Patients with schizophrenia show a deficit in emotion recognition through facial expression. Familiarity means the implicit memory of past affective experiences and it involves fast cognitive processes and it is triggered by certain signals.

To assess the emotion recognition in familiar and unfamiliar faces in a sample of schizophrenic patients and healthy controls.

18 outpatients diagnosed with schizophrenia (DSM-IVTR) and 18 healthy volunteers were assessed with the Ekman Test of emotion recognition in unfamiliar faces. In addition each subject was accompanied by 4 familiar people (parents, siblings or friends), which was photographed by expressing the 6 Ekman’s basic emotions.

Schizophrenic patients recognize worse emotions in their relatives than in neutral faces, a greater extent than controls (Mann-Whitney U = 81, p = .01). The patient group showed a mean score on the Ekman test (neutral faces) lower than control group (16 (SD 2.38) versus 17.82 (2.13; U p = 0.03). Regarding familiar faces, the group patients showed a worse performance than the control group (13.22 (3.8) versus 17.18 (2.82); U p = 0.00). In both tests, the highest number of errors was with emotions of anger and fear. The patients group showed a lower level of familiarity and emotional valence to their families (U = 33, p < 0.01).

The sense of familiarity may be a factor involved in face emotion recognition and it may be disturbed in schizophrenia.