Ergonomic principles related to mental workload - Part 1: General issues and concepts, terms and definitions (ISO 10075-1:2017)

ISO 10075-1:2017 defines terms in the field of mental workload, covering mental stress and mental strain, and short- and long-term, positive and negative consequences of mental strain. It also specifies the relations between these concepts involved.
In this document, mental workload is regarded as an umbrella or generic term, referring to all the concepts and constructs mentioned in the document and does not have a specified or standardized meaning of its own within the document. This is consistent with the use of the term in ergonomics and its applications, where it can refer to mental stress, mental strain and their effects, i.e. both to the causes and the effects. In this document, the term mental workload will thus not be treated as a technical term but only as a reference to the domain of mental workload.
NOTE       Annex A gives additional explanations of terms and concepts.
ISO 10075-1:2017 applies to the design of working conditions with respect to mental workload and is intended to promote a common usage of terminology between experts and practitioners in the field of ergonomics as well as in general.
ISO 10075-1:2017 does not address methods of measurement and principles of task design, which are dealt with in ISO 10075‑2 and ISO 10075‑3.

Ergonomische Grundlagen bezüglich psychischer Arbeitsbelastung - Allgemeine Aspekte und Konzepte und Begriffe (ISO 10075-1:2017)

Principes ergonomiques concernant la charge de travail mental - Partie 1: Questions et concepts généraux, termes et définitions (ISO 10075-1:2017)

ISO 10075-1:2017 définit les termes du domaine de la charge de travail mental, y compris la contrainte mentale et l'astreinte mentale, ainsi que les conséquences positives et négatives, à court terme et à long terme, de l'astreinte mentale. Il prescrit les relations entre les concepts en jeu.
Dans le présent document, la charge de travail mental est considérée comme un terme générique se rapportant à tous les concepts et éléments mentionnés dans le document et n'a pas de signification propre spécifiée ou normalisée dans le document. Cela est cohérent avec l'utilisation du terme en ergonomie et ses applications, où il peut se rapporter à une contrainte mentale, à une astreinte mentale et à leurs effets, c'est-à-dire à la fois aux causes et aux effets. Dans le présent document, le terme «charge de travail mental» ne sera pas traité comme un terme technique, mais uniquement comme une référence au domaine de la charge de travail mental.
NOTE       L'Annexe A donne des explications additionnelles des termes et concepts.
ISO 10075-1:2017 est applicable à la conception des conditions de travail eu égard à la charge de travail mental et vise à promouvoir l'usage commun d'une terminologie entre experts et praticiens dans le domaine de l'ergonomie ainsi qu'en général.
ISO 10075-1:2017 ne définit ni méthodes de mesurage ni principes de conception des tâches, lesquels sont traités dans l'ISO 10075‑2 et l'ISO 10075‑3.

Ergonomska načela v zvezi s psihičnimi obremenitvami - 1. del: Splošni pojmi, izrazi in definicije (ISO 10075-1:2017)

Ta dokument določa izraze na področju psihične obremenitve, ki zajema psihični stres in psihični napor ter kratkoročne in dolgoročne ter pozitivne in negativne posledice duševnega napora. Določa tudi povezave med temi koncepti.
V tem dokumentu se psihična obremenitev obravnava kot krovni ali splošni izraz, ki se nanaša na vse koncepte in konstrukte, omenjene v dokumentu, in v dokumentu nima določenega ali standardiziranega lastnega pomena. To je skladno z uporabo izraza v ergonomiji in njenih primerih uporabe, kjer se lahko nanaša na psihični stres, psihični napor ter njune učinke, tj. vzroke in posledice. Zato se izraz psihična obremenitev v tem dokumentu ne bo obravnaval kot tehnični izraz, temveč le kot referenca na področju psihične obremenitve.
OPOMBA: Dodatek A podaja dodatne razlage izrazov in konceptov.
Ta dokument se uporablja za oblikovanje delovnih pogojev v zvezi s psihično obremenitvijo in je namenjen spodbujanju skupne uporabe terminologije med strokovnjaki in izvajalci na področju ergonomije ter na splošno.
Ta dokument ne obravnava metod merjenja in načel oblikovanja nalog, ki so obravnave v standardih ISO 10075-2 in ISO 10075-3.

