@article{WilhelmOberauer2006, author = {Wilhelm, Oliver and Oberauer, Klaus}, title = {Why are reasoning ability and working memory capacity related to mental speed? An investigation of stimulus- response compatibility in choice reaction time tasks}, doi = {10.1080/09541440500215921}, year = {2006}, abstract = {A study with 114 young adults investigated the correlations of intelligence factors and working-memory capacity with reaction time (RT) tasks. Within two sets of four-choice RT tasks, stimulus-response compatibility was varied over three levels: compatible, incompatible, and arbitrary mappings. Two satisfactory measurement models for the RTs could be established: A general factor model without constraints on the loadings and a nested model with two correlated factors, distinguishing compatible from arbitrary mappings, with constraints on the loadings. Structural models additionally including factors for working memory and intelligence showed that the nested model with correlated factors is superior in fit. Working-memory capacity and fluid intelligence were correlated strongly with the nested factor for the RT tasks with arbitrary mappings, and less with the general RT factor. The results support the hypothesis that working memory is needed to maintain arbitrary bindings between stimulus representations and response representations, and this could explain the correlation of working-memory capacity with speed in choice RT tasks}, language = {en} } @article{WeidenfeldOberauerHornig2005, author = {Weidenfeld, Andrea and Oberauer, Klaus and Hornig, R}, title = {Causal and noncausal conditionals : an integrated model of interpretation and reasoning}, year = {2005}, abstract = {We present an integrated model for the understanding of and the reasoning from conditional statements. Central assumptions from several approaches are integrated into a causal path model. According to the model, the cognitive availability of exceptions to a conditional reduces the subjective conditional probability of the consequent, given the antecedent. This conditional probability determines people's degree of belief in the conditional, which in turn affects their willingness to accept logically valid inferences. In addition to this indirect pathway, the model contains a direct pathway: Availability of exceptional situations directly reduces the endorsement of valid inferences. We tested the integrated model with three experiments using conditional statements embedded in pseudonaturalistic cover stories. An explicitly mentioned causal link between antecedent and consequent was either present (causal conditionals) or absent (arbitrary conditionals). The model was supported for the causal but not for the arbitrary conditional statements}, language = {en} } @article{RodriguezVillagraGoetheOberaueretal.2013, author = {Rodriguez-Villagra, Odir Antonio and G{\"o}the, Katrin and Oberauer, Klaus and Kliegl, Reinhold}, title = {Working memory capacity in a go/no-go task - age differences in interference, processing speed, and attentional control}, series = {Developmental psychology}, volume = {49}, journal = {Developmental psychology}, number = {9}, publisher = {American Psychological Association}, address = {Washington}, issn = {0012-1649}, doi = {10.1037/a0030883}, pages = {1683 -- 1696}, year = {2013}, abstract = {We tested the limits of working-memory capacity (WMC) of young adults, old adults, and children with a memory-updating task. The task consisted of mentally shifting spatial positions within a grid according to arrows, their color signaling either only go (control) or go/no-go conditions. The interference model (IM) of Oberauer and Kliegl (2006) was simultaneously fitted to the data of all groups. In addition to the 3 main model parameters (feature overlap, noise, and processing rate), we estimated the time for switching between go and no-go steps as a new model parameter. In this study, we examined the IM parameters across the life span. The IM parameter estimates show that (a) conditions were not different in interference by feature overlap and interference by confusion; (b) switching costs time; (c) young adults and children were less susceptible than old adults to interference due to feature overlap; (d) noise was highest for children, followed by old and young adults; (e) old adults differed from children and young adults in lower processing rate; and (f) children and old adults had a larger switch cost between go steps and no-go steps. Thus, the results of this study indicated that across age, the IM parameters contribute distinctively for explaining the limits of WMC.}, language = {en} } @article{OberauerWilhelmRosas1999, author = {Oberauer, Klaus and Wilhelm, Oliver and Rosas, D. R.}, title = {Bayesian rationality for the selection task? : a test of optimal data selection theory}, year = {1999}, language = {en} } @article{OberauerWilhelm2000, author = {Oberauer, Klaus and Wilhelm, Oliver}, title = {Effects of directionality in deductive reasoning : I. The comprehension of single relational premises}, issn = {0278-7393}, year = {2000}, language = {en} } @article{OberauerWendlandKliegl2003, author = {Oberauer, Klaus and Wendland, Mirko and Kliegl, Reinhold}, title = {Age differences in working memory : the roles of storage and selective access}, year = {2003}, language = {en} } @article{OberauerWeidenfeldHoernig2006, author = {Oberauer, Klaus and Weidenfeld, Andrea and H{\"o}rnig, Robin}, title = {Working memory capacity and the construction of spatial mental models in comprehension and deductive reasoning}, doi = {10.1080/17470210500151717}, year = {2006}, abstract = {We asked 149 high-school students who were pretested for their working memory capacity (WMC) to read spatial descriptions relating to five objects and to evaluate conclusions