Concepedia

TLDR

This article follows a prior review of 15 ADL assessments, emphasizing the need for standardized tools and evaluating their reliability and validity for occupational therapists. It clarifies the meanings of reliability, validity, and operationalisation, and outlines the risks of employing assessments that lack or misapply these concepts.

Abstract

This is the second of two articles addressing the design and use of assessments of activities of daily living (ADL). The first article reviewed 15 published ADL assessments and evaluated their usefulness for occupational therapists together with any evidence for their reliability and validity. The importance of using standardised assessments was stressed. This second article explains what is meant by terms such as reliability, validity and operationalisation. It details the consequences of using assessments in which these terms are misunderstood or, even, totally absent.