@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{ZuurLundbyeJensenLeukeletal.2010, author = {Zuur, Abraham T. and Lundbye-Jensen, Jesper and Leukel, Christan and Taube, Wolfgang and Grey, Michael J. and Gollhofer, Albert and Nielsen, Jens Bo and Gruber, Markus}, title = {Contribution of afferent feedback and descending drive to human hopping}, issn = {0022-3751}, doi = {10.1113/jphysiol.2009.182709}, year = {2010}, abstract = {During hopping an early burst can be observed in the EMG from the soleus muscle starting about 45 ms after touch-down. It may be speculated that this early EMG burst is a stretch reflex response superimposed on activity from a supra-spinal origin. We hypothesised that if a stretch reflex indeed contributes to the early EMG burst, then advancing or delaying the touch-down without the subject's knowledge should similarly advance or delay the burst. This was indeed the case when touch-down was advanced or delayed by shifting the height of a programmable platform up or down between two hops and this resulted in a correspondent shift of the early EMG burst. Our second hypothesis was that the motor cortex contributes to the first EMG burst during hopping. If so, inhibition of the motor cortex would reduce the magnitude of the burst. By applying a low-intensity magnetic stimulus it was possible to inhibit the motor cortex and this resulted in a suppression of the early EMG burst. These results suggest that sensory feedback and descending drive from the motor cortex are integrated to drive the motor neuron pool during the early EMG burst in hopping. Thus, simple reflexes work in concert with higher order structures to produce this repetitive movement.}, language = {en} } @phdthesis{Zopfi2018, author = {Zopfi, Stephan}, title = {Die t{\"a}gliche Bewegungs- und Sportstunde}, publisher = {Helyas}, address = {Berom{\"u}nster}, isbn = {978-3-9524944-1-7}, school = {Universit{\"a}t Potsdam}, pages = {185}, year = {2018}, abstract = {Die Gesundheit unserer Jugend ist seit je ein gesellschaftspolitisches Primat und verdient die gr{\"o}sstm{\"o}gliche Beachtung. Ein Teilbereich, n{\"a}mlich Bewegung und Sport, ist in der Schweiz auch aus diesem Grund verfassungsm{\"a}ssig geregelt. S{\"a}mtliche Volksschulen m{\"u}ssen bis ins neunte Schuljahr pro Woche drei Lektionen Bewegung und Sport anbieten.. Als einziges Schulfach geniesst Bewegung und Sport diesen bundesgesetzlichen Support im sonst streng f{\"o}deralistisch organisierten Bildungssystem der Schweiz. Trotz diesen drei verordneten Sportlektionen ist die physische Leistungsf{\"a}higkeit unserer Jugend einhergehend mit gesundheitlichen Parametern seit 1985 r{\"u}ckl{\"a}ufig und seit ein paar Jahren auf tiefem Niveau stagnierend. Zudem berichten Lehrpersonen {\"u}ber sinkende Konzentrationsf{\"a}higkeit in den letzten Jahren. Um eine fl{\"a}chendeckende Verbesserung der Situation zu bewirken, bietet sich die Schule als zentraler Ort der Einflussnahme an. Dies gilt im Besonderen f{\"u}r den Bereich Bewegung und Sport. Im Jahr 2005 wurde das Programm einer t{\"a}glichen Bewegungs- und Sportstunde an der Primarschule in Luzern/Schweiz gestartet. Nach einem kontinuierlichen Ausbau kamen ab 2011 etwas {\"u}ber 1300 Kinder von der ersten bis zur sechsten Klasse in den Genuss dieser t{\"a}glichen Bewegungslektion. Die wissenschaftlichen Untersuchungen in den drei gesellschaftlich hoch relevanten Bereichen der Konzentrationsf{\"a}higkeit, des {\"U}bergewichts und der Gleichgewichtsf{\"a}higkeit ergaben positive Resultate. So konnte die Konzentrationsf{\"a}higkeit - die Basis f{\"u}r erfolgreiches Lernen - signifikant gesteigert werden und teilweise signifikant war die Verbesserung des statischen Gleichgewichts. Ein positiver Trend zeigte sich auch bei der Senkung des Body-Mass-Indexes bei Knaben. Dies konnte bei den M{\"a}dchen nicht nachgewiesen werden. Auch wenn nicht alle Hypothesen vollumf{\"a}nglich best{\"a}tigt werden konnten, gilt es festzuhalten, dass das Projekt der t{\"a}glichen Sport- und Bewegungsstunde die Erwartungen in allen drei Messbereichen erf{\"u}llt hat und die Verbesserungen hinsichtlich der Konzentrationsf{\"a}higkeit, des {\"U}bergewichts und der Gleichgewichtsf{\"a}higkeit mehrheitlich ausgewiesen werden k{\"o}nnen. Es lohnt sich also, die t{\"a}gliche Sport- und Bewegungsstunde an der Primarschule einzuf{\"u}hren und den Pr{\"a}ventionsgedanken auch Taten folgen zu lassen.