Tehran University of Medical Sciences Iranian Journal of Psychiatry 1735-4587 7 2 2012 06 15 74 81 Shahrum Vahedi Department of Psychology, University of Tabriz, Tabriz, Iran. Farahman Farrokhi Ali Mahdavi Samad Moradi 2015 10 14 Objective:The present study aimed at validating the structure of Career Decision-making Difficulties Questionnaire (CDDQ).  Methods: Five hundred and eleven undergraduate students took part in this research; from these participants, 63 males and 200 females took part in the first study, and 63 males and 185 females completed the survey for the second study. Results: The results of exploratory factor analysis (EFA) indicated strong support for the three-factor structure, consisting of lack of information about the self, inconsistent information, lack of information and lack of readiness factors. A confirmatory factor analysis was run with the second sample using structural equation modeling. As expected, the three-factor solution provided a better fit to the data than the alternative models. Conclusion: CDDQ was recommended to be used for college students in this study due to the fact that this instrument measures all three aspects of the model. Future research is needed to learn whether this model would fit other different samples. https://ijps.tums.ac.ir/index.php/ijps/article/view/211 https://ijps.tums.ac.ir/index.php/ijps/article/download/211/207