A steadily rising corps of professional investigators, numerous laboratories and institutes, and large sums of money have been devoted to the study of child development, care and management. The modern parent is made to believe that the adult is to a large extent the product of parental treatment that the molding of character and personality is cast, and the designer of those molds is the present parent. The standardized tests have had the same effect appraising behavior development that the height and weight tables had on physical growth. Studies of the development of infants have given use to the proposition that the signals for change are expressed in the behavior of each child; and that these signals were sufficiently homogeneous in their expression to be ascertained by the observant parent. Behavior signals can be useful guides in altering the feeding program of the infant.