In addition to response bias, another set of measurement problems associated with behavior rating scales is:

Question

Quizplus · Accepted Answer

Error variance refers to the extent of variability in scores that is not related to the construct being measured, but rather to extraneous factors such as temporary mood or situational factors. This can lead to decreased reliability and validity of the scale. Time variance refers to how behavior changes over time and can affect the consistency of the ratings. Social variance refers to how the behavior being rated is influenced by social expectations, norms, and relationships, and can affect the accuracy of the ratings. While all of these are potential measurement problems, error variance is the most specifically related to the scale itself and thus the most directly applicable answer.

In Addition to Response Bias, Another Set of Measurement Problems