The UPPS-P SF (Cronbach's alphas in the present sample: .84, .76, .77, and .79 for lack of premeditation, urgency, sensation seeking, and lack of perseverance, respectively) and RRS (Cronbach's alphas for brooding and reflection in the present sample: .85 and .78, respectively) were used to assess trait impulsivity and rumination, respectively. Descriptions of these measures can be found in the Measures section of Study 1. Suicide risk was assessed via the Suicidal Behaviors Questionnaire-Revised (SBQ-R) (Osman et al., 2001). The SBQ-R is a 4-item questionnaire that assesses risk for future suicidal behavior, based on whether an individual endorses a lifetime history of suicidal ideation or a suicide attempt, self-reported frequency of suicidal ideation in the previous 12 months, whether the individual has ever threatened to attempt suicide, and the person's self-reported likelihood of making a suicide attempt in the future. Total scores range from 3 to 18. The questionnaire has been found to have good internal consistency reliability in an undergraduate sample and has been validated with other measures of suicide risk (Osman et al., 2001). Cronbach’s alpha in the present study was .81, and total scores ranged from 3 to 16, with an average of 4.23 (SD ¼ 2.26).