Cue based switching between color-naming and word-reading responses to Stroop stimuli: Symmetric interference and complete disappearance of the Stroop effect
The asymmetry of the interference effect in the Stroop phenomenon is well known; Color- naming of incongruent color-words is damaged by word-dimension to be read, while in contrast with it, word-reading of incongruent color-words is not damaged by color-dimension to be named. We carried out five experiments on switching tasks between color-naming and word-reading based on tone cues (Exp.1) and based on color-words primes (Exp.2 to 5) . The participants had to make responses through word-reading to Stroop stimuli when tone cues as prime stimuli were higher pitched, while through color-naming to them when tone cues were lower pitched (Exp.1). Consequently, we found the disappearance of the asymmetry of the incongruence effect. Experiments from Exp.2 to Exp.5 involved cues as color-words but not tone cues. We obtained the complicated findings; â€complete disappearance of the Stroop effectâ€ and â€symmetric interference effectâ€ in differnet conditions when primes as switching- cues did not include color-words of targets (Exp.2) in contrast to this finding of Exp.1. Thus we carried out furthermore three experiments (Exp.3 to Exp.5) in varied relationships between primes and targets. Even when primes as switching cues did not include color-words of targets, large memory sets of cues made â€complete disappearance of the Stroop effectâ€.