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Left-handedness has been shown to be a possible marker for various psychological and physical abnormalities. This book presents evidence by a number of research

Nine out of every ten human beings are naturally right-handed. Those who were not right-handed were feared, shunned, or forcibly retrained in many periods and c

"Manual asymmetries" refers to differences in performance capabilities of the two hands. Humans may be the only species that show a consistent preference for th

Does being left-handed make a person different in any way that matters? Since the late Stone Age, approximately 10 percent of humans have been left-handed, yet

Developmental Instability: Its Origins and Evolutionary Implications is a collection of papers and transcribed discussions from a conference held in Tempe, Ariz