Journal of Substance Abuse, 8(2), 181-193(1996) A Cocaine Negative Consequences Checklist: Development and Validation Elizabeth M. Michalec Brown University Center for Alcohol and Addiction Studies Damaris J. Rohsenow Peter M. Monti Providence VA Medical Center Brown University Center for Alcohol and Addiction Studies Selene M. Varney Rosemarie A. Martin Achintya N. Dey Mark G. Myers Brown University Center for Alcohol and Addiction Studies Alan D. Sirota Providence VA Medical Center Brown University Center for Alcohol and Addiction Studies Awareness of negative consequences of cocaine use is theoretically important for motivation for treatment and relapse prevention. This study reports on the develop- ment of an instrument designed to assess cocaine users' self-reported negative conse- quences of cocaine use. Two samples of cocaine users in treatment for substance abuse completed the Cocaine Negative Consequences Checklist (CNCC). The measure, which is unidimensional in nature with four content area subscales that may be scored, was found to possess excellent reliability across the two samples. The convergent and discriminant validity of the CNCC was supported by the pattern of relationships with other measures of cocaine consequences, cocaine use, the Addiction Severity Index, and with demographic measures. Further research is needed on the utility of this measure in treatment and research. This research was partially supported by Grant 1RO1 DA04859 from the National Institute on Drug Abuse, awarded to Peter M. Monti, Grant 2R01 DA04859 from the National Institute on Drug Abuse awarded to Damaris J. Rohsenow, and by a Veterans Affairs Merit Review Grant awarded to D.J.R. and P.M.M. We are grateful to the staffs of The Good Hope Center in West Greenwich, RI, and of Butler Hospital, Rhode Island Group Health Association (Harvard Community Health Plan), and the Provi- dence Veterans Affairs Medical Center, all of which are located in Providence, RI, for their support and assistance. We would also like to give special thanks to William IL Zwick for his extensive statistical and design advice. Correspondence and requests for reprints or for a copy of the scale should be sent to DamarisJ. Rohsenow, Center for Alcohol and Addiction Studies, Brown University, Box G-BH, Providence, RI 02912. 181