Symptom validity testing: A case study method for diagnosis of non-organicsymptoms

Symptom validity testing (SVT), a special forced-choice technique, has been successful in malingering detection and research. It is applicable for rep orted sensory and cognitive symptoms, with a number of new instruments espe cially designed for assessing memory complaints. However, even with SVT, th e conceptual problem of differentiating between malingering, factitious dis orders, and somatoform disorders (e.g., "hysteria") is not resolved. A case study is presented in which the reported loss of sensory perception disapp eared during the assessment.