Looking for reliable answers? Westonci.ca is the ultimate Q&A platform where experts share their knowledge on various topics. Ask your questions and receive precise answers from experienced professionals across different disciplines. Get quick and reliable solutions to your questions from a community of experienced experts on our platform.

Identify the true statements about test-retest reliability as a method of calculating the reliability of measures.
a. For very short time intervals, most attributes are quite unstable, and a low test-retest reliability should be expected.
b. It is generally recommended that test-retest reliability be at least 0.90 for a measure to have an acceptable degree of reliability.
c. Higher test-retest reliabilities are indicative of greater measurement stability.
d. It involves calculating correlation based on total test scores or separate correlations for each item.