Respond to these peer comments with feedback such as thoughts questioning concerns 1.The difference between these two are that individualists are less focused on groups and more o
Biological Correlates and Intelligence(pages 319-320 in the fifth version or 336-337 in the sixth edition)
In terms of biological correlates of intelligence, research has demonstrated that when engaging in problem-solving and other cognitive tasks, those with high IQ have _____ activity in the brain compared to those with lower IQ.
What are some specific variations in the brain that are correlated with IQ (see text)?
As you see explained in this video, the axons of neurons are wrapped in myelin sheath. This sheath is comprised of glial cells and facilitates communication between neurons. What may be interfering with myelination in the brain?
Besides neurons, what other type of cell may be key to the way our brains function?
Heredity Influence on Intelligence(pages 331-333 in the 5th edition OR pages 347-349 in the 6th edition)
Robert Plomin is interviewed in this video and his research is also reviewed in the text. What are the two types of twins that Dr. Plomin studies to try to piece apart how much a person’s intelligence is influenced by genes and how much by environmental factors?
Roughly how many genes are estimated to influence intelligence?
Based on twin studies, what is (more or less) the consensus as to the percentage of variability in human intelligence is due to genetic factors? What is this ratio called?
Cultural Differences in IQ Scores(pages 335-336 OR pages 351-354 in 6th edition)
William Shockley, Arthur Jensen and Canadian researcher Philip Rushton all made the claim that intelligence varied by race and was largely due to genetic factors. However, as your text points out, since then we’ve seen the disparity between blacks and whites in the U.S. shrink by 4-7 points, implicating ________factors.
Jensen et al’s assertions have been accused by critics of being based on faulty logic, since even when the differences observed within a population can be largely attributed to genetics, the differences between groups can be entirely created by environmental factors (see corn field analogy in text). There is no doubt that black and white Americans do not share similar environments, as evidenced by the much higher rate of poverty among black compared to white Americans (compounded by what sociologists call the ‘double burden’ of poverty for black Americans). Bolstering the corn field analogy is the _____ effect, which shows that generations vary with respect to IQ – and this variation must be attributed to environmental factors (since the genetics have not changed in such a short period of time).
What are several factors that no doubt contribute to the finding that black Americans don’t score as highly on IQ tests as white Americans? (see text pages 336-337 OR pages 352-354 in the 6th edition).
(Is it a surprise to you that tests designed by relatively affluent white people do, in fact, favour white people?)
What does intelligence (as measured by these conventional IQ tests) predict? (see text)
What do conventional IQ tests NOT predict, or at least not very well? This casts some doubt on what form of validity?
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