Before revision: Stylised responses of animals in consumer demand tests 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.Lea, S.E.G., (1978).
After revision: 300px|Stylised responses of animals in consumer demand tests 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.Lea, S.E.G., (1978).