17. Review the stages of development and their corresponding tasks., yo should know at what age does an infant stands alone, or say bye bye, kick the ball, recognizes the family faces, play all around etc.
18. Injuries affecting infants
19. You should review at what age does a child becomes interested in his own genitals.
20. Remember that the “sound” is one the reinforce in controlling the child’s behavior, this according to Skinner’s theory