Discussion
The above data indicate that the new inventory has
Answer: D
The data indicate unsatisfactory concurrent validity.
Concurrent validity is shown by the correlation of the new inventory with an established measure of the same trait taken at the same time. The correlation found, 0.20, is low, which suggests the new inventory is not measuring what the established one does. Parallel form reliability needs two equivalent forms, which the passage does not give, so options A and B are not answerable from it, and a correlation of 0.20 is too low to call satisfactory.
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