Translation, Cross-Cultural Adaptation, and Psychometric Properties of the Perceptions of Dating Infidelity Scale in Brazilian Portuguese.

The Perceptions of Dating Infidelity Scale (PDIS) assesses how people perceive infidelity through specific behaviors. Originally developed by Wilson et al. (2011), it contains 12 items distributed into three factors: (1) ambiguous, (2) deceptive, and (3) explicit behaviors. In the present research, translation, cross-cultural adaptation, and validation of the PDIS in Brazilian Portuguese were performed. First, qualitative analyses took place: translation, translation synthesis, content validation, pre-test, and reverse translation. Then, quantitative analyses were conducted: psychometric parameter tests with confirmatory factor analysis and reliability. A total of 252 participants were recruited, 160 of whom were female (63.5%). The results indicated consistent PDIS adequacy (conceptual and idiomatic equivalences); satisfactory content validity coefficients regarding language clarity, practical pertinence, and theoretical relevance; and an almost perfect level of consensus regarding the theoretical dimension. The application of the pre-test was proven to be a good parameter for estimating the comprehension of the instrument in the culture for which it was intended. Confirmatory factor analysis showed good indices of adjustment quality of the tested trifactorial model (three factors being identified with ambiguous, deceptive, and explicit behaviors). Therefore, the structure indicated in the original version was corroborated and the instrument's reliability confirmed. The Brazilian Portuguese PDIS is a useful tool for evaluating infidelity perceptions in the Brazilian culture.