Researcher 1 studies IQ in the indigenous people of an isolated island with a population of approximately 3000 people. Researcher 2 studies IQ in North America, looking at millions of people who come from a broad range of social and economic backgrounds.  Researcher 1 concludes that 70% of the variation in IQ is genetic, whereas Researcher 2 concludes than only 40% of the variation in IQ is genetic.  What is the most likely explanation for these different estimates of the heritability of IQ?   Group of answer choices The conclusions of Researcher 2 must be flawed, because environment always has a smaller effect on IQ than genetics Widespread use of technology in North America has increased abstract reasoning ability There is less environmental variation among the people being studied by Researcher 1, so there is less opportunity for the environment to cause differences among people IQ tests measure only a subset of the abilities that constitute the concept of intelligence

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Intelligence

Intelligence refers to the intellectual functioning that compares a person's intelligence quotient (IQ) with other people of the same age. In other words, it is the ability to understand circumstances or situations and arrive at appropriate solutions. Both animals and plants exhibit intelligence.