12.Evolutionary Psychology Introduction

12.Evolutionary Psychology Introduction - Evolutionary...

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Evolutionary Psychology and the Origins of Cognition Andrew Schork
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Cognitive Science’s View of the mind A sensory information processing organ Input (Sensory Information) Processing (Cognitive Function) Output (Behavior) Where does the processing come from? How does it know how to
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?
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Nature vs Nurture Evolutionary Psychology The brain is a computer that comes preloaded with “software” Evolutionary pressures have shaped this “software” over Blank Slate The brain is a general purpose learning machine Culture and experience shape cognitive processes during our lifetime
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Evolution: More than “Survival of the Fittest”
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Evolution was around long before Darwin Darwin proposed a mechanism when he published “On the Origin of Species” in 1859 Three mechanisms: Natural Selection Sexual Selection Kin Selection Evolution
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Evolution by Natural Selection Principles: Every individual has the potential to reproduce Not every individual reproduces Those best suited to their environment reproduce the most The traits that make them better suited are passed on Evolution is about survival only so you can reproduce
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Darwin’s Finches
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Peppered Moths
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Evolution is about reproduction but… Reproduction is complicated Requires two individuals (sexual reproduction) Presents problems: Finding quality partners Finding partners who are able to mate Mature enough, Fertile enough, etc. Convincing them to mate with you
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Evolution by Sexual Selection Individuals who are better at “playing the game” of reproduction reproduce more The game is different for different sexes This leads to sex differentiation Comes in two flavors: Intersexual Selection - shapes traits that one sex generally prefers in the other sex Intrasexual Selection - competition among members of the same sex for mating access to the opposite sex
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Intersexual Selection Intrasexual Selection
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What is Reproduction really?
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12.Evolutionary Psychology Introduction - Evolutionary...

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