James O. Prochaska

James O. Prochaska (b. 1943) is a Professor of Psychology and director of the Cancer Prevention Research Center at the University of Rhode Island and developer of the Transtheoretical Model of Behavior Change beginning in 1977. Prochaska earned his B.A. in Psychology at Wayne State University in 1964, followed by his M.A. (1967) and Ph.D. Degrees (1969) both at Wayne State. He is the author or co-author of over 250 publications on the dynamics of behavioral change - most of which defend the TTM.

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