ABSTRACT
We used factor analysis to examine relationships among tasks that have previously shown right hemispheric processing asymmetries. We were interested in whether processing emotion displayed by a face constitutes a distinct perceptual process from processing other facial characteristics. Interest in this topic arose after Boles [Citation1991. Factor analysis and the cerebral hemispheres: Pilot study and parietal functions. Neuropsychologia, Citation29(Citation1), Citation59–Citation91] found evidence of a common process underlying face processing and then Boles [Citation1992. Factor analysis and the cerebral hemispheres: Temporal, occipital and frontal functions. Neuropsychologia, Citation30(Citation11), Citation963–Citation988] found evidence of a distinct process for the processing of the facial emotion. We used seven tasks that measured both face and non-face perception. Analysis of the asymmetries revealed measures from the five face tasks resulted in a single factor, thus failing to support the hypothesis that emotional face perception would involve a separate process from non-emotional face perception. A second factor revealed a separate process underlying enumeration, and a third factor revealed yet another process underlying line bisection. The results indicate that perceiving facial emotion results in right hemisphere processing, and faces as a whole are responsible for such processing.
Disclosure statement
No potential conflict of interest was reported by the authors.