THE EFFECTS OF INCONGRUENT PROBABILITY AND STIMULUS-RESPONSE COMPATIBILITY ON SEQUENTIAL EFFECTS.
AbstractTheories of dimensional overlap, translation, and process dissociation were investigated incolor naming experiments. Twelve 30 participant groups identified the color of color-wordstimuli by touching either a word or a color patch. Incongruent probability varied betweengroups from 0.25 to 0.86 in six steps. There was significant incongruent inhibition in allconditions, supporting dimensional overlap and process dissociation. Inhibition decreasedlinearly with increasing incongruent probability, and there was greater inhibition with wordthan color responding, supporting all three theories. Color naming process remained stableas incongruent proportion increased, but word reading process was reduced, supportingprocess dissociation. Change in the relevant dimension from the previous trial caused slowercongruent RT; irrelevant change slowed incongruent RT. Negative priming had a greatereffect on incongruent than congruent RT. Results suggest dimensional overlap, color-colorword process dissociation, and priming are the important mechanisms for modeling colorcolorword responses.