Chapter12 - “Social Status” • Society- group of...

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Unformatted text preview: “Social Status” • Society- group of individuals of the same species organized in a cooperative manner. • Sociobiology- theory that states that social behavior is the result of evolutionary forces. • Society is structured by the Ftness success that “social genes” confer individuals. • Animal societies come in a wide range of shapes, i.e., structures. Chapter 12: Kin Selection & Social Behavior Social Structures • Colonial - organisms live together and share some resources. • Quasisocial - the individuals cooperate in brood care, but no true generation overlap. • Semisocial - there is generational overlap and taking care of the young. Also, some division of labor • Eusocial - reproductive division of labor. Sociobiology • Field that relates the social behaviors of a species to its evolutionary history • Sociobiology takes the perspective that – we are driven by drives that come from our genes’ sel¡sh need to propagate. – we have genetic predispositions to behave in certain ways because our genes are driven to reproduce themselves. Social Status & The Sexy Son Hypothesis Sociobiology • There are genetic predispositions for certain social behavioral patterns. • The behavior of helping others, specially offspring, is strongly selected for. • Human social behavior is the result of evolutionary processes. • Many other “human” behaviors are also predisposed by evolutionary forces. Social Interactions and Fitness • Mutualism (Cooperation)…ftness gains ¡or both participants • Altruism …Individual instigating the action pays a ftness cost and the receiver benefts • Selfshness …The actor gains and the recipient loses • Spite …ftness losses ¡or both participants….never witnessed in nature Why spite has not evolved? • Loss for the actor and recipient would be severely selected against!...
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This note was uploaded on 04/17/2008 for the course BME XXX taught by Professor Barnett during the Spring '08 term at Saint Louis.

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Chapter12 - “Social Status” • Society- group of...

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