}, language = {de} } @article{ZinkeGebelGranacheretal.2019, author = {Zinke, Fridolin and Gebel, Arnd and Granacher, Urs and Prieske, Olaf}, title = {Acute Effects of Short-Term Local Tendon Vibration on Plantar Flexor Torque, Muscle Contractile Properties, Neuromuscular and Brain Activity in Young Athletes}, series = {Journal of sports science \& medicine}, volume = {18}, journal = {Journal of sports science \& medicine}, number = {2}, publisher = {Department of Sports Medicine, Medical Faculty of Uludag University}, address = {Bursa}, issn = {1303-2968}, pages = {327 -- 336}, year = {2019}, abstract = {The purpose of this study was to examine the acute effects of short-term Achilles tendon vibration on plantar flexor torque, twitch contractile properties as well as muscle and cortical activity in young athletes. Eleven female elite soccer players aged 15.6 +/- 0.5 years participated in this study. Three different conditions were applied in randomized order: Achilles tendon vibration (80 Hz) for 30 and 300 s, and a passive control condition (300 s). Tests at baseline and following conditions included the assessment of peak plantar flexor torque during maximum voluntary contraction, electrically evoked muscle twitches (e.g., potentiated twitch peak torque [PT]), and electromyographic (EMG) activity of the plantar flexors. Additionally, electroencephalographic (EEG) activity of the primary motor and somatosensory cortex were assessed during a submaximal dynamic concentric-eccentric plantar flexion exercise using an elastic rubber band. Large-sized main effects of condition were found for EEG absolute alpha-1 and beta-1 band power (p <= 0.011; 1.5 <= d <= 2.6). Post-hoc tests indicated that alpha-1 power was significantly lower at 30 and 300 s (p = 0.009; d = 0.8) and beta-1 power significantly lower at 300 s (p < 0.001; d = 0.2) compared to control condition. No significant effect of condition was found for peak plantar flexor torque, electrical evoked muscle twitches, and EMG activity. In conclusion, short-term local Achilles tendon vibration induced lower brain activity (i.e., alpha-1 and beta-1 band power) but did not affect lower limb peak torque, twitch contractile properties, and muscle activity. Lower brain activity following short-term local Achilles tendon vibration may indicate improved cortical function during a submaximal dynamic exercise in female young soccer players.}, language = {en} } @article{Ziezow1995, author = {Ziezow, Ralf}, title = {Psychodiagnostik bei der Talentesichtung im Kanurennsport}, year = {1995}, language = {de} } @article{ZieglerEhrlenspielBrand2009, author = {Ziegler, Matthias and Ehrlenspiel, Felix and Brand, Ralf}, title = {Latent state-trait theory : an application in sport psychology}, issn = {1469-0292}, doi = {10.1016/j.psychsport.2008.12.004}, year = {2009}, abstract = {Objective: Questionnaires are often applied in sports psychology to measure a person's trait or state. However, the extent to which the questionnaire captures differences because of trait or state influences is often unclear. The latent state-trait (LST) theory offers the opportunity to separate both variance sources. This separation allows estimating specific reliability coefficients. Design: The present paper gives a theoretical introduction to LST and its basic ideas. Using a real data set with N = 156 athletes we exemplify the steps necessary to derive the LST coefficients. All athletes filled out a comprehensive inventory assessing competitive anxiety on two occasions. Method: The data are analysed with structural equation models based on LST principles. Results: The results confirm the questionnaire's trait saturation. Conclusion: Finally, results are discussed in light of practical and theoretical implications.}, language = {en} } @article{ZhangSaidWischkeetal.2017, author = {Zhang, Nan and Said, Andre and Wischke, Christian and Kral, Vivian and Brodwolf, Robert and Volz, Pierre and Boreham, Alexander and Gerecke, Christian and Li, Wenzhong and Neffe, Axel T. and Kleuser, Burkhard and Alexiev, Ulrike and Lendlein, Andreas and Sch{\"a}fer-Korting, Monika}, title = {Poly[acrylonitrile-co-(N-vinyl pyrrolidone)] nanoparticles - Composition-dependent skin penetration enhancement of a dye probe and biocompatibility}, series = {European Journal of Pharmaceutics and Biopharmaceutics}, volume = {116}, journal = {European Journal of Pharmaceutics and