Consistency of performance on eyedness tasks


Department of Psychology, Wichita State University, Wichita, KS 67260-0034, USA


Two forms of eye lateralization, called here dominance and preference, were investigated by giving participants multiple trials at each task dispersed over different days. Questionnaire data were also collected. It was found that: (1) a large percentage of persons cannot tell which eye they would use at eyedness tasks; (2) that over one-third of all participants give inconsistent results (some trials use right eye, other trials the left) on the dominance task and about one-sixth are inconsistent on the preference task; (3) that a typical inconsistency profile for dominance is unlike that for preference; and (4) that dominance seems to drive preference. The appropriateness of a binomial model for individual eyedness data and reasons for low correlations between tasks are also discussed.