Emily is told by her physician that her symptoms are caused by the loss of myelin. Her diagnosis is most likely to be:

According to Gisela Labouvie-Vief, adolescents and many young adults are confined to formal operations and do not possess postformal operational thought because they ____

a. are often limited by their egocentrism and concrete-operational thoughts b. often lack the ability to coordinate their sensory modalities with motor skills c. often exaggerate the extent to which logical thinking can be applied to real-life situations d. are often cognitively unaware of how personal fables and an imaginary audience affects egocentric thought

By the end of the first year, babies become increasingly skilled at

A) establishing an internal working model. B) joint attention. C) social smiling. D) labeling their feelings.