Standardizing the Physical, Mood and Affective characteristics Inventory

The present study was aimed at standardizing the Physical, Mood and Affective characteristics Inventory in accordance with cultural attributes of Iranian society. The study was accomplished in two preliminary and final stages. In preliminary stage, an inventory consisting of 51 items was administered on 52 subjects with mental illness and 52 subjects who were mentally healthy. In final stage, the inventory was administered on a randomly selected sample, comprising 2335 subjects. In preliminary stage, the formal validity, criterion validity in relation to MMPI (short form) and differential validity were calculated. The results indicated that the inventory had desirable validity. In addition, the consistency coefficient of the inventory was obtained utilizing cronbach's a- method for both patient and non-patient groups (0.92 and 0.93, respectively). In final stage, the validity of inventory was calculated using factor analysis. The obtained value of Bartlett's test of sphericity was 0.63. 13 factors were derived based on scree test and with the preassumption of eigenvalue above (1). Omitting the extra factors, 6 out of 13 exploratory factors were left, as the main ones. The correlation Coefficient of each item score with the total score was calculated the index of internal consistency. The obtained coefficients were all significant (p<0/001). The criterion validity of the inventory, gained through concurrent administration with SCL-90 test on 320 subjects, was significant(p<0/001). Differential validity for the main sample (n=2335) was obtained by calculating the differences of mean scores for high school and college students, as well as boys and girls separately, on six factors. The reliability of the inventory was obtained utilizing, loop method. The value of total reliability coefficient, along with reliability coefficient, along with reliability coefficient in case of items omission, were a=0/9006 and a=0/9566 for the first and econd administrations respectively. The reliability of the inventory was also gained through test-retest method, with the correlation coefficient being signification at 0.99 level of confidence. Ultimately, the inventory norm, T and Z normal scores were obtained and normative hexagonal model was presented for sample groups separately.