Psychological assessment ofjuveniles being considered for waiver to adult criminal courts often requires systematic evaluation of dangerousness, maturity-sophistication, and amenability to treatment (ATX). Despite the importance of these constructs to the evaluation of juveniles, little is known about the criteria that constitute these three constructs. This study was designed to assist in clarifying the constructs of dangerousness, maturity-sophistication, and ATX that typically guide juvenile transfers. Generally, prototypicality ratings were aligned with the current literature on dangerousness, sophistication-maturity, and ATX.