A licensed psychologist since 1989, Dr. Davidson was trained and received degrees or certifications from:
- University of Rochester: BA with Distinction in Psychology
- Michael E. DeBakey VA Medical Center – Houston: Predoctoral Internship
- University of South Carolina: Ph.D.
- University of Texas M.D. Anderson Cancer Center: Postdoctoral Fellowship
He is also a member of the Texas Psychological Association, the Houston Psychological Association, and the Sam Houston Area Psychological Association.