a more understanding about aids: design and assessment of validity and reliability of several new scales

Introduction: given the high cost of aids, research on high-risk behaviors associated with aids is an essential requirement today. therefore, the present study aimed to construct and standardize tests associated with aids-related risky behaviors. methods: to assess the validity of the questionnaires, the experts’ viewpoints from different domains were qualitatively and quantitatively included. additionally, to assess the reliability of the questionnaires, a sample of 31 subjects was selected and then examined on two separate occasions in a fortnight's time. then, the validity and reliability of the instruments were assessed in a sample of 475 subjects. results: the results of exploratory factor analysis showed that for aids health literacy and aids risk perception questionnaires two factors are extractable; while for the questionnaires of self-efficacy in controlling risk behavior and controlling risk behavior associated with aids one factor is extractable. finally, 14 items were approved for each of the aids health literacy and self-efficacy in controlling risk behavior questionnaires; while 13 items were approved for each of the controlling risk behavior associated with aids and aids risk perception questionnaires. each of the four questionnaires had a good internal consistency (cronbach's alpha > 0.70). interclass correlation coefficient (icc) amounts related to the test-retest reliability were greater than 0.80, which indicates the reliability of the instruments. conclusion: according to the results of the present study, it was concluded that all four aids-related questionnaires enjoyed acceptable validity and reliability.