Not sure about justification, but there's evidence that their brains were focused more on vision and movement. https://www.seeker.com/neanderthals-lacked-socia

Not sure about justification, but there's evidence that their brains were focused more on vision and movement. https://www.seeker.com/neanderthals-lacked-social-skills-1767294231.html https://www.seeker.com/neanderthals-lacked-social-skills-176... Although, it appears that Neanderthals were bigger, but shorter than modern humans. I thought they were taller as well, but apparently that's not true