Conflict occurs when disagreements exist over issues or goals, or when emotional tensions cause friction between individuals or groups. There are different types and levels of conflict, including substantive, emotional, intrapersonal, interpersonal, intergroup, and interorganizational. Conflict can be functional when it improves decision making, but dysfunctional when it harms relationships. Successful conflict management involves understanding the causes and stages of conflict, then applying appropriate resolution techniques like compromise, problem solving, or altering structural variables to address the underlying issues fueling the conflict.