PET-scans show that activity in the frontal cortex
A)of 5-day-old babies is like that of adults.
B)approaches adult levels by 7 or 8 months after birth.
C)reaches adult levels by adolescence.
D)does not reach adult levels until adulthood.

Question

Quizplus · Accepted Answer

Studies have shown that activity in the frontal cortex reaches adult levels by 7 or 8 months after birth. Option A is incorrect because while there is some activity present in the frontal cortex of newborns, it is still significantly lower than that of adults. Option C is incorrect because while there is continued development and fine-tuning of the frontal cortex during adolescence, it has already reached adult levels by this stage. Option D is incorrect because adult levels of activity in the frontal cortex are reached earlier than adulthood.

PET-Scans Show That Activity in the Frontal Cortex