Translation, cultural, adaptation and validity evidence of the negative mood regulation scale for the Brazilian context

The aim of the present study was to translate and adapt the Negative Mood Regulation Scale (NMR-S) into Brazilian Portuguese (NMR-B) and to seek evidence of dimensionality, reliability, convergent and discriminant validity. The translation and cultural adaptation of the NMR-B went through of six steps: 1) translation of the instrument from the source language into the target language; 2) synthesis of the translations; 3) review of the synthesis by expert judges; 4) assessment of the instrument by the target audience; 5) back-translation; 6) pretesting. In the process of cultural adaptation of the scale, seven items were created, specifically for the Brazilian version. Four hundred and forty-six participants were evaluated, between 18 and 59 years old, through online data collection (67.5% women). The psychometric results show a unidimensional model, and the analysis of the modification indices indicated 35-item for of NMR-B. This model showed satisfactory internal consistency (a = 90). In addition, the results of convergent validity indicated significant associations between higher levels of NMR-B with lower levels of difficulty in emotion regulation, and with levels of depression, anxiety and stress, and higher levels of NRM-B were negatively related to internality. The results of the present research have demonstrated that NMR-B is an adequate and reliable instrument to in Brazilian population.