The present study wants to evaluate the efficacy of a short psychoeducational type group intervention and Cognitive behavioral therapy (CBT) 3rd wave on the severity of hallucinatory Acoustico-Verbal (HAV) symptomatology in patients with schizophrenia.

Inclusion Criteria:

• Schizophrenic disorders, schizo-affective disorders
• Suffering from persistent HAV
• No change in symptomatology for 3 months.
• No anticipated change in antipsychotic treatment (anti-hallucinatory): olanzapine, risperidone, amisulpride, quetiapine, aripiprazole, loxapine, haloperidol, clopixol, modecate, nozinan, cyamemazine, piportil, clozapine
• Major patient, or major incompetent.

Exclusion Criteria:

• Mental retardation
• Subject participating in another search including an exclusion period still in progress at pre-inclusion