This dimension measures the effect of a disability on a person's daily life. Any task or action, such as riding a bike, taking a test, or having a conversation, that is effected by a person's disability would be viewed as an activity limitation. 

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Under the Three Dimensions of Disability Model, disabilities can be categorized into the following dimensions. 
-	Impairment
-	Activity Limitation
-	Participation Restrictions


The Dimensions of the “Three Dimensions of Disability Classification Model”

World Health Organization. (1999, July). International Classification of Functioning and Disability Short Version. International Classification of Functioning and Disability . Retrieved September 16, 2021, from https://apps.who.int/iris/bitstream/handle/10665/65990/WHO_HSC_ACE_99.2.pdf;jsessionid=54763AC8EED273FF4148169E93CC5962?sequence=1. 

WHO: International Classification of Functioning and Disability

Centers for Disease Control and Prevention. (2020, September 16). Disability and health overview. Centers for Disease Control and Prevention. Retrieved September 16, 2021, from https://www.cdc.gov/ncbddd/disabilityandhealth/disability.html. 

CDC: Disability and Health Overview

Also known as body dimension. This dimension measures the effect of a disability on one's physical body. This can include effect on a body's structure, such as loss of a limb, or a body's function, such as loss of memory.

Impairment Dimension

Activity Limitation Dimension

This dimension measures the effects a disability has on engaging in activities that involve other people. These would include effects on work, education, and personal relationships. 

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