PSY 0105 Study Guide - Carrying Capacity, Stone Age, Sickle-Cell Disease
Document Summary
We think liars fidget, hesitate, or do not make eye contact. A trait that helps you in certain environments will be bad in others: ex. sickle cell anemia is good when you live in areas prone to malaria. Populations evolve: speed affected by, reproduction rates. Bacteria reproduce more quickly and therefore are able to evolve faster: environmental pressure. Carrying capacity: supportable population of an environment before the ecosystem collapses: when the capacity is less, there is more pressure. If there isn"t enough food or water, organisms can be selected for or against: diversity. The more diverse, the more possible mutations there are. Allows for populations to adapt because some individuals will have this unique benefit. More successful mutations better adapted: principles, the brain is a physical system; it has circuits that generate behavior appropriate to environmental circumstances, circuits were designed to face problems that our ancestors faced during our species" history.
