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Altruism and Kinship Theory

Altruism and Kinship Theory. Rachilin , H., & Jones, B., A. (2008). Altruism among relatives and non-relatives , Behavioral Processes, 79(2),  120-123. . Jane Kim Beverly Pascual Ally Salciccia. Video. http://www.youtube.com/watch?v=FeqzOodJ_Hc. Hamilton’s Kin-Selection Theory.

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Altruism and Kinship Theory

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  1. Altruism and Kinship Theory Rachilin, H., & Jones, B., A. (2008). Altruism among relatives and non-relatives, Behavioral Processes, 79(2), 120-123.  Jane Kim Beverly Pascual Ally Salciccia

  2. Video • http://www.youtube.com/watch?v=FeqzOodJ_Hc

  3. Hamilton’s Kin-Selection Theory • Altruism is more likely to occur when the other person is related to altruist. • c < rb • Kin could also be identified in terms of social distance.

  4. Hamilton’s Kin-Selection Theory • Humans sometimes display altruism to non-kin. • Rachlin and Jones predicted that perceived social distance might have an influence on determining altruistic behaviors in humans, rather than solely relying on the genetic based relatedness.

  5. Procedure/Method • 206 participants • List of the 100 people  • Determine amount of money to 'forgo'

  6. Results • Participants were willing to give up more money for those on the closer list (closer to 1) than more distance ones (closer to 100). • “…the closer you feel to someone else, the closer their relation to you is likely to be, and the more altruistic you are likely to be toward them.” • Supported Hamilton's Theory.

  7. Results Con’t

  8. Discussion • While the results of the study did support Hamilton’s Theory, what does this mean for the future? • Since it takes many generations for an evolutionary change to occur, maybe this idea will be relevant more so in the future than in the present time. • In Buss, chapter 8, Buss states that “kinship terms will be used to persuade and influence other people.” • Panhandler • College Fraternities and Sororities

  9. Quiz 1.) (T/F) Research by Rachllin and Jones (2008) suggested humans are more likely to display altruistic behaviors to related relatives. 2.) Research by Rachlin and Jones (2008) supported __________ theory.

  10. Quiz Con’t 3.) Based on the research by Rachlin and Jones (2008), to whom are you more likely to give up your last piece of chocolate?A.) sorority sister B.) favorite professor C.) annoying brother D.) own dog 4.) (T/F) Social distance is not another way to understand kin relationships.

  11. Questions?

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