Among 180 Turkish university students, the probability of suicide was strongly predicted by both hopelessness and deficiencies in problem solving. In addition, for women, unhealthy attachment styles (preoccupied and dismissing) also predicted suicidality. The clinical implications of these findings are that psychotherapists should focus on helping suicidal adolescents improve their problem solving skills and decreasing their hopelessness and, for women, assisting them to develop healthier relationship styles. (Contains 3 tables.)