The document summarizes the AIDA and DAGMAR models for understanding customer behavior and advertising effectiveness. The AIDA model presents a stair-step process showing how customers move from awareness to interest to desire to action when making a purchase. Later versions added satisfaction to create the AIDAS model. DAGMAR model suggests advertising should move customers through four levels - from unawareness to awareness, comprehension, conviction, and finally action. Both models provide simple frameworks for explaining how personal selling and advertising can influence a customer throughout the purchase process.