Exploratory Analysis of Interpersonal and Intrapersonal Psychological Processes Implied in Risk-taking and Suicidal Behaviors, in Adult and Adolescent At-risk

"* The sense of thwarted belonging and perceived burden will be measured using the Interpersonal Needs Questionnaire (INQ; Van Orden et al., 2012). The back-translated French version by Landrault et al. (2019) will be used. This scale is based on a seven-point Likert scale, ranging from 1 (not at all true for me) to 7 (very true for me).~* To assess impulsivity, we will use the short version of the UPPS validated in French by Billieux and colleagues (2012). It comprises 20 items divided into 5 dimensions (negative urgency, positive urgency, lack of premeditation, lack of perseverance and sensation seeking). Participants were asked to respond on a Likert scale from 1 (I strongly agree) to 4 (I strongly disagree).~* We will use the French version of the SRS (Suicidal Rumination Scale, Rogers et al., 2022), back-translated for this study. This eight-item scale assesses suicidal ruminations."

"* One of the behavioral tasks based on a real-life model of risky decision-making is BART (Lejuez et al., 2002, 2007). It is based on a conceptual framework of balance between reward and loss potential (Leigh, 1999; Lejuez et al., 2002).~* We will measure one of the cognitive aspects of risk-taking behavior, especially the general cognitive decision-making styles (GDMS, from Scott and Bruce, 1995; Gerard et al., 2016).~* We will measure negative (NRTB , Duell et al., 2020) and positive (PRTB, Fryts et al., 2024) self-reported risk-taking behaviour."

"Suicidal ideation and behavior were measured using the screening grid, the Columbia Suicide Severity Rating Scale (C-SSRS screen version, Posner, Brown, Stanley et al., 2011). It is composed of 6 questions, which take into account the potential method of suicide, the presence of suicidal intent and/or ideation with a plan or intention. This scale has high reliability and validity in general paediatric emergencies (Scudder et al., 2023) and psychiatric samples (Campos et al., 2023).~It classifies people as being at low or high risk of suicide, based on the presence or absence of significant active suicidal ideation in the last three months."