A previous IBPP article (V. 2, No. 9, "The Political Psychology of Deception Research" described some of the complexities in assessing how psychological assessment instruments are vulnerable to deception--e.g., the purposeful "faking bad" of test takers. That article focused on some ethical Issues of deception research and the concept of the social transformation of knowledge that threatens reliability and validity of assessment instruments through time. The present article focuses on a methodological consideration in documenting the threat of deception to psychological assessment.