In developed countries, what is the life expectancy of a person who is 65 years old?
a. 5 to 15 additional years
b. 15 to 25 additional years
c. 25 to 35 additional years
d. 35 to 45 additional years
Answer: B
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As a young child, Terrence struggled in school. After being diagnosed with “colorblindness”—meaning that he perceives colors differently—his teachers were able to address his learning difficulties. What can we conclude about Terrence??
a. ?His retina is void of at least one type of rod. b. ?His retina is void of at least two types of rods. c. ?His retina is void of at least one type of cone. d. ?His retina is void of at least two types of cones.
Studies where one group gets an experimental drug and another gets a placebo are called:
a. randomized clinical trials c. quasi-experimental studies b. correlational studies d. longitudinal studies
Researchers studying the effects of caffeine on reaction times had participants drink either a beverage that contained caffeine or a decaffeinated version of the same beverage. In this study, the experimental group is:
a. the participants who drink the decaffeinated beverage b. the participants with the slowest reaction times c. all the people who take part in the study d. the participants who drink the beverage with caffeine
The distribution of IQ scores within the population tends to show a U-shaped curve with most scores falling at both ends and a few scores in the middle
Indicate whether the statement is true or false