Data from two experiments investigating transfer of stimulus-response frequency on reaction time

This data collection contains the raw data sets from two experiments investigating the transfer of stimulus-response (S-R) frequency on reaction time (RT) in human participants. We have described the theoretical background, the methods, and the results of both expeiments in a manuscript entitled "Reaction times are shaped by global and local stimulus-response frequencies". This manuscript has been submitted for publication in October 2024, when we published these datasets. Here is the abstract of our manuscript: Responses to more frequent stimuli are faster and less error-prone than responses to less frequent stimuli. Here we show that responses to equally frequent stimulus colors, presented in left and right locations, exhibit an indirect relative-frequency effect when these stimulus colors are presented with different relative frequencies in upper and lower locations; the indirect relative-frequency effect is accompanied by modulated Simon effects and smaller than the direct effect. However, for the same stimulus locations the indirect effect disappears when the global relative frequencies of stimulus colors and thus responses are equated by presenting additional stimuli at the central location; under these conditions only a small direct effect remains for responses to stimulus colors in locations where they actually have different frequencies. Thus there is a strong global, location-independent effect of relative stimulus-response frequency, likely resulting from selective response preparation, and a weaker local, location-dependent effect, likely resulting from facilitated processing of the more frequent stimulus at a specific location. The findings imply that the effects of relative stimulus-response frequency are based on representations both of individual and integrated features of stimuli, responses, and context such as task-irrelevant stimulus locations. The design and analyis of Experiment 1 has been preregistered prior to conducting the research at https://osf.io/uk5n2. The design and analysis of Experiment 2 has been preregistered prior to conducting the research at https://osf.io/b3msh.