“…Novel antipsychotic compounds (second-generation or 'atypical' antipsychotics) such as clozapine (Fitton and Heel, 1990), olanzapine (Fulton and Goa, 1997), and sertindole (Kane and Tamminga, 1997;Azorin et al, 2006) have some beneficial effect on negative symptoms and reduced potential to produce extrapyramidal side effects, but these agents have demonstrated inconsistent effects on cognitive function in patients with schizophrenia. Depending on the type of cognitive domain measured, second-generation antipsychotics have been reported to produce improvement (Mortimer 1997;Meltzer and McGurk, 1999;Keefe et al, 2007), no effect (Hoff et al, 1996;Meltzer and McGurk, 1999), and impairment (Goldberg et al, 1993).…”