The corpus callosum is the thick band of nerve fibers that connects the left and right hemispheres of the brain, acting like a superhighway to allow communication between the two sides. Given its role in integrating information, researchers have long speculated that the size and structure of the corpus callosum may be linked to intellectual …
Researchers have long suspected that brain size affects intelligence, with people who have bigger brains tending to have higher IQs. A new set of studies provides compelling evidence that this relationship is likely causal and not just correlational. Key Takeaways: Among siblings, the one with the larger brain size tends to have the higher IQ. …
Researchers have found that more intelligent narcissists are less likely to exhibit rivalry and aggression. This suggests higher intelligence may help mitigate some of the negative interpersonal behaviors associated with narcissism. Key Facts: Narcissism has two main dimensions – admiration and rivalry. Admiration involves self-promotion, while rivalry involves aggression and devaluation of others. These two …
