In human biology, handedness is an individual's preferential use of one hand, known as the dominant hand, due to it being stronger, faster or more dextrous. The other hand, comparatively often the weaker, less dextrous or simply less subjectively …

Genetic and environmental factors play a role in determining whether you are right handed or left handed. Learn more about how genetics impacts handedness.

Scientists have long known that handedness is partly shaped by genes. But it wasn’t until 2019 that they identified differences in parts of the DNA of left- and right-handers.

2019年7月16日 · Being ambidextrous usually means that you can use both hands equally well. Being mix-handed means that you prefer different hands for different tasks. Very few people are either ambidextrous or mix-handed: most people have a preference for one hand.

Handedness is the preference for using either the left or the right side of the body for certain things. People are described as left-handed or right-handed when they prefer to write with their left or their right hand.

2004年6月21日 · Clare Porac, a professor of psychology at Pennsylvania State University who studies handedness, explains. Researchers who study human hand preference agree that the side of the preferred hand...

Perhaps one of the first handedness studies to use a major cohort study, handedness is now available in a range of large epidemiological and social studies and such studies have clarified many aspects of handedness.

In order to untangle causality, some research employs a 'forced handedness' group. Left-handers who were forced during childhood to use their right hand showed a larger surface area of the central sulcus in their left hemisphere, which is associated with right-handedness.

While a definition of handedness seems trivial at first glance, the term “handedness” actually has been used to describe a number of surprisingly different concepts, rendering clarification necessary.

Handedness, a tendency to use one hand rather than the other to perform most activities; it is the usual practice to classify persons as right-handed, left-handed, or ambidextrous. See Handedness | physiology | Britannica