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BS EN ISO 9241-11:2018

BS EN ISO 9241-11:2018

$167.15

Ergonomics of human-system interaction – Usability: Definitions and concepts

Published By Publication Date Number of Pages
BSI 2018 38
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This document provides a framework for understanding the concept of usability and applying it to situations where people use interactive systems, and other types of systems (including built environments), and products (including industrial and consumer products) and services (including technical and personal services).

NOTE In this document, the phrase “object of interest” refers to the system, product or service for which usability is being considered (see 8.1).

This document:

  • explains that usability is an outcome of use;

  • defines key terms and concepts;

  • identifies the fundamentals of usability; and

  • explains the application of the concept of usability.

It does not describe specific processes or methods for taking account of usability in design development or evaluation.

The intended users of this document include:

  • usability/ergonomics/human factors professionals;

  • designers and developers of systems, products and services;

  • quality assurance personnel;

  • public and corporate purchasers; and

  • consumer organizations.

The most common applications of this document are in design and evaluation.

PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
10 3.1 Usability
12 3.2 Related concepts and disciplines
13 3.3 Other definitions
14 4 Rationale and benefits of usability
5 Usability in a context of use
5.1 Concept of usability
16 5.2 System, product or service
5.3 Consideration of usability for “specified” circumstances
5.3.1 General
5.3.2 Specified users
5.3.3 Specified goals
5.3.4 Specified contexts of use
17 6 Outcomes of use
6.1 Usability as an outcome
6.2 Effectiveness
6.2.1 General
6.2.2 Accuracy
18 6.2.3 Completeness
6.3 Efficiency
6.3.1 General
19 6.3.2 Time used
6.3.3 Human effort expended
6.3.4 Financial resources expended
6.3.5 Materials expended
6.4 Satisfaction
6.4.1 General
6.4.2 Physical responses
20 6.4.3 Cognitive responses
6.4.4 Emotional responses
6.5 Specific uses of the concept of usability
6.6 Other outcomes of use
6.6.1 General
6.6.2 Accessibility
21 6.6.3 User experience
6.6.4 Avoidance of harm from use
7 Context of use
7.1 Components of the context of use
22 7.2 Users within the context of use
7.3 Goals within the context of use
23 7.4 Tasks within the context of use
24 7.5 Resources
7.5.1 General
7.5.2 Reusable resources
7.5.3 Expendable resources
7.6 Environment
7.6.1 General
7.6.2 Technical environment
25 7.6.3 Physical environment
7.6.4 Social, cultural and organizational environment
8 Applying the concept of usability
8.1 Usability that results from use of various objects of interest
26 8.2 Characteristics of users, tasks and environments needed for usability
8.3 Achieving usability in design and development
27 8.4 Usability in procurement
8.5 Usability in a review or when making a comparison
8.6 Usability inputs to marketing and market research
28 Annex A (informative) Relationship of usability to other concepts
33 Annex B (informative) Usability measurement
36 Bibliography

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BS EN ISO 9241-11:2018
$167.15