PSY 161 Lecture 9: Biology 2

• School: University of Rochester
• Department: Psychology
• Course: PSY 161
• Professor: Professor Elliot

Document Summary

Within each species there are variations in introversion and extroversion and neuroticism (there are introverted and extroverted octopi) (octopi, yellow bellied marmots, small eared bush babies, rhesus monkeys, hooded rats) Rudimentary (determining nature vs nurture; genes or environment) but complex. Basic task: separate determinants of behavior into genes and environment. Animal behavioral psychologists use this a lot. Took mice and mated them with each other. One set from population of mice that were very active (running around a lot), chose the two most active and mated them. The two least active, he took those two and mated them. Continued to mate the offspring of those two groups. Took active group; with ex of 10 mice in that litter, took the most active and then mated them again, created 30 generations. So there are active ones and passive now. Active mice were 2x as active as the passive mice. 30 generations, offspring were 30x more active.