Myth: People Have a Dominant “Left Brain” or “Right Brain”

The notion that people are either “left-brained” (analytical) or “right-brained” (creative) is a common myth, often used to explain personality traits or career choices. This myth suggests that brain dominance determines skills and preferences, leading people to believe they should cultivate one side over the other based on these traits. The idea is appealing because it provides a simple explanation for complex behaviors. However, brain research has shown that both hemispheres work together in most cognitive tasks, rather than one being dominant.

Neuroscience research, including studies published in PLOS ONE, reveals that both hemispheres of the brain are active in nearly all tasks. Functional magnetic resonance imaging (fMRI) has shown that while some functions are lateralized, such as language or spatial abilities, the brain works as an integrated whole. Skills and talents come from neural networks spread across both hemispheres, debunking the idea of one-sided dominance. This myth may oversimplify brain function, overlooking the complexity of neural connections and the importance of both hemispheres in every cognitive activity.