Non-right-handedness is more common across multiple mental health conditions

Non-right-handedness is more common across multiple mental health conditions

People with mental or neurodevelopmental disorders are more likely to show non-right-handedness than those without these conditions, according to a second-order meta-analysis published in Psychological Bulletin. Handedness—the tendency to prefer one hand over the other—is rooted in our biology and brain organization. Most people are right-handed, but left- and mixed-handed individuals comprise a significant minority. Handedness is shaped by both…