When a teenager loses his phone privileges or is "grounded," the parent is using

A team of researchers has decided to employ the high-risk research design in a longitudinal study of adolescent alcohol use. What will these researchers have to do to conduct such a study?

a. put their subjects in risky situations b. select subjects based on the presence of specific risk factors c. take the risk of investigating an unlikely cause d. assess the risky behaviors displayed by the subjects

According to the facial feedback hypothesis, when Noah complies with instructions to smile and look happy, it is most likely that

A) he will begin to feel annoyed. B) he will begin to feel angry. C) his positive feelings will increase. D) his reaction will depend on his age.