The purpose of this symposium was to make clear that problems were pointed out in the various research methods on the psychology of adolescence. Seven approach methods were critically examined by the following reporters. S. Toda reported the results and problems of the interactional approaches by which a dialogue between parents and adolescents was studied. Merits and demerits of the statistical analysis of questionnaire deta concerning the dialogue between parents and adolescents were pointed out. He added that the dynamic and systematic methods combining report analysis, interview method and clinical method were very important in order to understand adolescents liveing in a concrete world.K. Sato distincted the three types of experimental studies of adolescence ; the effects of political and economical conditions upon adolescence, the effects of counselling and educational guidance upon adolescents and the definitive and operational effects of various conditions upon adolescents by psycho-metric method. Metrics of the third type of experimental method were pointed because of its operational ability of subject behavior. He also added the necessity of questionnare and other ressarch method in order to cover the various problems of adolescents. M. Matsushita clarified the characteristics of the directive observational method as follows : (1) to understand adolescents in helping them to solute their urgent problem. (2) to guide adolescents from where the most adequate method, without the previously provided hypothesis, was always looked for. (3) to attain ultimately the nomothetic law to understand adolescents in a continuous study in a search for a unique law upon adolescents. Y. Gomi emphasized the necessity and importance of phenomenological approach to understand adolescent by the concrete analysis of adolescent's poems. He concluded that the essence of phenomenological approach should be the clarification of total entity adolescent as structural relations. He examined the relation of the problem and research method, the possibility of original research method for the psychology of adolescent and the nature of statistical approaches to grasp the structure of adolescents' life. He also pointed out that the statistical approach should be allocated as one of these various methods judged useful and appropriate for understanding adolescent. M. Fukutomi emphasized the importance of reconstruction of the framework to understand contemporary adolescents. He also proposed the necessity to have dialogic approach toward adolescent by which the new adequate fremework might be reconstructed from the standpoint of adolescents themselves. Y. Kasama reiterated the importance of longitudinal method by which the dynamic process of personality formation and human development should only be clarified. He also proposed that the unique reseach method for psychology of adolescence should not be necessary but that the new method for the study of human development should be used in a better way. He also insisted that participating observational approaches should be considered as the most useful and adequate for the study of human development. Considering these propositions, the organizer would like to wish that various reseach methods should be studied and that these should be integrated in the near future.