Final answer:
When measuring a dynamic characteristic, test-retest reliability should be avoided because it does not accommodate the natural variations expected in these types of measures. Instead, other forms of reliability like inter-rater reliability, Cronbach's alpha, and split-half reliability are more suitable.
Step-by-step explanation:
When measuring a dynamic characteristic, such as mood or stress levels, which can fluctuate over time, one should avoid using test-retest reliability. Test-retest reliability is the measure of consistency of results when the same test is taken by the same individuals at two different points in time. For dynamic characteristics that are expected to change naturally over time, a high test-retest reliability is not desirable as it does not accurately reflect the expected variations.
Other forms of reliability such as inter-rater reliability, which measures the level of agreement among different raters, Cronbach's alpha, which assesses the internal consistency of test items, and split-half reliability, where a test is split into two equal halves and the scores are correlated, are more appropriate for such measures.