General Information

Status
Published
Publication Date
24-Oct-2017
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
25-Oct-2017
Completion Date
25-Oct-2017

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SLOVENSKI STANDARD
SIST EN ISO 10075-1:2018
01-februar-2018
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SIST EN ISO 10075-1:2002
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Ergonomic principles related to mental work-load - Part 1: General concepts, terms and

definitions (ISO 10075-1:2017)

Ergonomische Grundlagen bezüglich psychischer Arbeitsbelastung - Teil 1: Allgemeine

Konzepte und Begriffe (ISO 10075-1:2017)
Principes ergonomiques concernant la charge de travail mental - Partie 1: Termes
généraux et leurs définitions (ISO 10075-1:2017)
Ta slovenski standard je istoveten z: EN ISO 10075-1:2017
ICS:
01.040.13 Okolje. Varovanje zdravja. Environment. Health
Varnost (Slovarji) protection. Safety
(Vocabularies)
13.180 Ergonomija Ergonomics
SIST EN ISO 10075-1:2018 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 10075-1:2018
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SIST EN ISO 10075-1:2018
EN ISO 10075-1
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2017
EUROPÄISCHE NORM
ICS 13.180; 01.040.13 Supersedes EN ISO 10075-1:2000
English Version
Ergonomic principles related to mental workload - Part 1:
General issues and concepts, terms and definitions (ISO
10075-1:2017)

Principes ergonomiques concernant la charge de Ergonomische Grundlagen bezüglich psychischer

travail mental - Partie 1: Questions et concepts Arbeitsbelastung - Allgemeine Aspekte und Konzepte

généraux, termes et définitions (ISO 10075-1:2017) und Begriffe (ISO 10075-1:2017)

This European Standard was approved by CEN on 29 June 2017.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10075-1:2017 E

worldwide for CEN national Members.
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SIST EN ISO 10075-1:2018
EN ISO 10075-1:2017 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 10075-1:2018
EN ISO 10075-1:2017 (E)
European foreword

This document (EN ISO 10075-1:2017) has been prepared by Technical Committee ISO/TC 159

“Ergonomics” in collaboration with Technical Committee CEN/TC 122 “Ergonomics” the secretariat of

which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by April 2018, and conflicting national standards shall be

withdrawn at the latest by April 2018.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 10075-1:2000.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 10075-1:2017 has been approved by CEN as EN ISO 10075-1:2017 without any

modification.
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SIST EN ISO 10075-1:2018
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SIST EN ISO 10075-1:2018
INTERNATIONAL ISO
STANDARD 10075-1
First edition
2017-09
Ergonomic principles related to
mental workload —
Part 1:
General issues and concepts, terms
and definitions
Principes ergonomiques concernant la charge de travail mental —
Partie 1: Questions et concepts généraux, termes et définitions
Reference number
ISO 10075-1:2017(E)
ISO 2017
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SIST EN ISO 10075-1:2018
ISO 10075-1:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland

All rights reserved. Unless otherwise specified, 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 below or ISO’s member body in the country of

the requester.
ISO copyright office
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Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
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SIST EN ISO 10075-1:2018
ISO 10075-1:2017(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Concepts ........................................................................................................................................................................................................................ 5

4.1 General ........................................................................................................................................................................................................... 5

4.2 Mental stress ............................................................................................................................................................................................. 5

4.2.1 Components of mental stress ............................................................................................................................... 5

4.2.2 Short- vs. long-term effects of mental stress ........................................................................................... 6

Annex A (informative) Additional explanations of terms and concepts .......................................................................... 7

Bibliography ................................................................................................................................................................................................................................ 9

© ISO 2017 – All rights reserved iii
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SIST EN ISO 10075-1:2018
ISO 10075-1:2017(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 159, Ergonomics, Subcommittee SC 1,

General ergonomics principles.

This first edition of ISO 10075-1, together with ISO 10075-2 and ISO 10075-3, cancels and replaces

ISO 10075:1991, which has been technically revised.
The main changes compared to the previous edition are as follows:
— Clause 1 has been adjusted;

— Clause 2 and the terms 3.1.2, 3.2.1.2, 3.2.1.3, 3.2.2.1, 3.2.3.2, 3.2.3.2.1, 3.2.3.2.2 and 3.2.3.3 have

been technically revised;
— the term 3.2.4.1 has been added;
— the term 3.2.3.2.3 has been corrected;
— Table A.1 has been updated;

— a linkage between ISO 10075-1 and ISO 6385 has been highlighted where applicable;

— Clause 3 has been restructured.
A list of all parts in the ISO 10075 series can be found on the ISO website.
iv © ISO 2017 – All rights reserved
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SIST EN ISO 10075-1:2018
ISO 10075-1:2017(E)
Introduction

This document represents an extension of ISO 6385, with special respect to mental workload, describing

general issues, concepts and terms in more detail because of the specific consequences that have to be

taken into account in this domain.

These concepts from the field of mental workload include mental stress, mental strain and their effects.

