The attention span of the average fourth-grader is much longer than that of the average first grader. Which of the following biological changes is primarily responsible for this?
A) Increased growth of the corpus callosum
B) Continued myelination of the optic neurons and their connections to the occipital lobe
C) Continued myelination of the frontal lobes and reticular formation and the nerves that link the two
D) Rapid growth of the reticular formation
C
Psychology
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An individual's __________ refers to what that person looks like as a consequence of their genetic code and their environment
a) phenotype b) genotype c) sex chromosomes d) polygenic inheritance
Psychology
Boys tend to be ______ than girls
a. better socialized c. more active b. more conforming d. more talkative
Psychology