Canadian Occupational Performance Measure – 5th ed.

Abstract

The Canadian Occupational Performance Measure (COPM) is a standardized, client-centered outcome measure designed primarily for use in occupational therapy. Its core purpose is to identify specific problems in daily functioning as perceived by the client and to establish relevant, measurable treatment goals. The COPM facilitates the evaluation of changes in the client’s perception of their occupational performance over the course of intervention, focusing on the three main areas of occupational engagement: Self-care, Productivity, and Leisure.

Keywords

Canadian Occupational Performance Measure, COPM, Occupational Performance, Client-Centered Assessment, Outcome Measure, Goal Setting, Self-care, Productivity, Leisure, Participation.

Authors

Law M, Baptiste S, et al. (Original 1990, 5th ed. 2014); Dutch version: van Duijn HM, Niezen AA, Cardol M, Corder-Bartels IE, Verkerk GJQ (1999); 5th ed. Dutch adaptation: Eijssen I, Verkerk G, van Hartingsveldt M (2018)

Purpose

The primary purpose of the COPM is to structure and guide the occupational therapy process by focusing on the client’s unique perspective regarding their performance issues. It serves as a semi-structured interview used at the initial assessment to identify areas of concern and subsequently quantify the client’s satisfaction and performance ratings in those identified areas.

Furthermore, the COPM functions as a crucial outcome measure, allowing clinicians to track effectiveness throughout treatment. By measuring changes in performance and satisfaction scores, it helps clarify the client’s perceived needs (hulpvraag) and ensures that interventions remain relevant and centered on the client’s priorities in their daily life.

Construct

The COPM measures the psychological and functional construct of Occupational Performance, which is defined as the individual’s subjective experience of engaging in meaningful and necessary occupations. This construct is operationalized across three broad domains of human activity, reflecting a holistic view of function:

• Self-care: Activities related to maintaining oneself, including personal care, functional mobility, and community management.

• Productivity: Activities that contribute to society or provide economic sustenance, such as paid or unpaid work, household management, and school activities.

• Leisure: Activities engaged in for relaxation, enjoyment, or recreation, covering quiet recreation, active recreation, and socialization.

The scale is unique in that it measures not the objective capacity for performance, but the client’s perception of their performance and their level of satisfaction with that performance, making it a highly client-centered measure.

Validity

The COPM is widely recognized for its strong face and content validity, particularly because the items assessed are directly nominated by the client, ensuring relevance to their daily life. Studies have consistently supported the construct validity, demonstrating that the COPM scores correlate logically with other measures of function, quality of life, and disability, though typically showing a stronger correlation with subjective measures than objective ones.

The measure exhibits responsiveness, indicating its ability to detect clinically significant changes in performance and satisfaction over time, which is essential for an outcome measure. Specific validation studies across diverse populations, including those with stroke, chronic pain, and pediatric conditions, confirm its applicability and meaningfulness across various clinical settings.

Reliability

The COPM demonstrates strong inter-rater reliability and test-retest reliability, particularly when administered by trained occupational therapy professionals. High internal consistency is generally not applicable in the traditional sense, as the scale items are chosen by the client and are heterogeneous; however, the scoring mechanism for performance and satisfaction demonstrates consistency.

Reliability studies generally support the stability of the performance and satisfaction scores when no clinical change has occurred. The structured interview format helps minimize variability in administration, contributing to the overall reliability of the measure.

Factor Analysis

Traditional factor analysis is not typically applied to the COPM in the same manner as multi-item questionnaires, primarily because the items are client-generated and specific to the individual, resulting in a unique item set for each administration. However, the overarching structure of the COPM is based on the theoretical factors of Self-care, Productivity, and Leisure, which are derived from the foundational models of occupational science.

Research focusing on the scoring mechanism often confirms that the two main scores—Performance and Satisfaction—function as distinct but related constructs, reflecting the dual nature of the client’s subjective experience of occupational engagement.

Instrument

Test Type: Structured Interview / Questionnaire

Format: Semi-structured interview process followed by a numerical rating scale (1 to 10 scale for both Performance and Satisfaction)

Language Available: English, Dutch, and numerous other translations worldwide.

Population Group: Clinical and non-clinical populations experiencing difficulties in daily occupational performance.

Age Group: Children, Adults, and The Elderly.

Population Details: Applicable across a broad range of diagnoses and disabilities, where the individual is capable of understanding and participating in a goal-setting interview.

Test Methodology: The client identifies up to five problems in their occupational performance. For each identified problem, the client rates their current performance and their satisfaction with that performance on a 10-point scale. The scores are averaged to provide overall COPM Performance and Satisfaction scores.

Keywords

Occupational Science, Outcome Measurement, Performance Rating, Satisfaction Rating, Treatment Efficacy, Rehabilitation, Self-care, Goal Attainment.

Authors

Author ORCID Identifier: Not provided in source content.

Affiliation Email addresses: Not provided in source content.

Correspondence Address: Typically managed through the official COPM copyright holders/distributors (M. Law, S. Baptiste).

Permissions & Fee and Test Year

The COPM is a copyrighted measure, and permission for use, including associated fees, must be obtained from the original copyright holders or official distributors. The original version was published in 1990. The 5th edition was released in 2014. The Dutch 5th edition adaptation was published in 2018.

An explanatory form related to the Dutch version can be downloaded here: Toelichtingsformulier (PDF).

Reference’s

Law M, Baptiste S, Carswell A, McColl MA, Polatajko H, Pollock N. (2014). Canadian Occupational Performance Measure, 5th Edition. CAOT Publications ACE.

van Duijn HM, Niezen AA, Cardol M, Corder-Bartels IE, Verkerk GJQ. (1999). Nederlandse versie van de Canadian Occupational Performance Measure.

Eijssen I, Verkerk G, van Hartingsveldt M. (2018). Nederlandse bewerking 5e editie COPM.

The original PDF explanatory form referenced in the source content: https://scales.arabpsychology.com/wp-content/uploads/instrumenten/COPM-form-1.pdf

Items of the Canadian Occupational Performance Measure – 5th ed.

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

The COPM is a client-generated measure; therefore, there are no fixed, standardized items provided here. The items are individually identified by the client during the interview process, based on their perceived difficulties across the three domains: Self-care, Productivity, and Leisure.