PSYC21 - Midterm Review
*Know different studies and their details covered in lecture (Possible Short Answer Q)
- what was measured, what did the study show...
- understand how it applies to the 3 phases of separation
Dunbar! – Know his key arguments (what did he contribute in the paper) – Long Answer Q
Why is the brain so big? – larger neocortex
Implications on social brain and the differences across species
Contradictory aspects - reconciliations?
Primates – Big brains
- generate more energy than needed to solve problems for survival, brain larger (extra energy) than it
needs to be, why?
Big brain due to unique life history, therefore cause of longer maturation periods
Dunbar, disagrees – doesn’t explain the advantage of a large brain
Another alternative reason provided was due to demands of foraging activities (mental
- Squirrels and bigger mammals have similar foraging activities, but doesn’t explain the
differences in brain size – therefore not really cause of ecological reasons
Dunbar’s Idea: Mach.. Intelligence Hypothesis/SBH – how the complexity of the social environment
caused us to develop larger brains
Pairbonding (Look at figure in article)
- larger groups = larger brain size
- Why? – Reasons in lecture slides (Ex: Freq. of get together, tactile deception..)
- Don’t apply to other species
Primates vs. Other species
- dissociation b/w those w/pairbonds and those who don’t
Pairbonding (Monogamy) – unusual larger brains – due to social complexity and hard work
(energy) to consider what the other partner wants – cognitively taxing!
- in the Figure, what does it tell us about birds?
Qualitative relationship – based on quality of the relationship