades can be used to study crossmodal integration of sensory information and to map the time course of saccade preparation during covert shifts of visual and auditory attention.},
  language  = {en}
}