Techniques for developing the potential of culturally deprived people cannot be developed without more knowledge of the basic mechanisms of mental change. Psysiological generation and regeneration are both apparently governed by the same set of mechanisms. Regeneration is possible only when a part of the damaged structure is left, and these mechanisms are part of its genetic blueprint. Since psychological phenomena are a subclass of biological phenomena, we may expect the same convergence for mental change. Any developmental process of mental regeneration begins at some point on the sequence of stage organization. It appears, although the evidence is much more tenuous than on physiological regeneration, that developmental rehabilitation ends at some point further along the stage sequence. If the beginning and end stages of mental regeneration are the same as mental generation, then there should be fundamental convergence between their courses and mechanisms. It is this theoretical deduction that requires much empirical investigation if success in developing the potential of culturally deprived people is to be attained. [Not available in hard copy because of marginal legibility of original document.] (Author/JM)