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Child Occupational Self Assessment (COSA) Version 2.1, 2005
Authors: Jessica Keller, Anna Kafkes, Semonti Basu, Jeanne Federico, and Gary Kielhofner
The Child Occupational Self Assessment (COSA) is a client directed assessment tool and an outcome measure designed to capture children's and youth's perceptions regarding their own sense of occupational competence and the importance of everyday activities. Using the instrument in therapy provides a young client with an opportunity to identify and address their participation in important and meaningful occupations.
The COSA consists of a series of statements pertaining to everyday occupational participation, and includes tasks related to school, home, and in the community. Its self-rating design allows the client to document his/her understanding of occupational competence and values using familiar visual symbols and simple language. There are two versions of the COSA:
• A card sort version, and
• A checklist form version.
The manual provides instructions on administration, interpretation, and modifications to ensure access for clients of all abilities. The manual also includes three case illustrations.
To see an example of the “COSA Checklist Form Version”, click here. (PDF file.)
To view the “COSA Summary Rating Form”, click here. (PDF file.)
The COSA Manual includes “COSA Checklist Form Version”, the “COSA Summary Rating Form”, and materials to administer the “COSA Card Sort Version”. All forms are reproducible.
Therapists who have purchased a COSA manual can download color copies of the COSA forms. This pdf is password protected, and the password is provided on page 2 of the COSA manual. Click here for color copies of the COSA forms.
Click here for more detailed information on the most recent COSA research.
This assessment is discussed and illustrated with a case in chapter 16 of The Model Of Human Occupation: Theory and Application (Kielhofner, 2008).
Additional information (references, research, and clinical discussion regarding this assessment) can be found in the Evidence-Based Practice section of this website by selecting this assessment.