Introduction to Psychology 10th Edition by Rod Plotnik,Haig Kouyoumdjian

Exercise 32

Motor development, which is the acquisition of the muscle control required for coordinated physical activity, follows two general principles. The principle that parts of the body closer to the head develop before those closer to the feet is called the (a) _____ principle. The principle that parts closer to the center of the body develop before those farther away is called the (b) _____ principle.