Find the best solutions to your questions at Westonci.ca, the premier Q&A platform with a community of knowledgeable experts. Join our Q&A platform to get precise answers from experts in diverse fields and enhance your understanding. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields 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.