Multiple Choice
A researcher is evaluating the changes in performance that occur during a 6-week training program.Participants are observed at the beginning and at the end of the program and the researcher rates each individual's level of performance.If the researcher's standards for rating performance change from the first observation to the last,then the internal validity of the study is threatened by
A) history.
B) instrumentation.
C) maturation.
D) statistical regression.
Correct Answer:
Verified
Correct Answer:
Verified
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