As psychoanalytic knowledge and experience grows, it becomes evident that psychic structure is not necessarily consolidated by the end of adolescence. Reorganization of the unconscious and restructuring and adaptive coherence of the self can continue to occur well into adulthood. Kaplan presents rich clinical data gleaned from therapeutic work with thirty adults, aged twenty-two to thirty-seven, who changed careers into or within medicine, demonstrating this continuing psychological process. He concludes that "psychoanalysis may be viewed as a special form of facilitation of adult development provided by ordinary relationships in normals. As a corollary, the analyst or therapist may be regarded as a version of the mentor."