1. The focus of this review is on helping behavior from indigenous social networks following natural disasters. In some cases, human-induced catastrophes (e.g., a collapse of a dam) share many features with natural disasters, and therefore could be included here. However, became of space limitations, we excluded from this review research on technological disasters that either do not have well defined low points ("worst is over") and are not associated with immediate and clear damages (e.g., nuclear power plant accident, toxic waste spill) or are confined to relatively small groups of individuals (e.g., transportation disasters). For definitional issues, see. e.g., R Cist and B. Lubin, Eds., Psychosocial Aspects of Disaster Wiley. New York, 1989).
2. T. Drabek and W. Key, Conquering Disaster Family Recovery and Long-Term Consequences (Irvington Publishers, New York, 1984); S.D. Solomon. Mobilizing social support networks in times of disaster, in Trauma and its Wake: Vol. 2. traumatic Stress theory, Research, and intervention, C. Figley, Ed. (Brunner/Mazel, New York, 1986).