Tehran University of Medical Sciences Iranian Journal of Psychiatry 1735-4587 9 3 2014 09 15 163 8 Sodeh Tavakkoli Department of Psychology, University of Payam-e -Noor, Tehran, Iran Majid Saffarinia Department of Psychology, University of Payam-e -Noor, Tehran, Iran Mohammad Mahdy Asaadi Department of Psychology, University of Payam-e -Noor, Tehran, Iran Abbas Norouzi Javidan Brain and Spinal Cord Injury Research Center (BASIR), Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran Marzieh Hajiaghababaei Brain and Spinal Cord Injury Research Center (BASIR), Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran 2015 10 14 Objective: This study aimed to develop and validate a questionnaire to measure waiting anxiety . Methods: This was a cross-sectional study. Extensive review of literature and expert opinions were used to develop and validate the waiting anxiety questionnaire. A sample of 321 participants was recruited through random cluster sampling (n= 190 Iranian men and n= 131 women). The participants filled out WAQ, the Speilberger‘s State-Trait Anxiety Inventory (STAI), Burtner Rating scale (BRS) and Eysenk Personality questionnaire (EPQ) for adults . Results: Internal consistency of WAQ was revealed, meaning that all the 20 items were highly correlated with the total score. The Cronbach alpha equaled 0.83 for the Waiting Anxiety Questionnaire . The Pearson correlation coefficient of the questionnaire with the STAI, BRS and extraversion and neuroticism subscales of EPQ was 0.65, 0.78, - 0.47 and 0.43, respectively, which confirmed its convergent and divergent validity. Factors analysis extracting four cognitive, behavior l, sentimental and physiological factors could explain 67% of the total variance with an Eigen value of greater than 1. Conclusion: Our findings suggest that WAQ possesses appropriate validity and reliability to measure the individuals’ anxiety during the waiting time . https://ijps.tums.ac.ir/index.php/ijps/article/view/45 https://ijps.tums.ac.ir/index.php/ijps/article/download/45/41