Super-maximum security prisons have proliferated nationally, reflecting a belief among policy makers and corrections officials that such high-cost housing is effective. Yet little is known about the precise goals of "supermax" prisons, whether these goals are achieved, what unintended effects supermaxes may have, and, more generally, whether they represent a wise investment. State correctional data systems do not readily allow for assessment of these issues. The authors of this study therefore administered surveys to state prison wardens--a population uniquely situated to provide insight about supermaxes--to address existing gaps in knowledge and to inform research and policy debates. The authors discuss the study's findings and implications. Appended are: (1) Survey Questions; and (2) Descriptives. (Contains 5 tables and 1 figure.)