Handedness: A Behavioral Laterality Manifestation
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TL;DR
Lefthanders, approximately 10% of the population, write with their left hand and scientists are interested in lefthanders because they are particularly interested in things that differ from the norm.
Abstract
Because we are, respectively, a psychologist and a geneticist, though only one of us is a lefthander, we view handedness as an adapted and adaptive behavioral phenotype. Handbook utilizers are referred to relevant chapters herein by Neal, Cherny, Posthuma, Ulbricht, and Neiderhiser covering: Biometrical Models QTL Methodology Multivariate Analysis Genotype–Environment Interaction
