Left-Brain vs Right-Brain Learners

The widespread notion that individuals are either left-brain logical or right-brain creative thinkers was demolished by a 2013 University of Utah fMRI study analyzing 1,011 brains: no participant showed meaningful hemispheric dominance. Despite this, 70% of teachers still encounter the idea in training manuals, and it influences lesson planning more than #3’s class-size myth in terms of instructional time diverted—teachers lose 8 hours per year tailoring false categories. The myth’s persistence costs districts $200,000 annually in mismatched materials, yet it ranks below #1 because it causes less curricular waste.