If there is any correlation between brain size and intelligence? The answer is no, otherwise elephant would be the smartest animal on the planet. However, studies show that brain size normalized on a body mass and brain complexity result in a higher intelligence. Please see infographic made by healthcare volunteer Yoshi Perera who likes to contribute content on a popular medicine and wellness.
Infographic Source: https://www.visitdoctor.ca/article/bigger-brain-smarter
