After first having read about Freud's theory in her textbook, Joyce exclaimed, "I don't believe any of this is really true." Joyce is disputing the theory's

What is a common development that lets researchers know that a child has developed self

awareness by about 18 months of age? a. They smile back when the caregiver smiles at them b. They look in a mirror for a long time c. They refer to themselves by their first name d. They develop their first friendships

Imagining how another person would view the problem and asking "silly" or playful questions are ways to

a. restate the problem in different and novel ways. b. create mental sets that must be avoided. c. narrowly define a problem so it can be clearly understood. d. prevent incubation of the problem.