Answered

What do twin studies generally find about intelligence?


AThat environment is irrelevant to intelligence
BThat genes contribute meaningfully to intelligence, even across different environments
CThat identical twins raised apart have more IQ differences than fraternal twins raised together
DThat schooling explains nearly all IQ variance

Verified Answer :

Final answer:

Twin studies find that genetics significantly influence intelligence, as evidenced by identical twins showing similar IQ scores regardless of their upbringing. They show that identical twins raised apart have less IQ differences compared to fraternal twins raised together. Environmentally based factors do exist but do not explain all the variance in intelligence.


Explanation:

Twin Studies and Intelligence


Twin studies are a crucial method in understanding the genetic and environmental influences on intelligence. Generally, the findings from these studies can be summarized as follows:



  1. Genes contribute meaningfully to intelligence, even across different environments. Research has shown that identical twins, who share nearly 100% of their DNA, tend to have similar IQ scores regardless of whether they were raised in the same household or apart.

  2. Identical twins raised apart exhibit less IQ differences than fraternal twins raised together. This suggests that genetic factors play a more significant role than environmental factors.

  3. However, it is important to acknowledge that environment does play a role, but not to the extent that schooling explains nearly all IQ variance. Studies indicate that while educational opportunities and parental support can influence IQ, they do not account for all variance.


In conclusion, twin studies significantly support the idea that genetics have a major influence on intelligence, but they also highlight the importance of environmental factors.


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https://brainly.com/question/50356541


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