Biopharmaceutics}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0939-6411}, doi = {10.1016/j.ejpb.2016.10.019}, pages = {66 -- 75}, year = {2017}, abstract = {Nanoparticles can improve topical drug delivery: size, surface properties and flexibility of polymer nanoparticles are defining its interaction with the skin. Only few studies have explored skin penetration for one series of structurally related polymer particles with systematic alteration of material composition. Here, a series of rigid poly[acrylonitrile-co-(N-vinyl pyrrolidone)] model nanoparticles stably loaded with Nile Red or Rhodamin B, respectively, was comprehensively studied for biocompatibility and functionality. Surface properties were altered by varying the molar content of hydrophilic NVP from 0 to 24.1\% and particle size ranged from 35 to 244 nm. Whereas irritancy and genotoxicity were not revealed, lipophilic and hydrophilic nanoparticles taken up by keratinocytes affected cell viability. Skin absorption of the particles into viable skin ex vivo was studied using Nile Red as fluorescent probe. Whilst an intact stratum corneum efficiently prevented penetration, almost complete removal of the horny layer allowed nanoparticles of smaller size and hydrophilic particles to penetrate into viable epidermis and dermis. Hence, systematic variations of nanoparticle properties allows gaining insights into critical criteria for biocompatibility and functionality of novel nanocarriers for topical drug delivery and risks associated with environmental exposure.}, language = {en} } @phdthesis{Zhang2003, author = {Zhang, Hui}, title = {Leistungsdiagnostik im Tischtennis : Analyse der realen und der mathematisch-simulativen Spielst{\"a}rken in der Herren-Weltklasse}, pages = {176 S.}, year = {2003}, language = {de} } @article{ZechSchuchPerezChaparroetal.2020, author = {Zech, Philipp and Schuch, Felipe and P{\´e}rez Chaparro, Camilo Germ{\´a}n Alberto and Kangas, Maria and Rapp, Michael Armin and Heissel, Andreas}, title = {Exercise, Comorbidities, and Health-Related Quality of Life in People Living with HIV}, series = {International Journal of Environmental Research and Public Health}, volume = {17}, journal = {International Journal of Environmental Research and Public Health}, number = {14}, publisher = {MDPI AG}, address = {Basel}, issn = {1660-4601}, doi = {10.3390/ijerph17145138}, pages = {15}, year = {2020}, abstract = {(1) Background: People with HIV (PWH) may perform more than one type of exercise cumulatively. The objective of this study is to investigate recreational exercise and its association with health-related quality of life (HRQOL) and comorbidities in relation to potential covariates. (2) Methods: The HIBES study (HIV-Begleiterkrankungen-Sport) is a cross-sectional study for people with HIV. The differences between non-exercisers versus exercisers (cumulated vs. single type of exercises) were investigated using regression models based on 454 participants. (3) Results: Exercisers showed a higher HRQOL score compared to non-exercisers (Wilcox r = 0.2 to 0.239). Psychological disorders were identified as the main covariate. Participants performing exercise cumulatively showed higher scores in duration, frequency, and intensity when compared to participants performing only one type of exercise. The mental health summary score was higher for the cumulated and single type of exercise if a psychological disorder existed. Duration and intensity were associated with an increase of HRQOL, whilst a stronger association between psychological disorders and exercise variables were evident. Exercise duration (minutes) showed a significant effect on QOL (standardized beta = 0.1) and for participants with psychological disorders (standardized beta = 0.3), respectively. (4) Conclusions: Psychological disorders and other covariates have a prominent effect on HRQOL and its association with exercise. For PWH with a psychological disorder, a stronger relationship between HRQOL with exercise duration and intensity emerged. However, differentiation of high-HRQOL individuals warrants further investigation by considering additional factors.