An error is thus recorded if the subject chooses the incorrect object two or more times consecutively before shifting his strategy. The row data obtained from the tests were transformed to normalize their distribution before statistical analysis. WST and WFT results were also square-root transformed. Three One-Way Analyses of Variance were performed with WST, WFT and OAT indices as the dependent variables and with diagnosis and sex the independent ones. Sheffe's procedure was performed in the post-hoc comparison between means.
Diagnosis significantly affects test performance.
The post-hoc comparison between means also revealed that schizophrenic patients showed significantly worse performance on the WFT compared to controls. Neither the effect of sex nor the interaction diagnosis by sex was found to be significant. Diagnosis shows a significant effect. Neither the effect of sex nor the interaction between diagnosis and sex was found to be significant. To the best of our knowledge, this is the first attempt to make a neuropsychological evaluation profile of frontal lobe functioning in both OCD and schizophrenic patients.