Psychology 3139A/B Lecture 12: Feb 29 - The Evolutionary Approach_ Sexual Selection

• School: Western University
• Department: Psychology
• Course: Psychology 3139A/B
• Professor: Karen Hussey

Document Summary

Mind is emergent property of biological: pressure, selection. When we are considering this question about whether mind has only. Implicit biological differences between the sexes one thing to think about, we are typically looking at sex differences. Our brain is three times the size of a chimp"s brain: human brains weigh on average 3 lb, chimps" brains weigh just under 1 lb, sex differences are also size differences. Females tend to have lighter brains dimorphic species. Eq = csr, where c = e/s2. Chimp eq = 2. 2-2. 5: size of the brain compared to the size of the body, e = brain size, s = body weight. 6 and 2 million years ago, brain sizes increased very slowly across that time span. Corresponds to evolution of homoerectus eventually give rise to homosapiens. Increase in size of the body increases the size of the brain.