Background & Objectives: Clock drawing test is a neuropsychological test and has simple scoring and administration. It is a visual-spatial task and therefore can be useful for assessment of the right parietal lobe, constructional apraxia and executive function in schizophrenia.

Methods: this research was a descriptive-analytical study. The samples of this research were 80 inpatient male persons with schizophrenia in Razi Hospital of Tabriz in the fall of 2007. The sample size was 28 patients that were randomly selected. 28 normal persons that have been matched in age and educational level as comparison group were assessed with the test. The raw data were analyzed by independent t-test and the analyses were done by SPSS13.

Results: The results indicated that there is a significant difference in two groups on two phases of research (p=0.01). In particular, the error scores in group with schizophrenia on two phases were higher than normal group. Furthermore, error scores of group with schizophrenia did not show any difference in the second phase.

Conclusion: On the basis of the results it can be concluded that the clock drawing test can diagnose differentially between persons with schizophrenia and normal population. On the other hand most frequent errors on drawing the test in persons with schizophrenia was the place assignment of numbers in clock face. This failure is due to visual-spatial disorder. Visual-spatial ability is affected by the object centered system and the viewer centered system.      

Background & Objectives: Schizophrenia is a chronic disease with frequent periods of exacerbation & remission which influences all aspects of the patient's life, in a way that the patient never returns to his premorbid life. The goal of this survey is Study of main signs in Schizophrenia patients in Ardabil City.

Methods:�This study was a descriptive-analytic one which was done on all of the patients with schizophrenia admitted in Fatemi & Issar hospitals in 2006. A sample of 100 was selected. To study the main signs of schizophrenia in these patients, a questionnaire was used. To screen the patients with schizophrenia, MMPI test was used. The findings were analyzed by descriptive statistics & through the computer software SPSS. Also a PCA method of factor analysis was used for the hypotheses.

Results:�79 patients were male and the rest female.�The most frequent main sign in these patients was attention deficit, & social withdrawal was at the second place. Also, the most frequent type of schizophrenia was paranoid schizophrenia (44%=44 patients). The most widely used was clozapine.

Conclusion: The findings of this study have a concordance with the results of the last studies about the main signs of schizophrenia & also with DSM-IV & Bluerian & Kreaplian symptoms (except from the perception disorders).