International Standard Iso 9241-11:2018(E)
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This preview is downloaded from www.sis.se. Buy the entire standard via https://www.sis.se/std-80003410 INTERNATIONAL ISO STANDARD 9241-11 Second edition 2018-03 Ergonomics of human-system interaction — Part 11: Usability: Definitions and concepts Ergonomie de l'interaction homme-système — Partie 11: Utilisabilité — Définitions et concepts Reference number ISO 9241-11:2018(E) © ISO 2018 This preview is downloaded from www.sis.se. Buy the entire standard via https://www.sis.se/std-80003410 ISO 9241-11:2018(E) COPYRIGHT PROTECTED DOCUMENT © ISO 2018 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address belowCP 401or ISO’s • Ch. member de Blandonnet body in 8 the country of the requester. ISO copyright office Phone: +41 22 749 01 11 CH-1214 Vernier, Geneva Fax:Website: +41 22www.iso.org 749 09 47 PublishedEmail: [email protected] Switzerland ii © ISO 2018 – All rights reserved This preview is downloaded from www.sis.se. Buy the entire standard via https://www.sis.se/std-80003410 ISO 9241-11:2018(E) Contents Page Foreword ..........................................................................................................................................................................................................................................v Introduction ................................................................................................................................................................................................................................vi 1 Scope ................................................................................................................................................................................................................................. 1 2 Normative references ...................................................................................................................................................................................... 1 3 Terms and definitions ..................................................................................................................................................................................... 1 4 Rationale and benefits of usability .................................................................................................................................................... 6 5 Usability in a context of use....................................................................................................................................................................... 6 ............................................................................................................................................................................ 6 ............................................................................................................................................................ 8 5.1 Concept of usability .................................................................................. 8 5.2 System, product ......................................................................................................................................................................................or service 8 5.3 Consideration of usability ................................................................................................................................................................... for “specified” circumstances 8 5.3.1 General .................................................................................................................................................................... 8 5.3.2 Specified users ........................................................................................................................................... 8 5.3.3 Specified goals 6 Outcomes of use..................................................................................................................................................................................................... 9 5.3.4 Specified contexts of use .................................................................................................................................................................. 9 6.2 Effectiveness ............................................................................................................................................................................................. 9 6.1 Usability as an outcome...................................................................................................................................................................................... 9 .................................................................................................................................................................................. 9 6.2.16.2.3 GeneralCompleteness ...................................................................................................................................................................10 6.2.2 Accuracy ...................................................................................................................................................................................................10 ...................................................................................................................................................................................10 6.3 Efficiency6.3.2 Time used ............................................................................................................................................................................11 6.3.1 General ..........................................................................................................................................11 ...........................................................................................................................11 6.3.3 Human effort expended ....................................................................................................................................................11 6.4 Satisfaction6.3.4 Financial .............................................................................................................................................................................................. resources expended 11 6.3.5 Materials................................................................................................................................................................................... expended 11 ......................................................................................................................................................11 6.4.16.4.3 GeneralCognitive responses ...................................................................................................................................................12 6.4.26.4.4 PhysicalEmotional responses responses .................................................................................................................................................12 .........................................................................................................................12 6.6 Other outcomes of use ...................................................................................................................................................................12 6.5 Specific uses of the................................................................................................................................................................................... concept of usability 12 ......................................................................................................................................................................12 6.6.1 General .............................................................................................................................................................13 6.6.26.6.4 AccessibilityAvoidance of harm from use ...............................................................................................................................13 6.6.3 User experience 7 Context of use ........................................................................................................................................................................................................13 .......................................................................................................................................13 .............................................................................................................................................14 7.1 Components of the context of use ..............................................................................................................................................14 7.2 Users within the context of use ..............................................................................................................................................15 7.37.5 GoalsResources within .................................................................................................................................................................................................. the context of use 16 7.4