The present study examined the etiology of suicidal behavior from cognitive
and developmental perspectives in a sample of 181 suicidal and nonsuicidal
college students. We hypothesized that cognitive functioning would serve a
s a mediator between early life events and suicidal behavior. The present s
tudy examined child maltreatment, family instability, and poor general fami
ly environment as early negative life events, and examined self-esteem, loc
us of control, hopelessness, and problem-solving deficits as cognitive fact
ors. In addition, individuals' perceived social support before age 18 and c
urrent social support and life stress were also examined in relation to the
preceding variables. A series of structural equation analyses indicated th
at early negative life events have a mild impact on suicidal behavior, but
a stronger impact on cognitive deficits, which in turn have a strong impact
on suicidal behavior.