5.3. Measures
The questionnaire employed in this study included the four following validated French-language scales aiming to capture short-term changes in mental health state with sufficient sensitivity and specificity. At each timepoint, participants were instructed to evaluate the extent to which the statements applied to them over the past two weeks while they engaged in doctoral research activities (writing, analyzing data, etc.), ensuring the measures were contextualized. Additionally, a custom-made scale was developed to evaluate the perceived impact of writing retreat aspects on doctoral mental health post-intervention (i.e., at T2 for the EG and at T3 for the waitlist CG), and to gather qualitative interpretations from participants regarding these aspects.