1. https://www.ibm.com/support/pages/partial-rank-correlations-spss. Date of Access: 5/1/2021.
2. American Psychiatric Association, Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR), American Psychiatric Association, Washington, D.C., 2000.
3. Practice guideline for the treatment of patients with schizophrenia;American Psychiatric Association;Am. J. Psychiatry,1997
4. Scale for the assessment of negative symptoms (SANS);Andreasen,1984
5. Scale for the Assessment of Positive Symptoms (SAPS), Department of Psychiatry, College of Medicine, the University of Iowa;Andreasen,1984