The correlation between brain size and intelligence is 33, meaning that about 11% of the difference in intelligence between individuals is related to brain size
The intrinsic and extrinsic characteristics of the brain, which control its functions, are related to an animal's intelligence.
It would seem obvious that animals have different levels of intelligence and that, at least from our own skewed perspective, human intelligence is significantly higher than that of other animals. Comparative ecologists, evolutionary psychologists, and neuroscientists are not the only people interested in learning about animal intelligence.
A correlation value between 0.3 and 0.4 out of 1.0, or a weak correlation, exists between total brain volume and intelligence in healthy volunteers. Thus, between 9 and 16 percent of the overall variation in general intelligence is explained by brain size. 1
Hence option C is correct.
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See full question below
The correlation between brain size and intelligence is ______, meaning that about ______ of the difference in intelligence between individuals is related to brain size.
A. .50; 33%
B. .25; 20%
C. .33; 11%
D. .24; 6%
