Final answer:
According to Erikson's theory of psychosocial development, the actions of Billy's parents may cause him to feel shame and doubt.
Step-by-step explanation:
According to Erikson's theory of psychosocial development, the actions of Billy's parents may cause him to feel shame and doubt. Erikson theorized that during the toddler stage (ages 1-3 years), children develop a sense of autonomy versus shame and doubt. If parents restrict a child's exploration and constantly ridicule their efforts, the child may doubt their abilities and develop a sense of shame.