PSYC325 Lecture Notes - Lecture 4: Twin Study, Mental Chronometry, Habituation
21 Feb 2018
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Distribution of iq scores: wechsler is iq in general and has a bell-shaped curve, 100 is average. Longitudinal stability for groups but fluctuations for individuals: measures iq, then re-measures years later, analyzes correlation, the closer in time the 2 tests, the higher the correlation (see table. Bou(cid:272)hard"s re(cid:448)ie(cid:449) of adoptio(cid:374) a(cid:374)d t(cid:449)i(cid:374) studies: several designs that can be used, how they relate to their adoptive parents vs their biological parents, etc, see table 2. 4 on slides, genetic influence increases with age. Bou(cid:272)hard"s re(cid:448)ie(cid:449) of adoptio(cid:374) a(cid:374)d t(cid:449)i(cid:374) studies: see table 2. 4 on slides reared apart shows the difference. Also really want to be parents so they try really hard: can provide children with a more enriched environment, see table on slide 16. Sa(cid:373)eroff"s study of ho(cid:373)e risk fa(cid:272)tors: found 10 factors that seem to predict lower iq factors (see table 9. 6, most have to do with how much time and attention children receive from their parents, cumulative risk.
