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Lecture 14

Psychology 1000 Lecture Notes - Lecture 13: Parental Investment, PromiscuityPremium

Course Code
PSYCH 1000
Laura Lyn Fazakas Dehoog

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Psychology 1000 Lecture 13
Professor Fazakas-Dehoog Section: Psychology 1000 002
Chapter 3 Continued
Studying Behavior
What are the environmental conditions needed for the full development of this
What internal mechanisms are involved in producing this behavior?
What consequences does this behavior have in the individual’s daily life?
In the course of evolution, why would the genes that make this behavior possible
have been favored by natural selection?
Cross-Species Comparisons
Homologies: similarities due to common ancestry
Useful for studying underlying mechanisms and for tracing the
evolutionary course of species-typical behaviors, exemplified by research
on the greeting smile and happy smile in humans
Analogies: similarities due to convergent evolution (independent evolution of
similar traits)
Useful for inferring distal functions
Evolutionary Analyses of Mating Patterns
Mating is what drives evolution
Four classes of mating arrangements
Monogamy male and female
- Very common especially in birds.
Polygyny one male and many females
- Bull seals
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