The aim of this inquiry was to evaluate the existing literature on moral evaluation and development, to develop a model to clarify the concepts of moral judgement, development and commitment, and to specify their sources, structures, and interrelations. The purpose was to try to resolve whether these concepts are best understood from an instinctivist, operant conditioning, social learning, or stage-theory approach. Current issues in the field, significant scientific theory, and the relevance of these matters for public policy are discussed. Research procedures included: a review of the literature; construction of a classification scheme of essential elements in the theories reviewed; an application of these elements to classes of human characteristics; and an attempt to evolve a value-free concept of the moral domain. Findings dealt with generalizations about theories of human behavior and moral action. Implications of the findings present negative warnings about prevalent attitudes toward the inculcation of moral codes which stress democratic liberalism. The bibliography partially lists the pertinent literature (72 documents) and lists all works analyzed in the research process. (Author/KSM)