This study evaluated whether a traumatic experience such as an earthquake has any effect on the probability of suicide, especially in those who seem psychologically healthy. Prevention & support parameters are evaluated. Two groups of 35 people each were compared regarding their probability of dying by suicide. One group had experienced an earthquake & the other had not. The total scores of the Suicide Probability Scale show no significant difference between the groups. There was a significant difference between the two groups in that those with earthquake experience had a dominant feeling of hopelessness. Feeling prepared for the possibility of coming disasters & supporting each other seem to be factors that prevent negative feelings. (6 refs.) JA