PSY 216 Lecture Notes - Lecture 3: Rheumatoid Arthritis, Humoral Immunity, Neutrophil
Document Summary
Life expectancy can be examined from the perspective of the basic developmental forces because how long we live depends on complex interactions between biological, psychological, socioeconomic, and life-cycle forces. Long-life genes: play a major role in governing how long we are likely to live. Environmental factors such as disease and toxic chemicals modify our genetic heritage and shorten our lifetime. Environmental factors such as access to high-quality medical care can sometimes offset genetic defects that would have caused early death, thereby increasing longevity, Longevity: the number of years one lives as jointly determined by genetic and environmental factors. Two different types of longevity: average life expectancy: refers to the age at which a particular age cohort can expect to live. Dependent life expectancy: simply living a long time. It is the difference between adding years to life and adding life to years.
