Journal of Applied Psychological Research

Psychometric Properties of the Persian Version of Gullibility Scale in Students

Document Type : Research Paper

Authors

1 Department of Psychology and Education of Children with Special Needs, Faculty of Education and Psychology, University of Isfahan, Isfahan, Iran.

2 Associate Professor, Department of Psychology of Children with Special Needs, Faculty of Education and Psychology, University of Isfahan, Isfahan, Iran.

Abstract

The objective of this study was to construct and standardize the gullibility personality questionnaire. This investigation was conducted in Isfahan city in 1401 and was of the standardization and validation type. The statistical population comprised all pupils enrolled in the University of Isfahan and the Isfahan University of Medical Sciences. The available sampling method was employed to select 200 individuals, including 109 males and 91 girls, from this group. The results of the analysis of the obtained data indicated the identification of four dimensions: persuasiveness, timidity, credulity, and trust. Additionally, the reliability of the scale was examined using the methods of internal consistency and split-half. The eigenvalue associated with principal components analysis is greater than one in four cases, as indicated by the results of factor analysis. This eigenvalue accounts for 82.56 percent of the scale's variances. The correlation between the two halves was 0.702, and the split-half coefficient for the first half of the data was 0.795, while the second half of the data was 0.760. These results suggest that the gullibility scale has an internal consistency reliability coefficient. Cronbach’s alpha was 0.95 for the entire test, 0.90 for persuasiveness, 0.89 for trust, 0.79 for credulity, and 0.75 for timidity after the scale's dimensions were determined. Additionally, the correlation between the entire scale and the subscales of persuasiveness, trust, credulity, and timidity was 0.94, 0.92, 0.91, and 0.87, respectively. The conclusions of this investigation indicate that this scale possesses the requisite reliability and validity to serve as an appropriate instrument for assessing gullibility in Isfahan.

Keywords

دلاور، ع .(1379). روش تحقیق در روان‌شناسی و علوم تربیتی. تهران: انتشارات رشد.
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Journal of Applied Psychological Research
Volume 17, Issue 2
July 2026
Pages 267-279
  • Receive Date: 24 March 2023
  • Revise Date: 30 June 2023
  • Accept Date: 26 August 2023
  • First Publish Date: 08 April 2024
  • Publish Date: 01 July 2026