Early-onset schizophrenia (EOS) is associated with worse course and poor outcome than adulthood schizophrenia. Cognitive deficits are known to be a core feature in EOS, with large deficits on almost all cognitive domains. Importantly, cognitive deficits are known to be strong predictors of psychosocial and functional outcomes in schizophrenia and also in the early-onset form of the illness. Cognitive Remediation Therapy (CRT) is a behavioral training based intervention that aims to improve cognitive processes (attention, memory, executive function, social cognition or metacognition) with the goal of durability and generalization. It has been demonstrated that CRT improve cognitive deficits and functional outcome in adult patients but there are very few studies with adolescent samples.