}, language = {en} } @misc{ZechSchuchPerezChaparroetal.2020, author = {Zech, Philipp and Schuch, Felipe and P{\´e}rez Chaparro, Camilo Germ{\´a}n Alberto and Kangas, Maria and Rapp, Michael Armin and Heissel, Andreas}, title = {Exercise, Comorbidities, and Health-Related Quality of Life in People Living with HIV}, series = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, number = {661}, issn = {1866-8364}, doi = {10.25932/publishup-48028}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-480289}, pages = {15}, year = {2020}, abstract = {(1) Background: People with HIV (PWH) may perform more than one type of exercise cumulatively. The objective of this study is to investigate recreational exercise and its association with health-related quality of life (HRQOL) and comorbidities in relation to potential covariates. (2) Methods: The HIBES study (HIV-Begleiterkrankungen-Sport) is a cross-sectional study for people with HIV. The differences between non-exercisers versus exercisers (cumulated vs. single type of exercises) were investigated using regression models based on 454 participants. (3) Results: Exercisers showed a higher HRQOL score compared to non-exercisers (Wilcox r = 0.2 to 0.239). Psychological disorders were identified as the main covariate. Participants performing exercise cumulatively showed higher scores in duration, frequency, and intensity when compared to participants performing only one type of exercise. The mental health summary score was higher for the cumulated and single type of exercise if a psychological disorder existed. Duration and intensity were associated with an increase of HRQOL, whilst a stronger association between psychological disorders and exercise variables were evident. Exercise duration (minutes) showed a significant effect on QOL (standardized beta = 0.1) and for participants with psychological disorders (standardized beta = 0.3), respectively. (4) Conclusions: Psychological disorders and other covariates have a prominent effect on HRQOL and its association with exercise. For PWH with a psychological disorder, a stronger relationship between HRQOL with exercise duration and intensity emerged. However, differentiation of high-HRQOL individuals warrants further investigation by considering additional factors.}, language = {en} } @article{ZechPerezChaparroSchuchetal.2019, author = {Zech, Philipp and Perez Chaparro, Camilo Germ{\´a}n Alberto and Schuch, Felipe and Wolfarth, Bernd and Rapp, Michael Armin and Heissel, Andreas}, title = {Effects of Aerobic and Resistance Exercise on Cardiovascular Parameters for People Living With HIV}, series = {JANAC-Journal of the Association of Nurses in AIDS Care}, volume = {30}, journal = {JANAC-Journal of the Association of Nurses in AIDS Care}, number = {2}, publisher = {Lippincott Williams \& Wilkins}, address = {Philadelphia}, issn = {1055-3290}, doi = {10.1097/JNC.0000000000000006}, pages = {186 -- 205}, year = {2019}, abstract = {People living with HIV (PLWH) have limited exercise capacity because of anemia, neuromuscular disorders, and pulmonary limitations. We used a meta-analysis to examine the effect of aerobic and resistance exercise alone and in combination on cardiovascular parameters. Subgroup meta-analyses were conducted and long-term effects of exercise were investigated. A systematic literature search was conducted up to July/August 2017. The Physiotherapy Evidence Database-scale was used to rate quality and assess the risk of bias on the papers. Standardized mean differences (SMDs) were calculated to assess the effect of exercise. Posttreatment comparison between the exercise and control groups revealed moderate and large effect sizes in favor of the intervention group for VO2max (SMD50.66, p < .0001) and the 6-minute walk test (SMD = 1.11, p = .0001). Exercise had a positive effect on cardiovascular parameters in PLWH. Exercise can be a prevention factor for PLWH dealing with multiple comorbidities.}, language = {en} } @misc{ZechRappHeinzeletal.2017, author = {Zech, Philipp A. and Rapp, Michael Armin and Heinzel, Stephan and Wolfarth, Bernd and Lawrence, Jimmy B. and Heissel, Andreas}, title = {Does Exercise Help People Living with HIV Improve Their Quality of Life? A meta-analysis.