[Solved] The double-entry accounting system records each transaction twice. Rewards: Positive outcomes or reinforcements that follow certain actions or behaviors, motivating individuals to repeat those actions. Committed Relationship: A long-term relationship where the individuals involved agree to be emotionally and often legally connected to each other. Erotic Plasticity: Erotic Plasticity refers to the degree to which an individual's sex drive can be shaped and altered by social, cultural, and situational factors. Relationship Satisfaction: A measure of how pleased individuals are with various aspects of their personal relationships, including emotional, physical, and social dimensions.