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

تمرين 34

The acquisition of the muscular control necessary for coordinated physical activity, which is called (a) _____ development, follows two general principles. The principle that parts of the body closer to the head develop before parts closer to the feet is the (b) _____ principle. The principle that parts closer to the center of the infant's body develop before parts farther away is the (c) _____ principle. Development of motor skills occurs in a sequential and orderly fashion because of a genetic plan; this process is called (d) _____.