<![CDATA[Moral disengagement is a psychological mechanism that allows individuals to justify behavior that violates moral standards by temporarily disengaging self-regulatory processes. The availability of an instrument that can assess this mechanism is important for understanding unethical behavior among emerging adults in Indonesia. This study aimed to develop a Moral Disengagement Scale for emerging adults aged 18–25 years and to examine its content validity, item discrimination, construct validity, and internal consistency. A quantitative instrument-development design was employed with 151 participants aged 18–25 years who completed the scale online. The initial 80 items were evaluated through expert judgment using Aiken’s V, followed by item analysis and confirmatory factor analysis (CFA) based on Bandura’s eight moral disengagement mechanisms. The content validity assessment yielded mean Aiken’s V coefficients of 0.894 for relevance and 0.772 for clarity. Item analysis resulted in a final scale comprising 56 items, including 27 favorable and 29 unfavorable items. The overall scale demonstrated good internal consistency, with a Cronbach’s Alpha coefficient of 0.868. CFA results indicated adequate fit for several dimensions, although some dimensions showed marginal or inadequate fit based on selected fit indices and therefore require further evaluation. These findings provide preliminary psychometric evidence for the Moral Disengagement Scale and indicate its potential for assessing moral disengagement among emerging adults in Indonesia.]]>
