title: Do the same stimulus-response relations influence choice reactions initially and after practice?
abstract: A two-choice reaction task was used to evaluate changes in stimulus-response translation with practice. In Experiment 1, four groups of Ss practiced with either a direct or indirect mapping of left-right stimuli to left-right responses and either a crossed or uncrossed hand placement and transferred to one of the four Mapping x Placement conditions. Stimulus-response location and response location-effector relations affected performance initially and after practice. In Experiments 2 and 3, Ss switched every 42 trials between conditions for which only the stimulus location-effector (Experiment 2) or stimulus-response location relation (Experiment 3) remained constant. Switching produced interference in Experiment 2 but not in Experiment 3, corroborating the influence of the stimulus-response location relation on performance. Mediation based on spatial codes continues to be a factor in the performance of practiced Ss.
authors.affiliation: Department of Psychological Sciences, Purdue University, West Lafayette, Indiana 47907-1364.
authors.forename: R W
authors.initials: RW
authors.lastname: Proctor
authors.forename: A
authors.initials: A
authors.lastname: Dutta
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007858:Learning; D008297:Male; D010775:Photic Stimulation; D011930:Reaction Time; D013028:Space Perception; D013647:Task Performance and Analysis; D014796:Visual Perception