Across animal species, what determines the correlation between brain size and intelligence of the species?

Question

Quizplus · Accepted Answer

Brain size relative to body size is the best determinant of the correlation between brain size and intelligence of the species. This is because larger species require larger brains to perform basic functions, so absolute brain size alone is not a reliable indicator of intelligence. Additionally, comparing brain weight to closely related species may not accurately reflect differences in cognitive abilities between species.

Across Animal Species, What Determines the Correlation Between Brain Size