an a investigation of reliability of validity the child depression inventory in 13 to 15 year old adolescents

the aim of present research was to investigate psychometric properties (reliability ,validity and factor analysis) of children depression inventory (kovacs,1981) in boy and girl students of junior high schools in ahvaz. 399 boy and girl students were randomly selected by multi-stage sampling. the results of factor analysis extracted six factors. among those, the greatest proportion of variance accounted for the first factor. in addition, the test–retest reliability coefficient for total inventory were obtained 0.81, split-half of 0.84, and internal consistency of 0.87. also correlation coefficient between child depression inventory and short form children depression inventory for total sample were 0.36. for girls was 0.54, and for boys was 0.23. multivariate analysis of variance indicated that there aren’t significant differences between boys and girls, of arabic and persian language and course of study students in terms depression, but there is significant interaction between sex and course of study. keywords: children depression inventory; reliability; validity; depression; factor analysis