The nine chapters in the text review the methods for studying the neurodevelopmental model (epidemiological, neurohistological, archival-observational, and through markers of abnormal neurodevelopment); the historical understanding of attentional dysfunction in schizophrenia and, later, of specific neuropsychological and experimental psychology models; and specific types of neucognitive deficits and attempts to integrate this information. Also covered are neurocognitive indicators of vulnerability to schizophrenia in patients and relatives; the relationship between neurocognition and symtomatology; the effects of antipsychotic and anticholinergic medication on neurocognition; neurocognition and structural and functional neuroimaging; the correlation of neurocognition and outcome; and interventions for neurocognitive deficits.