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Charley McCarthy Highsted School Assignment 4 Outline and evaluate evolutionary explanations of parental investment (24 marks) The evolutionary explanations of parental investment all believe that parents invest in their offspring in various ways, such as giving food and the energy put into rearing the child, and risks taken to protect them. This investment is defined as 'any investment made by a parent in one of his or her offspring that increases the chance that the offspring will survive at the expense of the parent's ability to invest in any other offspring (alive or yet to be born)' by Trivers, 1972. The amount of parental investment however, differs between males and females. Trivers, in 1972, came up with the parental investment theory. Central to this is the fact that men and women do not usually invest the same amount in their offspring. Women have to invest more to start with, as women have far less...

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