The Structured Interview of Reported Symptoms (SIRS) is a fully structured interview that is designed to assess feigned mental disorders and related response styles. Each of its eight primary scales was constructed to evaluate well-established detection strategies for differentiating between malingered and genuine psychopathology. These primary scales consist of Rare Symptoms (RS), Symptom Combinations (SC), Improbable and Absurd Symptoms (IA), Blatant Symptoms (BL), Subtle Symptoms (SU), Selectivity of Symptoms (SEL), Severity of Symptoms (SEV), and Reported Versus Observed Symptoms (RO).