Assume that you have developed a study technique that you believe will result in students scoring higher on research methods exams. You test your study technique with the design diagramed below. R=random assignment O=observation X=stimulus R O1 X O2 R O3 O4 Using the diagramed design, what predictions are correct?
a. O2 should be greater than O1
b. The (O2-O1) change should be greater than the
(O4-O3) change.
c. O4 must equal O3
d. All of these choices are appropriate predictions
e. O2 should be greater than O1 and the (O2-O1) change should be greater than the (O4-O3) change
e
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