Social Exchange Theory proposes that people view relationships in economic terms, assessing costs and rewards to determine if a relationship is beneficial. It assumes humans seek benefits and avoid punishments, act rationally, and use cost-benefit standards that can change over time and between individuals. Relationships are interdependent and dynamic processes. A relationship is evaluated based on comparison levels - what one expects to receive - and alternatives. Patterns of exchange include reciprocal behavior sequences aimed at goals, power dynamics, and behavior control. Exchanges can be direct between two people or generalized through social networks. Relational Dialectics Theory views contradictions as inherent in relationships and central to communication dynamics. Relationships involve tensions between opposing forces like autonomy and connection.