Federal Bureau of PrisonsStructuring a system of psychological services for offenders and releasees requires an understanding of the offenders who voluntarily seek psychological services upon admission. To begin to develop such an understanding, a sample set of responses to the Psychological Services Inmate Questionnaire (PSIQ) from 2,674 newly committed male and female federal offenders were examined. About one-tenth of the sample made a request for psychological services upon admission to prison without a mandate or referral, and confirm that a combination of prior mental health treatment and current symptoms are among the factors associated with making the request. Logistic regression analysis indicated male gender, receipt of mental health treatment prior to current incarceration, history of a head injury, current symptoms of depression, hopelessness, nervousness, sleeping problems, and racing thoughts, were independent and significant predictors of service request. Implications for future corrections research, clinical training and practice are discussed.