Pankratz L, Paar G H
Klinik für Psychotherapie und Psychosomatik, Essen.
Z Klin Psychol Psychopathol Psychother. 1988;36(2):130-7.
Symptom Validity Testing was developed to evaluate complaints of sensory deficits. The assessment is based on the inability of patients to perceive a sensory signal. Subjects must guess the signal using the model of coin flipping (head or tail). The signals are presented randomized in an equal number of alternatives. A 50-percent hit-rate for enough trials is expected in a true sensory deficit. Deceptive patients are expected to perform a hit-rate below the probabilities of chance.
症状效度测试旨在评估感觉缺陷的主诉。该评估基于患者无法感知感觉信号。受试者必须通过抛硬币（正面或反面）的模式来猜测信号。信号以相等数量的备选方案随机呈现。真正存在感觉缺陷的情况下，足够次数的试验预期命中率为50%。预计有欺骗行为的患者命中率会低于随机概率。
