The papers explore the nature and function of motivation, the influence of social factors on human decision-making and behavior, and the role of psychological processes in legal and organizational contexts. They discuss how motivation is influenced by internal and external factors, including goals, emotions, and relationships, as well as the influence of social and cultural context on the formation and expression of motivation. Attention is also given to the role of social categorization, identity, and processes of intergroup interaction in shaping attitudes and behavior. The papers examine how motivation affects decision-making in different contexts, including legal justice, negotiation, organizational behavior, sports, and politics, highlighting the importance of understanding social psychology in explaining and influencing human behavior in many areas of life.