The majority of patients with schizophrenia show impairments in
most cognitive domains (Palmer et al., 2009). These cognitive deficits
substantially contribute to a long-term functional disability. In the last decade,
treatments addressing cognitive impairment have been receiving
increasing attention.While pharmacological treatments have proven successful
in reducing the positive symptoms (Leucht et al., 2009), cognitive
improvements following antipsychotic treatment have been found to be
small (Keefe et al., 2007).