Standardization of GHQ-28 Inventory on the Students of Azerbaijan Province of Iran

The aim of this research was to investigate of the psychometric characteristics of GHQ-28 inventory in the base of classical model for use in the various situations. The subjects of this research were 773 students that selected by cluster random sampling from Azerbaijan universities of Iran. The results of this research indicated that GHQ-28's scales have high correlations with SCL- 90-R, and also total scores of GHQ-28 have a high correlation with GSI of SCL-90-R. The results suggest that GHQ-28 and four subscales of this inventory have a high reliability factor analysis indicated that this inventory, after omission of 14 items, was saturated with 4 factors. At least between the scores male and female students, with the exception of Somatization scale, in the other three scales significant differences were found. But with the use of 0-0-1-1 scoring method, only in the social dysfunction scale a significant difference was found.