By age 4,
A) the brain increases from 40 percent of its adult weight to 60 percent.
B) many parts of the cerebral cortex have overproduced synapses.
C) energy consumption of most cortical regions diminishes to adult levels.
D) synaptic pruning slows or ends.
B
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People tend to view their own relationship infidelities as ____
a. a serious source of guilt that damaged their relationship b. a cause of the relationship breaking up c. a consequence of the problems in the relationship d. inconsequential
Brandon is an 8-year-old with normal intelligence. Although he can talk normally, he exhibits pronounced social deficits. He has few social relationships and has little interest in making friends. But he does love video games. He will play them for hours at a time and is quite good at them. When he does talk to others, often all he wants to talk about is video games; he tends to repeat what he
has just said over and over again, even if it is clear that the other person no longer is paying attention. Brandon also follows an extremely rigid schedule. When his schedule is interrupted, he throws tantrums and has a difficult time transitioning to and from activities. By DSM–5 criteria, Brandon is exhibiting a mild form of: A) Asperger's syndrome. B) autism spectrum disorder. C) pervasive developmental disorder. D) childhood schizophrenia.
The average threshold for human hearing is the tick of a watch from __________ under very quiet conditions
a) 20 feet b) 60 feet c) 40 feet d) 80 feet
About _____ percent of older adults in Western nations are parents of living children
A) 50 B) 60 C) 70 D) 80