Document Type : Research Paper

Authors

• masume bagheri ¹
• Saeedeh Esfandiari ²
• Mohammad Raof Anjomshoaa ³
• Abdolaziz Aflakseir ¹

¹ shiraz university

² kharazmi university

³ Shiraz University

Abstract

The Dichotomous Thinking Scale (DTS) can be used to assess the presence of a rigid, “black and white” cognitive thinking style. This study aimed to examine the psychometric properties of dichotomous thinking scale in students. For this purpose, a sample consisting of 417 students (252 female and 165 male) of shiraz university in the academic year 2023-2024 was selected by random cluster sampling and responded to the Persian version of Dichotomous Thinking (Oshio, 2009), Ambiguity Tolerance (Mc Lain, 1993) and Positive/Negative Perfectionism (Terry-short, 1995) Scales. Finally, based on data collected, exploratory and confirmatory factor analysis and criterion validity were employed to determine the construct validity and the reliability of the questionnaire was assessed via internal consistency. The results of exploratory factor analysis showed that the dichotomous thinking scale consists of three factors: preference for dichotomy, dichotomous belief and profit-and-loss thinking. The confirmatory factor analysis related to three-factor model represented an acceptable fit. Moreover, the criterion validity of the dichotomous thinking scale with Ambiguity Tolerance and perfectionism scales were adequate. Also, Internal consistency (Cronbach’s alpha) was calculated 0/70 – 0/85 and indicated appropriate reliability of the DTS. In conclusion, the Persian version of the Dichotomous Thinking Scale possesses acceptable psychometric properties and is a reliable, valid, and concise measure for psychological research and clinical Trails.

Keywords

• Ambiguity Tolerance
• Dichotomous Thinking
• Factor Analysis
• Perfectionism