Strengthening Clinical Assessment Practices with Performance and Symptom Validity Tests 

This presentation highlights the essential role of performance and symptom validity testing in strengthening the accuracy and defensibility of psychological assessments. Traditional clinical judgment often fails to detect suboptimal effort or exaggeration, making validity measures a necessary safeguard in both clinical and forensic contexts. These tests are used whenever decisions depend on accurate information, such as diagnosis, educational eligibility, workplace accommodations, disability determinations, or legal proceedings. Performance validity tests are designed to appear difficult but are easy, so failures suggest reduced effort. Symptom validity tests evaluate the credibility of self-report data. Current guidelines emphasize the importance of using multiple validity indicators, integrating both stand-alone and embedded measures throughout evaluations. Case examples demonstrate their application with children and adults, illustrating how validity data can clarify whether test results reflect genuine ability or non-credible responding. Ethical considerations are central, as psychologists are required to avoid harm, base opinions on sufficient information, and carefully interpret results in context. Communicating non-credible performance requires sensitivity, providing explanations, and considering possible contributing factors. Ultimately, incorporating validity testing ensures evaluations are reliable, ethically sound, and capable of guiding effective decisions, thereby protecting both clients and the integrity of psychological practice.