validity and reliability of activities coaching context questionnaire

background : learning in a clinical environment is an inseparable part of a training program in medical education. to evaluate the quality of training in a clinical environment, a comprehensive questionnaire which is adjusted for local purposes is essential. this study was conducted to determine the validity and reliability of activities coaching context (acc)-questionnaire from the perspective of residents and students in a clinical learning environment.   methods :this was a cross-sectional study conducted with 65 residents and students of semnan university of medical sciences. the content validity of the questionnaire was confirmed by the judgment of a panel of ten experts in medical education. the construct validity of the questionnaire was determined by factor analysis. data were collected and analyzed by spss16.   results: the ratio and index of content validity calculated by experts’ view were quite acceptable (0.31 and 0.7, respectively). construct validity was examined by factor analysis which confirmed seven first order factors. cronbach’s alfa coefficient revealed a high degree of internal consistency (0.932). the reliability of the questionnaire was measured by test - retest (0.9).   conclusions: the acc questionnaire appeared to be a valid, reliable and also appropriate tool to evaluate the educational quality of a clinical learning environment.