Home › Authors › Marty Sapp 👤 Marty Sapp b. 1958 ยท 4 books Books by Marty Sapp Primer on effect sizes, simple Primer on effect sizes, simple research designs, and confidence intervals 2017 Psychodynamic, affective, and Psychodynamic, affective, and behavioral theories to psychotherapy 2009 Cognitive-Behavioral Theories of Counseling 2004 Psychological and Educational Test Scores 2002