}, series = {Medicine and science in sports and exercise : official journal of the American College of Sports Medicine}, volume = {49}, journal = {Medicine and science in sports and exercise : official journal of the American College of Sports Medicine}, publisher = {Lippincott Williams \& Wilkins}, address = {Philadelphia}, issn = {0195-9131}, doi = {10.1249/01.mss.0000518177.22369.2f}, pages = {470 -- 470}, year = {2017}, language = {en} } @article{ZaytsevaKorsakovaGurovichetal.2014, author = {Zaytseva, Yuliya and Korsakova, Natalya and Gurovich, Isaac Ya and Heinz, Andreas and Rapp, Michael Armin}, title = {Luria revisited: Complex motor phenomena in first episode schizophrenia and schizophrenia spectrum disorders}, series = {Psychiatry research : the official publication of the International Society for Neuroimaging in Psychiatry}, volume = {220}, journal = {Psychiatry research : the official publication of the International Society for Neuroimaging in Psychiatry}, number = {1-2}, publisher = {Elsevier}, address = {Clare}, issn = {0165-1781}, doi = {10.1016/j.psychres.2014.08.009}, pages = {145 -- 151}, year = {2014}, language = {en} } @article{WyckmansOttoSeboldetal.2019, author = {Wyckmans, Florent and Otto, A. Ross and Sebold, Miriam Hannah and Daw, Nathaniel and Bechara, Antoine and Saeremans, M{\´e}lanie and Kornreich, Charles and Chatard, Armand and Jaafari, Nemat and No{\"e}l, Xavier}, title = {Reduced model-based decision-making in gambling disorder}, series = {Scientific reports}, volume = {9}, journal = {Scientific reports}, publisher = {Nature Publ. Group}, address = {London}, issn = {2045-2322}, doi = {10.1038/s41598-019-56161-z}, pages = {10}, year = {2019}, abstract = {Compulsive behaviors (e.g., addiction) can be viewed as an aberrant decision process where inflexible reactions automatically evoked by stimuli (habit) take control over decision making to the detriment of a more flexible (goal-oriented) behavioral learning system. These behaviors are thought to arise from learning algorithms known as "model-based" and "model-free" reinforcement learning. Gambling disorder, a form of addiction without the confound of neurotoxic effects of drugs, showed impaired goal-directed control but the way in which problem gamblers (PG) orchestrate model-based and model-free strategies has not been evaluated. Forty-nine PG and 33 healthy participants (CP) completed a two-step sequential choice task for which model-based and model-free learning have distinct and identifiable trial-by-trial learning signatures. The influence of common psychopathological comorbidities on those two forms of learning were investigated. PG showed impaired model-based learning, particularly after unrewarded outcomes. In addition, PG exhibited faster reaction times than CP following unrewarded decisions. Troubled mood, higher impulsivity (i.e., positive and negative urgency) and current and chronic stress reported via questionnaires did not account for those results. These findings demonstrate specific reinforcement learning and decision-making deficits in behavioral addiction that advances our understanding and may be important dimensions for designing effective interventions.}, language = {en} } @article{WuertzKozakBleischNadietal.2018, author = {Wuertz-Kozak, Karin and Bleisch, Dominique and Nadi, Najia and Proemmel, Peter and Hitzl, Wolfgang and Kessler, Thomas M. M. and Gautschi, Oliver P. and Hausmann, Oliver N.}, title = {Sexual and urinary function following anterior lumbar surgery in females}, series = {Neurourology and urodynamics}, volume = {38}, journal = {Neurourology and urodynamics}, number = {2}, publisher = {Wiley}, address = {Hoboken}, issn = {0733-2467}, doi = {10.1002/nau.23874}, pages = {632 -- 636}, year = {2018}, abstract = {Aims Anterior lumbar interbody fusion procedures (ALIF) and total disc replacement (TDR) with anterior exposure of the lumbar spine entail a risk of a vascular injury and dysfunction of the sympathetic and parasympathetic nerves due to disturbance of the inferior and superior hypogastric plexus. While retrograde ejaculation is a known complication of the anterior spinal approach in males, post-operative sexual as well as urinary function in females has not yet been thoroughly investigated and was hence the aim of this study. Methods Fifteen female patients documented their sexual and urinary function preoperatively, 3 months and 6 months postoperatively, using the validated questionnaires FSFI (Female Sexual Function Index) and ICIQ (International Consultation of Incontinence Questionnaire). Randomization tests were used to statistically analyze expectation values over time (two-sided, P < 0.05). Results While no statistically significant change in the total FSFI score occurred over time, a significant increase in FSFI desire score was noted between preoperative (2.95 +/- 0.8) and 6 months follow-up (3.51 +/- 0.6, P = 0.02). Urinary continence remained unchanged over time. Conclusion In summary, ALIF and lumbar TDR do not seem to negatively influence sexual and urinary function in females. In contrast, increased sexual desire was noted, likely secondary to post-surgical pain relief.