Quantitative emotional regulation assessment
The Difficulties in Emotion Regulation Scale (DERS), developed by Gratz & Roemer in 2004, is the Gold Standard to assess emotional regulation [Participants had to indicate how often each item applied to themselves, with responses ranging from 1 to 5, where 1 is almost never and 5 is almost always. The scale yields a total score (range 36 – 180), where higher scores indicate a greater degree of impairment in emotional regulation. Reverse items are recoded so that higher scores in every case indicate greater difficulties in emotional regulation. The DERS has demonstrated excellent internal consistency, with Cronbach's alpha coefficients higher than 0.90 for the overall score and > 0.80 for each of the 6 dimensions and excellent construct validity [In the absence of a Metropolitan French version, we chose to adapt the DERS from the Swiss [