PSYC 3206 Lecture Notes - Lecture 14: Explicit Memory, Implicit Memory, Dysphoria
Document Summary
There are more older people in developed countries than in developing countries (think ecology) Longevity: the number of years a person can expect to live. Average life expectancy: age at which half of people born in a particular year will have died. Useful life expectancy: number of years a person is free from debilitating chronic disease and impairment. Maximum life expectancy: the oldest age to which any person lives biological theories of aging. Programmed theories: a biological clock in which cells start to self-destruct. Wear and tear theory: suggests the body (like a machine) gradually deteriorates and nally wears out. Cellular theories: focuses on processes that occur within individual cells. Accumulation of free radicals over time: chemicals produced during normal cell metabolism and bond easily to other substances and cause cell damage. Cross linking: the random interaction of some proteins with certain body tissues. normally elastic tissue becomes stiffer. Telomeres: tips of chromosomes that shorten and break with age driving.
