Comparing two types of treatment modalities in treating homeless, ment
ally ill, chemical-abusing (HMICAs) men and studying their characteris
tics, 723 HMICAs were interviewed on their childhood and family backgr
ound and their psychiatric and substance abuse disorders, and then ran
domly assigned into either therapeutic community (TC) or community res
idence (CR) programs. The TC and CRs were found to differ from one ano
ther in their intake and admission procedures, their preadmission and
postadmission dropout rates, and the effects of treatment on psycholog
ical status. The TC admitted their clients into treatment faster, tend
ed to take more impaired clients, and had a lower preadmission dropout
rate than the CRs did. The CRs had a lower postadmission dropout rate
and were able to retain clients longer than the TC did. Comparing cli
ents who stayed in treatment one year or longer, the TC appears to be
more effective than the CRs in reducing depressive, psychotic, and fun
ctional symptoms. HMICAs' childhood and family background reveal sever
e parental deprivations and high prevalence of alcohol and other drug
abuse, mental illness, and criminal behavior among the clients' parent
s. HMICAs' characteristics suggest that these men are completely outsi
de mainstream society. They are severely impaired psychiatrically, chr
onically addicted, and often involved with the criminal system, thus o
ccupying multiple deviant roles.