}, language = {en} } @phdthesis{Wortmann2023, author = {Wortmann, Hanna Rosalie}, title = {Food Neophilie}, doi = {10.25932/publishup-62857}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-628572}, school = {Universit{\"a}t Potsdam}, pages = {164}, year = {2023}, abstract = {Trotz der eindeutigen Vorteile einer ausgewogenen Ern{\"a}hrung halten sich viele Menschen weltweit nicht an entsprechende Ern{\"a}hrungsrichtlinien. Um angemessene Strategien zur Unterst{\"u}tzung einer gesundheitsf{\"o}rdernden Ern{\"a}hrung zu entwickeln, ist ein Verst{\"a}ndnis der zugrunde liegenden Faktoren unerl{\"a}sslich. Insbesondere die Gruppe der {\"a}lteren Erwachsenen stellt dabei eine wichtige Zielgruppe f{\"u}r ern{\"a}hrungsbezogene Pr{\"a}ventions- und Interventionsans{\"a}tze dar. Einer der vielen Faktoren, die als Determinanten einer gesundheitsf{\"o}rdernden Ern{\"a}hrung diskutiert werden, ist die Food Neophilie, also die Bereitschaft, neue und unbekannte Lebensmittel auszuprobieren. Aktuelle Forschungsergebnisse legen nahe, dass die Food Neophilie positiv mit einer gesundheitsf{\"o}rdernden Ern{\"a}hrung in Verbindung steht, allerdings ist die bisherige Forschung in diesem Bereich {\"a}ußerst begrenzt. Das Ziel der Dissertation war es, das Konstrukt der Food Neophilie sowie seine Beziehung zu gesundheitsf{\"o}rderndem Ern{\"a}hrungsverhalten im h{\"o}heren Erwachsenenalter grundlegend zu erforschen, um das Potenzial der Food Neophilie f{\"u}r die Gesundheitsf{\"o}rderung {\"a}lterer Erwachsener besser zu verstehen. Dabei wurde im Rahmen der ersten Publikation zun{\"a}chst untersucht, wie sich das Konstrukt der Food Neophilie reliabel und valide erfassen l{\"a}sst, um weiterf{\"u}hrende Untersuchungen der Food Neophilie zu erm{\"o}glichen. Die psychometrische Validierung der deutschen Version der Variety Seeking Tendency Scale (VARSEEK) basierte auf zwei unabh{\"a}ngigen Stichproben mit insgesamt N = 1000 Teilnehmenden und best{\"a}tigte, dass es sich bei der Skala um ein reliables und valides Messinstrument zur Erfassung der Food Neophilie handelt. Darauf aufbauend wurde im Rahmen der zweiten Publikation die Beziehung der Food Neophilie und der Ern{\"a}hrungsqualit{\"a}t {\"u}ber die Zeit hinweg analysiert. Die prospektive Untersuchung von N = 960 Teilnehmenden des h{\"o}heren Erwachsenenalters (M = 63.4 Jahre) anhand einer Cross-Lagged-Panel-Analyse ergab hohe zeitliche Stabilit{\"a}ten der Food Neophilie und der Ern{\"a}hrungsqualit{\"a}t {\"u}ber einen Zeitraum von drei Jahren. Es zeigte sich zudem ein positiver querschnittlicher Zusammenhang zwischen der Food Neophilie und der Ern{\"a}hrungsqualit{\"a}t, jedoch wurde die Food Neophilie nicht als signifikante Determinante der Ern{\"a}hrungsqualit{\"a}t {\"u}ber die Zeit hinweg identifiziert. In der dritten Publikation wurden schließlich nicht nur die individuellen Auswirkungen der Food Neophilie auf die Ern{\"a}hrungsqualit{\"a}t betrachtet, sondern auch potenzielle dynamische Wechselwirkungen innerhalb von Partnerschaften einbezogen. Hierzu erfolgte mittels eines Actor-Partner-Interdependence-Modells eine Differenzierung potenzieller intra- und interpersoneller Einfl{\"u}sse der Food Neophilie auf die Ern{\"a}hrungsqualit{\"a}t. Im Rahmen der dyadischen Analyse zeigte sich bei N = 390 heterosexuellen Paaren im h{\"o}heren Erwachsenenalter (M = 64.0 Jahre) ein Dominanzmuster: W{\"a}hrend die Food Neophilie der Frauen positiv mit ihrer eigenen Ern{\"a}hrungsqualit{\"a}t und der ihrer Partner zusammenhing, war die Food Neophilie der M{\"a}nner nicht mit der Ern{\"a}hrungsqualit{\"a}t des Paares assoziiert. Insgesamt leistet die vorliegende Dissertation einen wertvollen Beitrag zum umfassenden Verst{\"a}ndnis der Food Neophilie sowie ihrer Rolle im Kontext der Ern{\"a}hrungsgesundheit {\"a}lterer Erwachsener. Trotz fehlender Vorhersagekraft {\"u}ber die Zeit hinweg deutet der positive Zusammenhang zwischen Food Neophilie und Ern{\"a}hrungsqualit{\"a}t darauf hin, dass die Fokussierung auf eine positive und neugierige Einstellung gegen{\"u}ber Lebensmitteln eine innovative Perspektive f{\"u}r Pr{\"a}ventions- und Interventionsans{\"a}tze zur Unterst{\"u}tzung einer gesundheitsf{\"o}rdernden Ern{\"a}hrung {\"a}lterer Erwachsener bieten k{\"o}nnte.