An experiment is said to be __________ when neither researchers nor participants are aware of who is in the experimental or control group
A) single-blind
B) unfalsifiable
C) a placebo
D) double-blind
Answer: D
Rationale: In a double-blind study, neither the participant nor the experimenter knows the exact treatment for any individual.
Psychology
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The most effective cue in the source of high-frequency sounds is
a. relative loudness. b. differences in arrival time (of the sound to each ear). c. harmonics. d. sound texture. e. timbre.
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Individuals who are socially isolated are at lesser risk for health problems than those that are socially engaged
Indicate whether the statement is true or false.
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