Per day, older adults require __________ younger adults
A) less sleep than
B) as much total sleep as
C) an hour or two more sleep than
D) several hours more sleep than
B
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Of the three survey methods discussed in the text, _____ surveys tend to have the highest response rate and the _____ expense
a. mail; lowest b. personal interview; highest c. telephone; lowest d. personal interview; lowest
Our largest sensory organ is our ________
a. skin b. nose c. ear d. eye
The goal of all test developers is to ____________ cultural bias in their intelligence tests
a. maximize b. eliminate c. minimize d. hide
An experimenter studies the relationship between caffeine and reaction time. She designs her experiment with four groups. Group one receives 100 mg of caffeine each in their cups of coffee; group two receives 200 mg of caffeine each in their cups of coffee; group three receives 300 mg of caffeine each in their cups of coffee; and group four receives no coffee. Twenty minutes later, participants from all the groups are given a reaction-time test. In this experiment, which group is the control group?
A. group two B. group one C. group four D. group three