}, language = {de} } @misc{WolffSchindlerEnglertetal.2016, author = {Wolff, Wanja and Schindler, Sebastian and Englert, Christoph and Brand, Ralf and Kissler, Johanna}, title = {Uninstructed BIAT faking when ego depleted or in normal state}, series = {BMC neuroscience}, journal = {BMC neuroscience}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-407342}, pages = {12}, year = {2016}, abstract = {Background: Deception can distort psychological tests on socially sensitive topics. Understanding the cerebral processes that are involved in such faking can be useful in detection and prevention of deception. Previous research shows that faking a brief implicit association test (BIAT ) evokes a characteristic ERP response. It is not yet known whether temporarily available self-control resources moderate this response. We randomly assigned 22 participants (15 females, 24.23 ± 2.91 years old) to a counterbalanced repeated-measurements design. Participants first com- pleted a Brief-IAT (BIAT ) on doping attitudes as a baseline measure and were then instructed to fake a negative dop - ing attitude both when self-control resources were depleted and non-depleted. Cerebral activity during BIAT perfor - mance was assessed using high-density EEG. Results: Compared to the baseline BIAT, event-related potentials showed a first interaction at the parietal P1, while significant post hoc differences were found only at the later occurring late positive potential. Here, signifi- cantly decreased amplitudes were recorded for 'normal' faking, but not in the depletion condition. In source space, enhanced activity was found for 'normal' faking in the bilateral temporoparietal junction. Behaviorally, participants were successful in faking the BIAT successfully in both conditions. Conclusions: Results indicate that temporarily available self-control resources do not affect overt faking success on a BIAT. However, differences were found on an electrophysiological level. This indicates that while on a phenotypical level self-control resources play a negligible role in deliberate test faking the underlying cerebral processes are markedly different.}, language = {en} } @article{WolffSchindlerBrand2015, author = {Wolff, Wanja and Schindler, Sebastian and Brand, Ralf}, title = {The Effect of Implicitly Incentivized Faking on Explicit and Implicit Measures of Doping Attitude: When Athletes Want to Pretend an Even More Negative Attitude to Doping}, series = {PLoS one}, volume = {10}, journal = {PLoS one}, number = {4}, publisher = {PLoS}, address = {San Fransisco}, issn = {1932-6203}, doi = {10.1371/journal.pone.0118507}, pages = {10}, year = {2015}, abstract = {The Implicit Association Test (IAT) aims to measure participants' automatic evaluation of an attitude object and is useful especially for the measurement of attitudes related to socially sensitive subjects, e.g. doping in sports. Several studies indicate that IAT scores can be faked on instruction. But fully or semi-instructed research scenarios might not properly reflect what happens in more realistic situations, when participants secretly decide to try faking the test. The present study is the first to investigate IAT faking when there is only an implicit incentive to do so. Sixty-five athletes (22.83 years +/- 2.45; 25 women) were randomly assigned to an incentive-to-fake condition or a control condition. Participants in the incentive-to-fake condition were manipulated to believe that athletes with lenient doping attitudes would be referred to a tedious 45-minute anti-doping program. Attitudes were measured with the pictorial doping brief IAT (BIAT) and with the Performance Enhancement Attitude Scale (PEAS). A one-way MANOVA revealed significant differences between conditions after the manipulation in PEAS scores, but not in the doping BIAT. In the light of our hypothesis this suggests that participants successfully faked an exceedingly negative attitude to doping when completing the PEAS, but were unsuccessful in doing so on the reaction time-based test. This study assessed BIAT faking in a setting that aimed to resemble a situation in which participants want to hide their attempts to cheat. The two measures of attitude were differentially affected by the implicit incentive. Our findings provide evidence that the pictorial doping BIAT is relatively robust against spontaneous and naive faking attempts. (B) IATs might be less prone to faking than implied by previous studies.