Calgary Depression Scale for Schizophrenia (CDSS)

Addington D; Addington J; Schissel B

Distributed by Mapi Research Trust


Distributed by Mapi Research Trust

Basic description

Developed in 1990;

Derived from two widely used instruments: the depressive syndrome scores of the Present State Examination (developed in 1974 by Wing et al.) and the Hamilton Depression Rating Scale (developed in 1960 by Hamilton)


Addington D; Addington J; Schissel B

Copyright © 2018 (Dr Addington) All Rights Reserved
To assess the level of depression in schizophrenia (assess depressive symptoms separate from positive, negative and extrapyramidal symptoms)
Therapeutic area
  • Mental Disorders
Therapeutic indication


Acute and remitted phases of schizophrenia
Type of Clinical Outcome Assessment (COA)
  • clinro ClinRO
Original language(s)
  • English for Canada
Bibliographic reference(s) of the original questionnaire

Addington D, Addington J, Schissel B. A depression rating scale for schizophrenics. Schizophr Res. 1990 Jul-Aug;3(4):247-51 (PubMed Abstract)

Addington D, Addington J, Maticka-Tyndale E, Joyce J. Reliability and validity of a depression rating scale for schizophrenics. Schizophr Res. 1992 Mar;6(3):201-8 (PubMed Abstract)

Addington D, Addington J, Maticka-Tyndale E. Assessing depression in schizophrenia: the Calgary Depression Scale. Br J Psychiatry Suppl. 1993 Dec;(22):39-44 (PubMed abstract)

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Contact and conditions of use


Addington D; Addington J; Schissel B

-Dr. Donald Addington MBBS, MRCPsych, FRCPC

Professor, Department of Psychiatry, University of Calgary
Member, Mathison Centre for Mental Health Research and Education
Foothills Hospital, Room 289 B, SSB
1403 29 Street NW, Calgary, Alberta
Canada T2N 2T9
Phone: 403-944-2637
Fax: 403- 270-3451
E-mail: addingto@ucalgary.ca

Donald Addington Publications(PubMed)

Contact information

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Original language(s)

  • English for Canada


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More information on translations

Bibliographic references of the translations:

Lançon C, Auquier P, Reine G, Toumi M, Addington D. Evaluation of depression in schizophrenia: psychometric properties of a French version of the Calgary Depression Scale. Psychiatry Res. 1999 Dec 20;89(2):123-32 (PubMed Abstract)

Müller MJ, Marx-Dannigkeit P, Schlösser R, Wetzel H, Addington D, Benkert O. The Calgary Depression Rating Scale for Schizophrenia: development and interrater reliability of a German version (CDSS-G). J Psychiatr Res. 1999 Sep-Oct;33(5):433-43 (PubMed Abstract)

Kaneda Y, Ohmori T, Addington D. [The Japanese version of the Calgary Depression Scale for Schizophrenics (JCDSS)]. No To Shinkei. 2000 Feb;52(2):163-6 (PubMed Abstract)

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