The cerebral cortex accounts for approximately what percentage of the brain's total mass?
a. 25%
b. 40%
c. 50%
d. 80%
e. 90%
d
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The ripple effect is most problematic for teachers who rely primarily on ____ power.
a. reward b. referent c. coercive d. expert e. legitimate
The __________ is the brain's biological clock, housed in the hypothalamus.
A. homeostatic drive for sleep B. circadian timing system C. reward center D. central processing unit
Which condition leads to one out of every six deaths in the United States each year, and is also related to stress?
a. cancer c. asthma b. migraine headaches d. coronary heart disease
What is an experimental design for assessing age-related changes in which data are obtained simultaneously from people of differing ages?
a. longitudinal study b. mixed longitudinal study c. cross-sectional study d. correlational study