Therapy Goals: Goals vary depending on context and theoretical orientation. A radical behaviorist's goal is to increase a desired behavior and decrease an undesirable behavior (usually the goal in a school setting). The goals of social-cognitive theory include modifying distorted cognitions and undesirable or maladaptive behaviors. 8. Empirical Evidence: Behavior therapy, since its founding, has measured observable events using empirical and qualitative studies. A study by Ehlers et al (2004) found that Ethler and Clark's CBT model for treating post-traumatic stress disorder significantly (p < 0.0005 on all measures) decreased PTSD symptoms of an experimental group compared to a control group. 9. Strengths and Limitations: Behavioral therapists are interested in observable behaviors regardless of race, ethnicity, and socioeconomic status. One of the limitations I have seen in schools is that non-dominant cultures in the United States may accept behaviors that may be considered inappropriate in the United States. A school psychologist may need to modify these behaviors even if they are not inappropriate for the school culture..