A qualitative methodology based on the standards of criminal defense invest
igation was used to analyze the social and family histories of 16 men sente
nced to death in California. Using a multisource cross-validation methodolo
gy, we assessed patterns of impairment, injury and deficit at each of four
ecological levels: family, individual, community and social institutions. I
nvestigation documented consistent and pervasive patterns of serious impair
ment, injury and deficit across the cases and levels. The men share numerou
s risk factors and few resiliency factors associated with violence. We foun
d family violence in all 16 cases, including severe physical and/or sexual
abuse in 14 cases; individual impairments in 16, including 14 with post-tra
umatic stress disorder, 13 with severe depression and 12 with histories of
traumatic brain injury; community isolation and violence in 12; and institu
tional failure in 15, including 13 cases of severe physical and/or sexual a
buse while in foster care or under stale youth authority jurisdiction. Appr
opriate interventions might have made a difference in reducing lethal viole
nce and its precursor conditions. (C) 2000 Elsevier Science Ltd. All rights
reserved.