“…The scale has 26 items that cover changes in rumination, hopelessness, aggressive thoughts, risk taking, and perfectionism (e.g., "When I feel sad, I more often think that I can make no one happy"; "When in a sad mood, I more often think about how my life could have been different"; "When I feel down, I more often feel hopeless about everything"; "When I feel somewhat depressed, I think I can permit myself fewer mistakes"). As noted earlier, several studies support the validity of the scale as a measure of CR (Merens et al, 2005;Van der Does, 2002a, 2002b, 2005Williams et al, 2006). The mean score of the LEIDS was 24.4 (SD ϭ 12.4) in a healthy population and 36.4 (SD ϭ 15) in a previously depressed sample (Van der Does, 2005).…”