}, language = {en} } @misc{WolffBrandBaumgartenetal.2017, author = {Wolff, Wanja and Brand, Ralf and Baumgarten, Franz and L{\"o}sel, Johanna and Ziegler, Matthias}, title = {Modeling students' instrumental (mis-)use of substances to enhance cognitive performance}, issn = {1866-8364}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-401441}, pages = {11}, year = {2017}, abstract = {Background: Healthy university students have been shown to use psychoactive substances, expecting them to be functional means for enhancing their cognitive capacity, sometimes over and above an essentially proficient level. This behavior called Neuroenhancement (NE) has not yet been integrated into a behavioral theory that is able to predict performance. Job Demands Resources (JD-R) Theory for example assumes that strain (e.g. burnout) will occur and influence performance when job demands are high and job resources are limited at the same time. The aim of this study is to investigate whether or not university students' self-reported NE can be integrated into JD-R Theory's comprehensive approach to psychological health and performance. Methods: 1,007 students (23.56 ± 3.83 years old, 637 female) participated in an online survey. Lifestyle drug, prescription drug, and illicit substance NE together with the complete set of JD-R variables (demands, burnout, resources, motivation, and performance) were measured. Path models were used in order to test our data's fit to hypothesized main effects and interactions. Results: JD-R Theory could successfully be applied to describe the situation of university students. NE was mainly associated with the JD-R Theory's health impairment process: Lifestyle drug NE (p < .05) as well as prescription drug NE (p < .001) is associated with higher burnout scores, and lifestyle drug NE aggravates the study demands-burnout interaction. In addition, prescription drug NE mitigates the protective influence of resources on burnout and on motivation. Conclusion: According to our results, the uninformed trying of NE (i.e., without medical supervision) might result in strain. Increased strain is related to decreased performance. From a public health perspective, intervention strategies should address these costs of non-supervised NE. With regard to future research we propose to model NE as a means to reach an end (i.e. performance enhancement) rather than a target behavior itself. This is necessary to provide a deeper understanding of the behavioral roots and consequences of the phenomenon.}, language = {en} } @article{WolffBrand2013, author = {Wolff, Wanja and Brand, Ralf}, title = {Subjective stressors in school and their relation to neuroenhancement a behavioral perspective on students' everyday life "doping"}, series = {Substance abuse treatment, prevention, and policy}, volume = {8}, journal = {Substance abuse treatment, prevention, and policy}, publisher = {BioMed Central}, address = {London}, issn = {1747-597X}, doi = {10.1186/1747-597X-8-23}, pages = {6}, year = {2013}, abstract = {Background: The use of psychoactive substances to neuroenhance cognitive performance is prevalent. Neuroenhancement (NE) in everyday life and doping in sport might rest on similar attitudinal representations, and both behaviors can be theoretically modeled by comparable means-to-end relations (substance-performance). A behavioral (not substance-based) definition of NE is proposed, with assumed functionality as its core component. It is empirically tested whether different NE variants (lifestyle drug, prescription drug, and illicit substance) can be regressed to school stressors. Findings: Participants were 519 students (25.8 +/- 8.4 years old, 73.1\% female). Logistic regressions indicate that a modified doping attitude scale can predict all three NE variants. Multiple NE substance abuse was frequent. Overwhelming demands in school were associated with lifestyle and prescription drug NE. Conclusions: Researchers should be sensitive for probable structural similarities between enhancement in everyday life and sport and systematically explore where findings from one domain can be adapted for the other. Policy makers should be aware that students might misperceive NE as an acceptable means of coping with stress in school, and help to form societal sensitivity for the topic of NE among our younger ones in general.}, language = {en} }