Assignment task: Human intelligence: leader -In Tuckman's 1965 model of team formation, what is the leader-manager emphasis during the performing stage? Leading and managing. Managing. Leading. Managing and leading. manager testWhich statement best describes the "norming" stage of Tuckman's organizational development model? Rules, boundaries, definitions, areas of responsibility, group processes, procedures, and standards are clarified and agreed upon. Customer satisfaction and quality control become a priority. Interpersonal relationships, problem-solving, and conflict resolution become the focus. Structure, mission, values, and intent either for the team or for the organization are established.