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21.Doree is a baby who explores by crawling and pulling up on objects. When she finds something new, she tries to place it in her mouth. According to Piaget’s Cognitive-Developmental stages, Doree is in which stage?
22.Skinner believed that language begins with babbling and that infants accidentally make sounds that are similar to words. When the parents hear these sounds, they reinforce the babbling with praise. If the parents only reinforce grammatical utterances, proper grammar is increased. Which theory of language development does this describe?
24.Jim is 15 months old. He often seems dazed, confused or unhappy. His behavior is often contradictory, for example, walking towards his mother while looking away. Which type of attachment does this describe?
25.Carl is 80 years old. He plays bingo on Tuesday mornings, plays poker with his friend occasionally, and visits his daughter and her family on Sunday evenings. What component of successful aging does this describe?