asserting an unmentioned relationship between two of the objects. Unambiguous descriptions were compatible with a single spatial arrangement, whereas ambiguous descriptions permitted two arrangements; a subset of the ambiguous descriptions still determined the relation asserted in the conclusion, whereas another subset did not. Two groups of participants received different instructions: The deduction group should accept conclusions only if they followed with logical necessity from the description, whereas the comprehension group should accept a conclusion if it agreed with their representation of the arrangement. Self-paced reading times increased on sentences that introduced an ambiguity, replicating previous findings in deductive reasoning experiments. This effect was also found in the comprehension group, casting doubt on the interpretation that people consider multiple possible arrangements online. Responses to conclusions could be modelled by a multinomial processing model with four parameters: the probability of constructing a correct mental model, the probability of detecting an ambiguity, and two guessing parameters. Participants with high and with low WMC differed mainly in the probability of successfully constructing a mental model}, language = {en} } @article{OberauerWeidenfeldHornig2004, author = {Oberauer, Klaus and Weidenfeld, Andrea and Hornig, R.}, title = {Logical reasoning and probabilities: A comprehensive test of Oaksford and Chater (2001)}, issn = {1069-9384}, year = {2004}, abstract = {We report two experiments testing a central prediction of the probabilistic account of reasoning provided by Oaksford and Chater (2001): Acceptance of standard conditional inferences, card choices in the Wason selection task, and quantifiers chosen for conclusions from syllogisms should vary as a function of the frequency of the concepts involved. Frequency was manipulated by a probability-learning phase preceding the reasoning tasks to simulate natural sampling. The effects predicted by Oaksford and Chater (2001) were not obtained with any of the three paradigms}, language = {en} } @article{OberauerVockenberg2009, author = {Oberauer, Klaus and Vockenberg, Kerstin}, title = {Updating of working memory : lingering bindings}, issn = {1747-0218}, doi = {10.1080/17470210802372912}, year = {2009}, abstract = {Three experiments investigated proactive interference and proactive facilitation in a memory-updating paradigm. Participants remembered several letters or spatial patterns, distinguished by their spatial positions, and updated them by new stimuli up to 20 times per trial. Self-paced updating times were shorter when an item previously remembered and then replaced reappeared in the same location than when it reappeared in a different location. This effect demonstrates residual memory for no-longer-relevant bindings of items to locations. The effect increased with the number of items to be remembered. With one exception, updating times did not increase, and recall of final values did not decrease, over successive updating steps, thus providing little evidence for proactive interference building up cumulatively.}, language = {en} } @article{OberauerSuess2000, author = {Oberauer, Klaus and S{\"u}ß, Heinz-Martin}, title = {Working memory and interference : a comment on Jenkins, Myerson, Hale, and Fry (1999)}, year = {2000}, language = {en} } @article{OberauerSussWilhelmetal.2004, author = {Oberauer, Klaus and Suss, H. M. and Wilhelm, Oliver and Wittman, W. W.}, title = {The multiple faces of working memory : storage, processing, supervision, and coordination}, issn = {0160-2896}, year = {2004}, language = {en} } @article{OberauerSussWilhelmetal.2004, author = {Oberauer, Klaus and Suss, H. M. and Wilhelm, Oliver and Wittman, W. W.}, title = {The multiple faces of working memory : Storage, processing, supervision, and coordination}, issn = {0160-2896}, year = {2004}, language = {en} } @article{OberauerSuessSchulzeetal.2000, author = {Oberauer, Klaus and Suess, Heinz-Martin and Schulze, Ralf and Wilhelm, Otto and Wittmann, W. W.}, title = {Working memory capacity - facets of a cognitive ability construct}, year = {2000}, language = {en} } @article{OberauerSchulzeWilhelmetal.2005, author = {Oberauer, Klaus and Schulze, Ralf and Wilhelm, Oliver and S{\"u}ss, Heinz-Martin}, title = {Working memory and intelligence : their correlation and their relation ; Comment on Ackerman, Beier, and Boyle (2005)}, issn = {0033-2909}, year = {2005}, abstract = {On the basis of a mete-analysis of pairwise correlations between working memory tasks and cognitive ability measures, P. L. Ackerman. M. E. Beier, and M. O. Boyle (2005) claimed that working memory capacity (WMC) shares less than 25\% of its variance with general intelligence (,;) and with reasoning ability. In this comment, the authors argue that this is an underestimation because of several methodological shortcomings and biases. A reanalysis of the data reported in Ackerman et al. using the correct statistical procedures demonstrates that g and WMC are very highly correlated. On a conceptual level. the authors point out that WMC should be regarded as an explanatory construct for intellectual abilities. Theories of working memory do not claim that WMC is isomorphic with intelligence factors but that it is a very strong predictor of reasoning ability and also predicts general fluid intelligence and g.