If the average test score of the experimental group is higher than that of the control group, it can be concluded that . . . . . . . .
A. The music improves learning group
B. The music does not improve learning group
C. The music has no effect on learning group
D. None of these
Answer: Option A
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B. Guidance and counselling
C. Psychotherapies
D. All of the above
A. Placebo effect
B. Environmental effect
C. Experimenter effect
D. None of these
A. 1, 2 and 3
B. 1 and 2
C. 2 and 3
D. Only 1
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B. Organismic variables
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