Measuring moral reasoning using moral dilemmas: evaluating reliability, validity, and differential item functioning of the behavioural defining issues test (bDIT)

Youn Jeng Choi, Hyemin Han, Kelsie J. Dawson, Stephen J. Thoma, Andrea L. Glenn

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

We evaluated the reliability, validity, and differential item functioning (DIF) of a shorter version of the Defining Issues Test-1 (DIT-1), the behavioural DIT (bDIT), measuring the development of moral reasoning. About 353 college students (81 males, 271 females, 1 not reported; age M = 18.64 years, SD = 1.20 years) who were taking introductory psychology classes at a public University in a suburb area in the Southern United States participated in the present study. First, we examined the reliability of the bDIT using Cronbach’s α and its concurrent validity with the original DIT-1 using disattenuated correlation. Second, we compared the test duration between the two measures. Third, we tested the DIF of each question between males and females. Findings reported that first, the bDIT showed acceptable reliability and good concurrent validity. Second, the test duration could be significantly shortened by employing the bDIT. Third, DIF results indicated that the bDIT items did not favour any gender. Practical implications of the present study based on the reported findings are discussed.

Original languageEnglish
Pages (from-to)622-631
Number of pages10
JournalEuropean Journal of Developmental Psychology
Volume16
Issue number5
DOIs
StatePublished - 3 Sep 2019

Keywords

  • defining issues test
  • differential item functioning
  • gender difference
  • moral development
  • Moral reasoning

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