David (1990) reported that insight cannot be evaluated as either present or absent, and he defined it as a three-way process consisting of compliance with treatment, awareness of the illness, and accurate recognition of psychotic experiences.Based on these components, he developed this clinician-administered scale that quantitatively assesses insight for patients with schizophrenia. It is an 8-question, clinician-administered, semi-structured scale. "Treatment acceptance"(1a), " treatmentrequest" (1b), "knowledge of illness" (2a), "knowledge of mental illness" (2b), "explanation of illness" (2c), "In addition to the 7 subscales titled "believing in the truth of the delusion" (3a), "explaining their experiences" (3b), there is a subscale titled "reaction to disbelief".
Scoring: The highest total score for the first 7 questions is 14. The eighth question (How do you feel when people do not believe you in ........ situations?) was presented hypothetically, and it was left to the interviewer to ask this question. The highest total score with this question is 18. A high score indicates a high level of insight. The reliability and validity study of this scale in Turkish was conducted by Aslan et al.