Skinner is, without a doubt, one of the most predominant figures in the development of Behavior Modification and Behavior Therapy. Skinners' work is essential to the development of Behavior Modification and Behavior Therapy. Beginning with the social need for efficient psychotherapy, and after having generated a solid theoretical body of behavioral laws, Skinner indicated and also developed the appropriate path towards efficient interventions for unadaptive behavior. He developed a new theory regarding abnormal behavior (psychopathology), as well as a procedural model for evaluation (diagnosis) and intervention: “The functional analysis of behavior”. His applications for this kind of work are pioneering and at the same time, he is the agglutinant figure of what we today call “Behavior Modification and/or Therapy”.

It is remarkable that a scientist could change the theories and practices of a discipline as radically as Skinner and his work did. His work, however, still has its limitations. The best way to acknowledge and pay tribute to Skinners' work is to overcome these limitations.