The purpose of this paper was to undertake a comprehensive review of Kirkpatrick's four-level evaluation model. Included was a brief discussion on the additions that have been suggested by critics attempting to make it more responsive to training practitioners' needs as well as researchers' inquiries. Also included is a contrast of Kirkpatrick's model with the expanded model offered by Holton (1996) and a discussion of several key areas of agreement with his model as well as areas of concerns with Holton's criticism of Kirkpatrick's four-level model. This article also discussed the relationship of two key factors, not widely examined in the transfer of training literature that could impact the transfer of training to the workplace, namely trainee attributes and the supervisory role in training transfer as affected specifically by a manager's degree of transformational leadership. A model depicting the balance between these two factors on training transfer was presented in an attempt to assist training professionals seeking to further understand the effects of this interaction on training transfer. Several recommendations were suggested to help training practitioners. Finally several recommendations were given for future studies.