The popular belief that a person is either 'left-brained' (logical) or 'right-brained' (creative) is a myth with no scientific basis, as the brain functions as an integrated network.

noli's read

The creator's assertion is very robust and aligns with the current consensus in neuroscience. The study by Nielsen et al. (2013), published in PLOS ONE, effectively analyzed over 1,000 participants using functional MRI without finding evidence of hemispheric dominance linked to personality. It is true that certain functions are lateralized, such as language processing or visuospatial abilities, but this does not mean that one hemisphere dominates the other permanently. The brain relies on constant dynamic connectivity between the two hemispheres, notably via the corpus callosum. The historical origin of the myth, linked to the 'split-brain' work of Roger Sperry, is correctly identified by the creator as an overgeneralization of results obtained from specific patients. No modern scientific evidence supports the idea of a personality based on this dichotomy.

the sources

No named source held this one up — that absence is part of the verdict.