An instrumentation effect occurs when:
A) the instrument employed for the pretest has an effect that shows up on the posttest.
B) the measurement instrument is changed from the pretest to the posttest.
C) there is a change on the dependent variable from the pretest score to the posttest score.
D) there is statistical regression to the mean.

Question

An instrumentation effect occurs when:​
A) ​the instrument employed for the pretest has an effect that shows up on the posttest.
B) ​the measurement instrument is changed from the pretest to the posttest.
C) ​there is a change on the dependent variable from the pretest score to the posttest score.
D) ​there is statistical regression to the mean.

Quizplus · Accepted Answer

The Answer of An instrumentation effect occurs when:​
A) ​the instrument employed for the pretest has an effect that shows up on the posttest.
B) ​the measurement instrument is changed from the pretest to the posttest.
C) ​there is a change on the dependent variable from the pretest score to the posttest score.
D) ​there is statistical regression to the mean.

An Instrumentation Effect Occurs When:​

An Instrumentation Effect Occurs When: