EN ISO 10075-1:2017

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
• Withdrawal Date: 29-Apr-2018
• ICS: 01.040 - Vocabularies
• ICS: 01.040.13 - Environment. Health protection. Safety (Vocabularies)
• ICS: 13.180 - Ergonomics
• Technical Committee: CEN/TC 122 - Ergonomics
• Drafting Committee: CEN/TC 122/WG 2 - Ergonomic design principles
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 25-Oct-2017
• Completion Date: 25-Oct-2017
• Ref Project: SIST EN ISO 10075-1:2018 - Ergonomic principles related to mental work-load - Part 1: General concepts, terms and definitions (ISO 10075-1:2017)

Relations

• Replaces: EN ISO 10075-1:2000 - Ergonomic principles related to mental work-load - Part 1: General terms and definitions (ISO 10075:1991)
• Effective Date: 08-Nov-2017

Overview

EN ISO 10075-1:2017 - Ergonomic principles related to mental workload (Part 1) provides standardized terms and definitions for the mental workload domain. Prepared by ISO/TC 159 and adopted by CEN, this part defines core concepts such as mental stress, mental strain, and the short- and long‑term, positive and negative consequences of mental strain. The document treats mental workload as an umbrella term (not a prescriptive technical metric) and clarifies relationships between causes (stress) and effects (strain) to support consistent terminology across ergonomics practice.

Key topics

• Definitions and scope
  • Clear definitions for mental stress (total of assessable external influences) and mental strain (immediate effect within the individual).
  • Mental workload used as a domain descriptor rather than a single technical term.
• Consequences of mental strain
  • Short-term facilitating effects: warming-up effect, activation, learning.
  • Long-term facilitating effects: practice effect, competence development.
  • Short-term impairing effects: mental fatigue, fatigue-like states, plus distinctions by temporal pattern and recovery.
• Conceptual relationships
  • Specification of how stress, strain and their effects relate conceptually.
  • Emphasis on individual conditions that modulate strain (age, skills, fatigue, mood, coping strategies).
• Informative material
  • Annex A provides additional explanations of terms and concepts.
• Limitations
  • Does not include measurement methods or task design principles - these are covered in ISO 10075‑2 and ISO 10075‑3.
  • Links conceptually with ISO 6385 (general ergonomics principles).

Applications

• Use the standard to establish a common vocabulary in:
  • Workplace risk assessments and psychosocial hazard identification.
  • Design and evaluation of work systems where cognitive or mental demands are significant (control rooms, healthcare, transport, knowledge work).
  • Occupational health guidance, training materials, and policy documents.
• Supports consistent reporting, regulatory compliance, research comparisons and interdisciplinary communication among ergonomists, safety professionals and HR teams.

Who will use this standard

• Ergonomists and human factors specialists
• Occupational health and safety managers
• Industrial/UX designers and systems engineers
• HR professionals, trainers, and organizational psychologists
• Researchers and standards developers

Related standards

• ISO 10075‑2: (measurement methods) - covers assessment methods for mental workload
• ISO 10075‑3: (task design) - covers principles of task and workplace design
• ISO 6385: general ergonomics principles

Keywords: mental workload, mental stress, mental strain, ergonomic principles, ISO 10075-1:2017, CEN, workplace design, ergonomics terminology.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2018
1DGRPHãþD
SIST EN ISO 10075-1:2002
(UJRQRPVNDQDþHODY]YH]LVSVLKLþQLPLREUHPHQLWYDPLGHO6SORãQLSRMPL
L]UD]LLQGHILQLFLMH,62
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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.

Contents Page
European foreword . 3
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.
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
ISO 10075-1:2017(E)
© 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2017 – All rights reserved

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 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

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).
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 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

ISO 10075-1:2017(E)
3.2.2.2
competence development
complex form of learning involving the acquisition, consolidation, enhanceme
...