A technique for studying brain structure that use radio frequency waves is known as
a. MRI.
b. CT scan.
c. radio scan.
d. GSR.
Answer: a: MRI.
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Which scenario best illustrates the concept of migration?
a. Twelve thousand years ago Native Americans traversed the Bering Strait to settle in the Americas, causing different genetic traits to be favored over others. b. The genetic mutation that causes sickle cell anemia also increases resistance to malaria, increasing the frequency of the diseased allele in the general population. c. The prevalence of depression is greater in populations where the serotonin transporter gene translocated to position q21 along chromosome 17. d. There is a higher than average rate of Ellis-van Creveld syndrome in the Amish community because the diseased allele was introduced by some original Amish settlers.
Although the interquartile range is not affected by extreme scores as much as the range, both range measures are fairly imprecise measures of ______.
A. standard deviation B. variability C. skewed D. range
When Ki-Jana asks his parents if he can buy a car, his parents say no, but sit down and explain to him the reasoning behind their decision. His parents express affection toward him and tell him that they may consider the matter at some later time. Which parenting style best describes Ki-Jana's parents?
a. Authoritarian b. Permissive c. Uninvolved d. Authoritative
Who is at the greatest risk of a heart attack?
a. Forrest, who has high levels of LDLs and low levels of HDLs b. Tucker, who has low level of LDLs and high levels of HDLs c. Sawyer, who has low levels of both LDLs and HDLs d. Gump, who has high levels of both LDLs and HDLs