The Shedler-Westen Assessment Procedure or SWAP is a unique psychological test for personality diagnosis and clinical case formulation. It is completed by clinicians, not patients. SWAP is based on over 16 years of scientific research. Its validity is documented in more than 90 scholarly articles in top scientific journals like American Psychologist and American Journal of Psychiatry. SWAP has been translated into fourteen languages.

SWAP combines your clinical insight with state-of-the-art science. It relies on clinicians to do what clinicians do best: Describe the patients they know. It relies on psychometric and statistical methods to do what they do best: Optimally combine information to derive accurate and psychologically rich diagnostic formulations. The result is a unique assessment tool that illuminates both the surface and depth of personality.