Psychometric Evaluation of the Persian Version of the Counterfactual Thinking for Negative Events Scale (CTNES)

The purpose of this research was to examine the reliability and validity of the Persian version of Counterfactual Thinking for Negative Events Scale (CTNES). To this end, 265 students from Isfahan University were selected using a random clustering procedure, and completed the Persian version of the Counterfactual Thinking for Negative Events Scale. The factorial structural or construct validity of the CTNES by principal components analysis (PCA) with a Varimax rotation resulted in 4 factors which corresponded to 58.42% of the total variance. The factors included the following: 1) self-referent upward 2) non-referent downward 3) other-referent upward and 4) non-referent upward. The reliability of the Persian version of this scale as well as the four factors were calculated using Cronbach’s alpha and test-retest, and were all found to be satisfactory. The findings of the present study indicate that for measuring counterfactual thinking for negative events in Iran, the Persian version of Counterfactual Thinking for Negative Events Scale can be used as a valid and reliable test.