Inclusion Criteria:  The patient or their close relative must have given their free and informed consent and signed the consent form The patient must be a member or beneficiary of a health insurance plan The patient is available for a 3-year follow-up.  Patient is managed in a psychiatric service (consultation or hospitalization) for a first episode psychosis defined by:  Presence of positive psychotic symptoms (delusion(s) and/or hallucination(s) and/or conceptual disorganization) evolving for at least one week, either daily or at least 3 times per week for at least one hour per occasion ; Never having taken a neuroleptic treatment with antipsychotic aim (except for an antipsychotic treatment started for the current episode for example by the general practitioner before being referred to psychiatry); A disorder meeting the DSM 5 criteria from the following list: delusional disorder, brief psychotic disorder greater than 7 days, schizophreniform disorder, schizophrenia, schizoaffective disorder, substance-induced psychotic disorder greater than 7 days, other specific or nonspecific schizophrenic spectrum disorder or other psychotic disorder, bipolar I or II disorder with congruent and non-mood congruent psychotic features, bipolar disorder with congruent and non-mood congruent psychotic features induced by a substance, major depressive disorder with congruent and non-mood congruent psychotic features. Inclusion should be within the first 3 months of care for first episode psychosis in the psychiatric service. At the time of inclusion, the psychotic symptomatology observed during the first episode psychosis may still be present or in remission.  Exclusion Criteria:  The subject is participating in another category I interventional study, or is in a period of exclusion determined by a previous study The subject, or one of the parents for minor patients, refuses to sign the consent It is impossible to give the subject informed information The patient is under safeguard of justice or state guardianship The patients has an IQ less than or equal to 55 The patient has a first psychotic episode linked to a psychotic problem triggered by a medication of other medical condition The patient is pregnant or breastfeeding