As APA policy, the Model Act for State Licensure of Psychologists serves as a prototype for drafting state legislation regulating the practice of psychology. State legislatures are encouraged to use the language of this document and the policies that it espouses as the model for their own state licensure laws. Inevitably each state law will reflect compromises and changes particular to that state, but the APA Model Act is meant to serve as a guide for those involved in the drafting process. State licensing boards must develop their own rules and regulations to supplement the legislation proposed here. This document also serves to educate legislatures about psychology training and practice and serves to synthesize APA policies that bear on the education, training, and practice of professional psychology. Each section of the proposed Model Act is introduced by commentary, the purpose of which is to explain the rationale for the proposed section that follows. To differentiate between the commentary and the proposed statutory language, the latter is italicized. (Contains 3 footnotes.)