Assessing the usability of complex psychosocial interventions: The Intervention Usability Scale

Document Type

Article

Publication Date

2021

Publication Title

Implementation Research and Practice

Volume

2

First page number:

1

Last page number:

9

Abstract

Usability—the extent to which an intervention can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction—may be a key determinant of implementation success. However, few instruments have been developed to measure the design quality of complex health interventions (i.e., those with several interacting components). This study evaluated the structural validity of the Intervention Usability Scale (IUS), an adapted version of the well-established System Usability Scale (SUS) for digital technologies, to measure the usability of a leading complex psychosocial intervention, Motivational Interviewing (MI), for behavioral health service delivery in primary care. Prior SUS studies have found both one- and two-factor solutions, both of which were examined in this study of the IUS.

Keywords

complex health interventions, psychosocial interventions, mental health, usability, human-centered design, primary care

Disciplines

Social and Behavioral Sciences

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