The study of shapes of the body and their changes in rhythms of shape-flow contributes to our understanding of feeling tones that emerge from kinesthetic sensations in infancy. Growing and shrinking of body shape serve approach and withdrawal behavior. Regulation of shape-flow through physiological and psychological mechanisms contributes to the formation of images of self and object. In the state of primary narcissism the

prevailing tendency is toward shrinking of body shape or turning inward. As development progresses there is an increasing tendency toward growing of body shape and thus turning to the environment.