Reported at this symposium were investigations using the projective "Tree Drawing" test in (1) a case study of the impact of natural and cultural environments on Japanese children attending elementary and junior high schools in Singapore by Kimio Yoshikawa and K. Loganathan Mutharayan; (2) a study comparing cognitive processes of normal, mentally retarded, slow learning, and handicapped children by Shripati Upadhyaya and K. Loganathan Mutharayan; and (3) an abstract of a case study of cultural change from pre-adolescence to adolescence of Japanese students attending junior high in Singapore, by Fuminari Nagano and Kimio Yoshikawa. Providing the first quantitative analysis of the culture change of Japanese children residing in a country foreign to them, the study of children attending the Japanese School in Singapore reports the form analysis of the projective test and its relationship to cultural and ecological variables. Findings indicated that the Japanese children were maximally affected by their new environment in the first year of stay during which they became "tropicalized" in their functioning. The study of cognitive processes of normal, deaf, slow learning, and mentally retarded Malaysian, Chinese, or Indian children points out differences by psychological condition/handicap and culture in the distribution of form types and their space configurations. Findings are interpreted in terms of Jungian analytical psychology and principles of agamic psychology (Mutharayan, 1983, 1984). The study of Japanese junior high school students in Singapore indicated that across three grades the tree forms drawn changed from the juvenile to the adult type. A total of 60 percent of students in the first year of junior high drew predominantly palm trees; drawings of students in later grades revealed a re-emergence of the temperate form. (RH)