______ means that the active intervention, not other factors, caused the observed changes in the outcome.
A) The placebo effect
B) Internal validity
C) External validity
D) Statistical significance
Correct Answer:
Verified
Q19: Lu and colleagues (2017) evaluated the benefits
Q20: Sometimes researchers cannot manipulate some of the
Q21: An experiment is being conducted to determine
Q22: _ is the intervening process (variable) through
Q23: In a study of male and female
Q25: Hoyt and colleagues (2014) randomly assigned participants
Q26: In a 2017 article in The Atlantic,
Q27: A researcher would be most likely to
Q28: _ are used to predict the likelihood
Q29: The Nurses' Health Study and the Women's
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