Answer ONE of these in 1 – 3 sentences. 1. What is object p…

 Answer ONE of these in 1 – 3 sentences. 1. What is object permanence? For what reason is it considered a key milestone in cognitive development? 2. What is the main idea of Erikson’s Psychosocial theory of development? Name and describe one of the stages he includes in this theory. 3. What are two findings from the studies of children in orphanages in the 1900s that demonstrate the effects of social deprivation?