Comparing sequential effects in interference tasks to sequential effects in other domains using cognitive modeling
Mon—HZ_10—Talks2—1303
Presented by: Anne Voormann
Sequential modulations are a very robust observation in cognitive tasks. A common finding are sequential effects described by performance gains, faster mean response times (RTs) and higher accuracy, in case of a repetition of two consecutive trials, compared to an alternation. Sequential effects occur, for example, in visual search, two-choice RT tasks, and task-switching. In conflict tasks, sequential modulations are often referred to as congruency sequence effects, describing smaller congruence effects (performance in incongruent trials - performance in congruent trials) after a previous incongruent trial compared to a previous congruent trial. Although congruency sequence effects clearly describe sequential modulations, it is questionable how they relate to sequential effects. To examine a possible relationship between sequential effects in the interference paradigm with sequential effects in the visual search, two-choice RT tasks, and task-switching, we conducted an experiment using methods designed to maximize the similarity of stimuli and responses across paradigms. To allow a thorough comparison of sequential effects across paradigms, we relied on both descriptive (e.g., ex-Gaussian) and process-oriented (e.g., diffusion model) analysis of response time distributions rather than focusing on mean RTs. This helps us to identify both empirical similarities and differences across paradigms.
Keywords: sequential effects, cognitive modelling