In the Assessment and Testing core area, CACREP highlights the importance of understanding test limitations, response biases, and sources of error in measurement—especially when using self-report instruments.
A major concern with self-report is social desirability responding, where individuals intentionally or unintentionally answer in ways that:
Present themselves in a more favorable light
Conform to perceived expectations or norms
Minimize or hide behaviors or attitudes that might be viewed negatively
This bias can seriously affect the accuracy of self-report measures when they are used as criterion measures (standards against which other instruments are validated).
Homogeneity of variance (A) is a statistical assumption, not a specific self-report response bias.
Halo effect (B) is more commonly associated with rater bias (e.g., supervisor ratings), not with standardized self-report questionnaires.
Type I error (C) is a statistical concept (rejecting a true null hypothesis), again not a specific behavioral response style in self-report.
Thus, the most relevant and problematic issue when using self-report as a criterion measure is D. Social desirability responding.