People left, unlike the right-brain-left-brain research because people left work quite right. For example, driving a car, playing music, playing the sport.
Unlike left-handed or left-brain, right-brain research for left-handed people can work like a right-handed person. For example, the drive to play the sport.
A left-handed person not like brain research left or right brain because left-handed can work as a right-handed person, for example, driving cars. Music Sports