}, language = {en} } @article{OberauerMeyer2009, author = {Oberauer, Klaus and Meyer, Nadine}, title = {The contributions of encoding, retention, and recall to the Hebb effect}, issn = {0965-8211}, doi = {10.1080/09658210903107861}, year = {2009}, abstract = {The article reports an experiment testing whether the Hebb repetition effectthe gradual improvement of immediate serial recall when the same list is repeated several timesdepends on overt recall of the repeated lists. Previous reports which suggest that recall is critical confound the recall manipulation with retention interval. The present experiment orthogonally varies retention interval (0 or 9 s) and whether the list is to be recalled after the retention interval. Hebb repetition learning is assessed in a final test phase. A repetition effect was obtained in all four experimental conditions; it was larger for recalled than non-recalled lists, whereas retention interval had no effect. The results show that encoding is sufficient to generate cumulative long-term learning, which is strengthened by recall. Rehearsal, if it takes place in the retention interval at all, does not have the same effect on long-term learning as overt recall.}, language = {en} } @article{OberauerLange2009, author = {Oberauer, Klaus and Lange, Elke B.}, title = {Activation and binding in verbal working memory : a dual-process model for the recognition of nonwords}, issn = {0010-0285}, doi = {10.1016/j.cogpsych.2008.05.003}, year = {2009}, abstract = {The article presents a mathematical model of short-term recognition based on dual-process models and the three- component theory of working memory [Oberauer, K. (2002). Access to information in working memory: Exploring the focus of attention. Journal of Experimental Psychology: Learning, Memory, and Cognition, 28, 411-421]. Familiarity arises from activated representations in long-term memory, ignoring their relations; recollection retrieves bindings in the capacity- limited component of working memory. In three experiments participants encoded two short lists of nonwords for immediate recognition, one of which was then cued as irrelevant. Probes from the irrelevant list were rejected more slowly than new probes; this was also found with probes recombining letters of irrelevant nonwords, suggesting that familiarity arises from individual letters independent of their relations. When asked to accept probes whose letters were all in the relevant list, regardless of their conjunction, participants accepted probes preserving the original conjunctions faster than recombinations, showing that recollection accessed feature bindings automatically. The model fit the data best when familiarity depended only on matching letters, whereas recollection used binding information.}, language = {en} } @article{OberauerKliegl2004, author = {Oberauer, Klaus and Kliegl, Reinhold}, title = {Simultaneous cognitive operations in working memory after dual-task practice}, issn = {0096-1523}, year = {2004}, abstract = {The authors tested the hypothesis that with adequate practice, people can execute 2 cognitive operations in working memory simultaneously. In Experiment 1, 6 students practiced updating 2 items in working memory through 2 sequences of operations (1 numerical, 1 spatial). In different blocks, imperative stimuli for the 2 sequences of operations were presented either simultaneously or sequentially. Initially, most participants experienced substantial dual-task costs. After 24 sessions of practice, operation latencies for simultaneous presentation were equal to the maximum of times for the 2 operations in the sequential condition, suggesting perfect timesharing. Experiment 2 showed that a reduction of dual-task costs requires practice on the combination of the 2 updating tasks, not just practice on each individual task. Hence, the reduction of dual-task costs cannot be explained by shortening or automatization of individual operations}, language = {en} } @article{OberauerKliegl2010, author = {Oberauer, Klaus and Kliegl, Reinhold}, title = {Interferenz im Arbeitsged{\"a}chtnis : ein formales Modell}, issn = {0033-3042}, doi = {10.1026/0033-3042/a000008}, year = {2010}, language = {de} } @article{OberauerKliegl2006, author = {Oberauer, Klaus and Kliegl, Reinhold}, title = {A formal model of capacity limits in working memory}, series = {Journal of Memory and Language}, volume = {55}, journal = {Journal of Memory and Language}, number = {4}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0749-596X}, doi = {10.1016/j.jml.2006.08.009}, pages = {601 -- 626}, year = {2006}, abstract = {A mathematical model of working-memory capacity limits is proposed on the key assumption of mutual interference between items in working memory. Interference is assumed to arise from overwriting of features shared by these items. The model was fit to time-accuracy data of memory-updating tasks from four experiments using nonlinear mixed effect (NLME) models as a framework. The model gave a good account of the data from a numerical and a spatial task version. The performance pattern in a combination of numerical and spatial updating could be explained by variations in the interference parameter: assuming less feature overlap between contents from different domains than between contents from the same domain, the model can account for double dissociations of content domains in dual-task experiments. Experiment 3 extended this idea to similarity within the verbal domain. The decline of memory accuracy with increasing memory load was steeper with phonologically similar than with dissimilar material, although processing speed was faster for the similar material. The model captured the similarity effects with a higher estimated interference parameter for the similar than for the dissimilar condition. The results are difficult to explain with alternative models, in particular models incorporating time-based decay and models assuming limited resource pools.}, language = {en} } @article{OberauerKliegl2001, author = {Oberauer, Klaus and Kliegl, Reinhold}, title = {Beyond resources : formal models of complexity effects in age differences in working memory}, year = {2001}, language = {en} }