Components of emotional processing were examined in psychiatric and neurological populations: communication channel (face/voice), processing mode (expression/perception), and emotional valence (positive/negative). These were assessed with an experimental affect battery which was administered to schizophrenic, unipolar depressive, right-brain-damaged, Parkinson's disease, and normal control right-handed adults. For expression, subjects were taped while producing facial and vocal emotional expressions. Judges rated the expressions for accuracy and intensity. For perception, subjects were asked to identify and discriminate facial and vocal emotions. Using correlational techniques, relationships between facial and vocal channels and between expressive and perceptual modes were explored. The test battery has good psychometric properties and discriminates among diagnostic groups.