Relier Pairs Demand and Factors Affecting DemandVersion en ligne Match the concept with its description. par sarah ayyad 1 . Substitution effect 2 Complementary Goods 3 Population 4 Income 5 Demand 6 Consumer Preferences 7 Income effect 8 Advertising 9 Substitute Goods 10 Price 11 law of diminishing marginal utility amount people buy changes as purchasing power of their income changes changes—even though the income itself does not change. The amount of money or resources that an individual or household earns over a period of time. states that the marginal benefit from using each additional unit of a good or service during a given time period tends to decline as each is used. The promotion of a product or service to increase consumer awareness and demand. The individual tastes, likes, and dislikes that influence consumer behavior. The amount of money that must be paid to acquire a good or service. The quantity of a good or service that consumers are willing and able to buy at a given price. The total number of people living in a particular area. Goods that can be used in place of one another. amount people buy changes as they buy substitute products one whose price has not changed and that offers a better relative value. Goods that are typically consumed together.