You probably grabbed your phone or took a sip of water with your right hand. If you’re like most people (about 9 out of 10), you’re right-handed. Left-handed folks make up around 10%, and truly ...

Are there two or three forms of handedness? Most psychological studies investigating handedness have two different categories: left-handedness and right-handedness. A large-scale meta-analysis ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Why do 90% of humans reach with the same hand? The answer ...