Which is the most significant factor in distinguishing those who commit suicide from those who make suicidal attempts or threats?

A) Social isolation
B) Level of stress
C) Degree of depression
D) Desire to punish others

Social isolation is a significant factor in distinguishing adolescents who will kill themselves from those who will not. It is also more characteristic of those who complete suicide than of those who make attempts or threats. Level of stress, degree of depression, and desire to punish others are contributing factors in suicide, but they are not the most significant factor in distinguishing those who complete suicide from those who attempt suicide.