Main Idea	Emphases in Biopsychopsocial	Developmental Issues
PSYCHODYNAMIC   Erikson	Personality develops through a sequence of stages	Psychological, social & life cycle are crucial. Less emphasis on biological	Interactionism, discontinuity, universal sequence with individual rate variation
LEARNING   Watson/Skinner   Bandura	Environment controls behavior Learning through modeling & observation	Major focus: social Minor focus: Bio & Psyc Little recogn. of life-cycle	Strong emphasis on nurture, continuity & universal principles of learning
COGNITVE     Piaget/Kohlberg   Information-processing	Thinking develops in sequence of stages   Thought develops through increases in info handling	Main focus: bio & social Minor focus:  Psyc Little recogn. of life-cycle Main focus: Bio & Psyc Minor focus:  Soc & Life-cycle	Strongly nature, discontinuity & universal stage sequence   Interactionism, continuity & differences in universal structures
ECOLOGICAL & SYSTEMS     Brofenbrenner	Developing person embedded in a series of of interacting systems	Main focus:  Social Mod focus: Psyc & Life-cycle  Lo focus:  Bio	Interactionism, continuity, context-specific