title: Psychophysiology of the reaction time experiment: a factor analytic approach.
abstract: A principal component factor analysis with varimax rotation was applied to behavioral and physiological data from a group of 25 subjects comprising normals and depressives, in whom event-related slow brain potentials were recorded during performance of a fixed foreperiod, reaction time task. Five of the seven factors thus evinced were labelled 'activation', 'inhibition', 'resilience', 'depressivity-neuroticism' and 'extraversion', the remaining two factors being related to arousal in an unspecified manner. Although no clear-cut partitioning of variance into trait, state and task-related components was achieved, the contention is advanced that measurement of these factors and their patterning might contribute to psychophysiological diagnosis, provided they are substantiated by further research.
mesh_terms: D000328:Adult; D003866:Depressive Disorder / Q000523:psychology*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011930:Reaction Time / Q000502:physiology