Which of the following statements about emerging adulthood is true?
A)It is a period of development that spans from age 15 to 21 years.
B)It is a period of development unique to underdeveloped nations.
C)Although emerging adults have moved beyond adolescence, they have not yet fully
assumed adult roles.
D)It is a period of development mostly limited to young people in developing nations.
In a face perception study involving both human and monkey pairs, 9-month-old infants
A)could discriminate the individual faces of both humans and monkeys.
B)did not show a novelty preference when viewing the monkey pair.
C)showed a novelty preference only when viewing the monkey pair.
D)could not yet discriminate the individual faces of humans or monkeys.
Some researchers think that autism is due to
A)impairment in an innate, core brain function that leaves the child unable to detect others’
mental states.
B)mercury commonly found in recommended childhood vaccinations.
C)mutations in the child’s genetic code, usually inherited through the father’s genes.
D)a diet during the prenatal period and the first year that was lacking in essential vitamins
and proteins.