Are You a Southpaw? Raise Your Left Hand! MeasurementDevices in Industry and Science Posted on January 11, 2018 by editor2January 11, 2018 By Russell Lee What determines whether you are right handed or left handed? Scientists used to think it was your brain. But new research suggests otherwise. Only 10 percent of the population …read more Via:: Are You a Southpaw? Raise Your Left Hand!