Psychometric properties of developmental -Behavioral problems Questionnaire (FTF 5-15) in Iranian Children aged 5-15 years

Considering the extent of developmental-behavioral problems, existing questionnaires assess the limited aspects of these problems. Developmental -Behavioral Problem Questionnaire (FTF) is more comprehensive than other tools and made with a comprehensive look at these problems. The purpose of this study was to validate this questionnaire in Iranian society. The present study is descriptive. A sample of 700 individuals was selected through cluster sampling from Tehran, East Azarbaijan, Isfahan, Ahvaz and Kurdistan provinces, 55 subjects were excluded from the statistical analysis due to incomplete response to the questionnaires, in this way, the final sample was reduced to 645 mothers. Data were analyzed using SPSS software version 25 and LISREL. The present questionnaire consists of 18 dimensions. The reliability coefficients of the dimensions of the questionnaire are between 0/486 (defective in organizing) and up to 0/916 (academic skill deficiency). And also with regard to the fitting indicators reported, the six-factor model is considered to be the best-fit model. According to the findings of the present study, the developmental -Behavioral problems (FTF) questionnaire(FTF) in Iranian society as a tool for evaluating developmental-behavioral problems has a good validity. And can be used as a valid tool in clinical and research settings.