TY - GEN AU - Houghton,G TI - Optimal models for social change SN - 0007-4985 PY - 1968///0428 KW - Behavior KW - Environment KW - Group Processes KW - Group Structure KW - Models, Theoretical KW - Psychology KW - Psychometrics KW - Social Change KW - Sociology N1 - Publication Type: Journal Article UR - https://doi.org/10.1007/BF02476932 ER -