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PSYC 100
Ingrid Johnsrude

WEEK 15 LECTURE NOTES: LIFESPAN DEVELOPMENT, DURING GESTATION Childhood development: a) is the same as all other stages b)represents a period of slow growth c) involves shaping a "blank slate" d) critical periods of development DEVELOPMENT: systematic changes in behaviours and abilities that occur b/w the moment of conception and death -change: continual and cumulative -->changes build on previous stages -effects of one age have consequences @ other ages Early Stages -most rapid; crucial periods of development in infants and children Teratogens are: a) like metachlorians b) are toxins c) another word for alcohol d) do not affect development Teratogens anything that has an adverse effect on development -effects range from very mild to death -many only a problem if exposure occurs during sensitive period Lifespan Development: Aging -scientists have isolated a gene sequence that appears to determine how fast our bodies age -difference b/w: chronological age (time alive) and biological age (genetic makeup and lifestyle factors) -one or two copies of the genetic sequence probably make less of the enzyme, called telomerase, when they are growing in the womb -born w/ shorter telomeres, and so are prone to aging more quickly -each time a cell divides, the telomeres get shorter -too short: the cell no longer can divide and becomes inactive -->associated w/ aging, cancer, and increased risk of death Factors in aging: a) telomere shortening b) chronological age (time) c) sugars d) all of the above -telomere shortening -chronological age -oxidative stress (oxidants damage DNA, proteins, and lipids) -glycation (glc bind to and inhibits DNA, proteins, and lipids) DEMENTIA normal aging: -slight decreases in speed of processing, memory, and other cognitive abilities (cognitive decline); general cognitive decline mild cognitive impairment: -isolated impairments, usually in memory -specifically associated w/ memory impairments dementia: -severe impairments in 2+ cognitive domains, as well as f'nl decline; very serious decline Diagnostic and Statistical Manual of Disorders (DSM-IV) criteria for Dementia: 1) memory impairment (impaired ability to learn new info or recall pr
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