Which of the following can be identified by maternal blood screening?
a. down syndrom
b. spina bifida
c. babys sex
d. infertility.
Ans: a. down syndrom
b. spina bifida
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People deprived of rapid eye movement (REM) sleep:
A) experience paradoxical sleep. B) learn more slowly. C) have fewer chances of experiencing REM rebound. D) spend less time in REM sleep during subsequent sleep periods.
Which of the following statements is true regarding children's ability to learn words?
A. A toddler may increase his or her vocabulary from 50 words to over 400 words within a couple of weeks. B. Children tend to start out using overextension and then progress to using underextension more often. C. Word acquisition tends to happen in sudden spurts for most children. D. Children's vocabulary spurt occurs around the age of 4 when they are typically in a formal education setting.
The reason that hippocampus damage can interfere with forming new memories and yet not alter childhood memories is ______.
A. long-term memories are stronger and more difficult to disrupt B. these types of memories are related to two different neurotransmitters within the hippocampus C. these types of memories are located in different areas of the brain D. none of these
How are proximity to others and the establishment of friendships related?
A. not related B. inversely correlated C. negatively correlated D. positively correlated