Schemas determining the incentive value of sales promotions

There are three types of schemas for evaluating sales promotions: schemas using cognitive algebra, schemas analogous to perceptual processes, and simple nonalgebraic heuristics. Each type of schema requires different information to evaluate a promotion. The schema a consumer uses to evaluate a promotion may therefore determine whether or not the promotion is seen as valuable. The effects of salespeople, product type, and the consumer's situation on the schemas used to evauate promotions are discussed.