In Which of the Following Cases Are the Frequency and Circumstance

question 15

Multiple Choice

In which of the following cases are the frequency and circumstance of children's expressions of positive or negative emotions modified by the environment:

• A)when adults respond to a baby's smiles with positive stimulation, the baby's rate of smiling increases
• B)through classical conditioning, a child who gets a shot at the doctor's office comes to fear the doctor
• C)whether they were born prematurely or at the normal age of 40 weeks after conception, all infants begin to smile at 46 weeks post conception
• D)both a and b

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