Historical Introduction to Clinical Psychology and Psychotherapy -- Toward a Science of Clinical Psychology and Psychotherapy: Theory and Practice -- The Cults of Psychotherapy -- Beyond Reliability and Validity: Toward Specificity in Clinical Psychology and Psychotherapy -- Stepped-Care Research in Clinical Psychology and Psychotherapy -- The Criterion of Concreteness: Seven Psychological Orphans in Search of a Theory : Toward a Neo-Behaviorist View -- Epilogue and Conclusions: Toward a Hierarchical Personnel Structure in Clinical Psychology and Psychotherapy.