Perception of facial and vocal affect by people with schizophrenia in early and late stages of illness

Abstract

BackgroundEmotion recognition impairments have been demonstrated in schizophrenia, but few studies have examined whether these reflect generalised or specific perceptual deficits or are associated with illness course.AimsTo examine the nature of emotion recognition abnormalities in patients with schizophrenia at different stages of illness.MethodWe examined the performance of 50 in-patients with early-stage schizophrenia, 50 with chronic schizophrenia and 50 healthy controls on the Benton Facial Recognition Test, Facial Emotion Recognition Test and Voice Emotion Recognition Test.ResultsPatients with chronic schizophrenia were significantly more impaired than other groups on the emotional tasks, even after controlling for impairments in non-emotional stimuli. Individual emotion recognition accuracy for the two sensory modalities was not significantly positively correlated for either group with schizophrenia.ConclusionsEmotion recognition deficits in schizophrenia are trait features of the disorder and increase with illness duration.