Schizophrenic inability to judge facial emotion: a controlled study

Area of Science:

• Neuroscience
• Psychiatry
• Cognitive Psychology

Background:

• Previous research suggested specific deficits in facial emotion recognition among individuals with schizophrenia.
• Methodological limitations in prior studies may have confounded results regarding visual processing in schizophrenia.

Purpose of the Study:

• To investigate the facial emotion judgment abilities of individuals with schizophrenia using a newly developed, methodologically improved test.
• To compare the performance of acute schizophrenics, chronic schizophrenics, remitted schizophrenics, depressed patients, and normal controls on emotion and non-emotion visual tasks.

Main Methods:

• A novel test was developed to assess emotion and non-emotion judgments from facial photographs.
• Five groups (N=20 each): acute schizophrenics, chronic schizophrenics, remitted schizophrenics, depressed patients, and normal controls participated.
• Participants performed dichotomous emotion ('happy'/'sad') and non-emotion ('old'/'young') judgments on matched tasks.

Main Results:

• Contrary to predictions, acute schizophrenics were impaired on both emotion and non-emotion judgment tasks.
• Performance deficits in acute schizophrenics were significant compared to remitted schizophrenics and normal controls on both tasks.
• Acute schizophrenics also showed significantly worse performance than depressed subjects on the emotion judgment task.

Conclusions:

• The findings suggest a broader visual processing deficit in acute schizophrenia, not limited to facial emotion recognition.
• Current theories of visual processing and face processing in schizophrenia may need revision in light of these results.
• The study highlights the importance of methodologically sound assessments in understanding cognitive deficits in psychiatric populations.