This document summarizes key aspects of decision making and problem solving. It discusses the nature of decision making, types of decisions, and conditions involving certainty, risk and uncertainty. It describes the classical rational model of decision making and the administrative model that recognizes limitations like bounded rationality and satisficing. Political forces, intuition, risk propensity, group dynamics and phenomena like groupthink that can influence decision making are also outlined. Various decision making techniques involving groups are defined, including their advantages and disadvantages.