Matches in DBpedia 2015-10 for { ?s ?p "Consumer demand tests for animals are studies which determine the strength of motivation animals have for resources based on human patterns of purchasing resources with a limited income. For humans, income and the cost of resources is usually measured in money; in animal studies the cost is usually a decrease in fitness represented by energy costs, time costs or a risk of injury. Costs of resources can be imposed on animals by an operant task (e.g. lever-pressing), a natural aversion (e.g."@en }
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- Consumer_demand_tests_(animals) comment "Consumer demand tests for animals are studies which determine the strength of motivation animals have for resources based on human patterns of purchasing resources with a limited income. For humans, income and the cost of resources is usually measured in money; in animal studies the cost is usually a decrease in fitness represented by energy costs, time costs or a risk of injury. Costs of resources can be imposed on animals by an operant task (e.g. lever-pressing), a natural aversion (e.g.".