In order to establish covariation a researcher will compare the behaviors of the treatment and nontreatment groups once the treatment has been administered.
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Q40: When a researcher later obtains a second
Q41: The major threat to the validity of
Q42: Two researchers do a non-equivalent control group
Q43: When comparing a disadvantaged group that gets
Q44: In order to establish that a treatment
Q46: Temporal precedence is established when you make
Q47: Random assignment works by turning nontreatment variables
Q48: Both randomized experimenter and single-n experimenters compare
Q49: The A-B-A design is useful in single-n
Q50: Like single-n research, quasi-experiments can keep relevant
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