Since there is a variety of different conceptions concerning mental workload, mental stress and mental

strain, both in colloquial as well as in scientific usage, a standardization of the relevant concepts and

terms in the field of ergonomics is required.

In this document, mental workload is considered as an umbrella term encompassing mental stress and

mental strain. Mental stress is considered as a neutral term rather than the negative outcome from

workload and other factors adopted in other approaches. In this way, it reflects a parallel with the

engineering use of the terms stress and strain. Thus, mental stress refers to the causes of mental strain,

and mental strain refers to the effects of that stress in the individual. This is consistent with the use of

the terms in other ergonomics standards, e.g. on thermal stress (see ISO 7933).
© ISO 2017 – All rights reserved v
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SIST EN ISO 10075-1:2018
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SIST EN ISO 10075-1:2018
INTERNATIONAL STANDARD ISO 10075-1:2017(E)
Ergonomic principles related to mental workload —
Part 1:
General issues and concepts, terms and definitions
1 Scope

This document defines terms in the field of mental workload, covering mental stress and mental strain,

and short- and long-term, positive and negative consequences of mental strain. It also specifies the

relations between these concepts involved.

In this document, mental workload is regarded as an umbrella or generic term, referring to all the

concepts and constructs mentioned in the document and does not have a specified or standardized

meaning of its own within the document. This is consistent with the use of the term in ergonomics

and its applications, where it can refer to mental stress, mental strain and their effects, i.e. both to

the causes and the effects. In this document, the term mental workload will thus not be treated as a

technical term but only as a reference to the domain of mental workload.
NOTE Annex A gives additional explanations of terms and concepts.

This document applies to the design of working conditions with respect to mental workload and is

intended to promote a common usage of terminology between experts and practitioners in the field of

ergonomics as well as in general.

This document does not address methods of measurement and principles of task design, which are dealt

with in ISO 10075-2 and ISO 10075-3.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
© ISO 2017 – All rights reserved 1
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SIST EN ISO 10075-1:2018
ISO 10075-1:2017(E)
3.1 Terms and definitions associated with mental workload
3.1.1
mental stress

total of all assessable influences impinging upon a human being from external sources and affecting

that person mentally

Note 1 to entry: Since mental stress in this document refers to the total of all assessable factors impinging

upon an individual mentally, the colloquial usage of the term mental stresses (plural) is inconsistent with the

definition of mental stress in this document. The “total of all assessable influences” means that mental stress

is usually comprised of different factors contributing to this total. The combination of all these factors is the

resulting mental stress. Additional factors will change the resulting mental stress, but are not considered as new

kinds of mental stress. It is the result of the coaction of all effects that is referenced by the term mental stress. For

these reasons, a clear terminological differentiation between mental stress as the total of all impinging effects

(as defined above) and single or multiple factors as components of this mental stress is required.

Note 2 to entry: The use of “mental stress” in this document is compatible with the use of the term “work stress”

in ISO 6385, where it is synonymously used with the term “external workload”.
3.1.2
mental strain

immediate effect of mental stress (3.1.1) within the individual depending on their current condition

EXAMPLE Examples of relevant conditions can be age, gender, skills, coping strategies, fatigue, mood.

Note 1 to entry: Considerations in 3.1.1, Note 1 to entry also apply to the concept of mental strain, which refers to

the total, immediate impact within the individual resulting from mental stress.
3.2 Consequences of mental strain

NOTE The order of the following terms and definitions does not imply any functional relationships.

3.2.1 Facilitating effects resulting from short-term exposure
3.2.1.1
warming-up effect

frequent consequence of mental strain (3.1.2) which, soon after an activity has started, results in a

reduction of the effort required to perform that activity relative to the effort initially required

3.2.1.2
activation
internal state resulting in increased mental and physical activity

Note 1 to entry: Mental strain (3.1.2) can lead to different degrees of activation, depending on its duration and

intensity. There is a range in which the activation level is optimal, e.g. neither too low nor too high, ensuring best

functional efficiency.
3.2.1.3
learning

process based on (work) experiences that leads to enduring changes in behaviour or behavioural

potential, e.g. plans, attitudes and values
3.2.2 Facilitating effects resulting from long-term or repeated exposure
3.2.2.1
practice effect

enduring change in individual performance, associated with learning (3.2.1.3) processes, following

from repeated experience of the same kind of mental strain (3.1.2)
2 © ISO 2017 – All rights reserved
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SIST EN ISO 10075-1:2018
ISO 10075-1:2017(E)
3.2.2.2
competence development
complex form of learning involving the acquisition, consolidation, enhanceme
...

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