Recall the study reported in Exercise 6.10.2 in which Horesh et al. (A-42) investigated suicidal behavior among adolescents. In addition to impulsivity, the researchers studied hopelessness among the 33 subjects in the suicidal group and the 32 subjects in the nonsuicidal group. The means for the two groups on the Beck Hopelessness Scale were 11.6 and 5.2, respectively, and the t value for the test was 5.13.