Certified Advanced Alcohol and Drug Counselor (CAADC) Practice Exam

A Pearson r correlation of 0.96 suggests what about the two forms of a test instrument?

1. Low alternative form reliability

2. High alternative form validity

3. High alternative form reliability

4. Low alternative form validity

The correct answer is: High alternative form reliability

A Pearson r correlation of 0.96 indicates a very strong positive relationship between the two forms of a test instrument. This high correlation suggests that the two forms of the test are measuring the same construct consistently. In the context of test reliability, alternative form reliability refers to the degree to which two different versions of a test yield similar results. A high Pearson r value, such as 0.96, signifies that the scores from the two forms are closely aligned, which means that they are reliable and that one form can be expected to produce results very similar to the other. This strong correlation does not inherently address validity, which refers to how well a tool measures what it is intended to measure, rather than the consistency of the results across different versions of the instrument. Hence, while high alternative form reliability is clearly indicated by the correlation figure, considerations of validity would require different metrics to assess. In summary, a Pearson r correlation of 0.96 reflects that the two forms of the test are highly consistent in terms of results, thereby demonstrating high alternative form reliability.