A controlled randomized study will be carry out of CBT + SST intervention compared to a control intervention of the same duration, format and contact with a therapist. The sample will be 30 participants with a diagnosis of schizophrenia, Schizoaffective disorder or psychotic disorder not otherwise specified diagnosed between 9 and 18 years. Patiens have to be in the early phase of the disease (first 5 years after the onset) and in non-acute treatment. All participants will be evaluated before and after the intervention with clinical scales, neuropsychological battery and blood test(...). 20 healthy subjects paired by age, puberal stage and sex will be also recruited and evaluated only at baseline point. The evaluations will be carried out by blind evaluators. Intention-to-treat analysis will be carry out using the statistical package SPSS v 20.