Research social cognitive theory and research 2-3 theorists who have had great influence on the field of social psychology

Research social cognitive theory and research 2-3 theorists who have had great influence on the field of social psychology.
How does social cognitive theories and changing a behavior reflect on individual characteristics, environmental factors, and reciprocal determinism?
-How is empirical data used to conduct community health assessments, planning, and policy making?
-What role do the theorists you chose play in shaping advocacy and public policy?
-What do they contribute in planning for community health improvement?