What are the associations between them?
Paw and hand preferences are of great interest in behavior and psychology because they are an indication that one side of the brain is more active than another. A preference for using the right side of the body (hand or paw) is associated with a more active left side of the brain while a preference for using the left side of the body indicates more activity in the right side of the brain. (Each side of the body is controlled by the opposite side of the brain.)
via Whisker Therapy