Abstract: Objective To study the intelligence of criminals with no psychosis diagnosed with forensic psychiatry.Methods The intelligence test results in 88 criminal cases with no psychosis and in 89 criminal cases with schizophrenia were compared.Results There were no significant statistical differences between two groups with respect to their sex,age,education,occupation,marital status,and criminal type.The average intelligence quotient(IQ) of no psychosis group was significantly higher than that of the schizophrenic group,but was significantly lower than the normal.There was no significant statistical difference between the subgroups claiming as either suffering or denying psychosis.Conclusion There is a mild impairment in the intelligence in no psychosis group.

Key words: with no psychosis, intelligence, forensic psychiatry