Australian Centre on Quality of Life

What is Quality of Life?

Quality of life is a construct with many forms of definition. The Australian Centre on Quality of Life recommends the following construction:

'Quality of life is both objective and subjective. Each of these two dimensions comprises several domains which, together, define the total construct. Objective domains are measured through culturally relevant indices of objective wellbeing. Subjective domains are measured through questions of satisfaction.'

Recommended citation:
Australian Centre on Quality of Life (2017) 'What is quality of life?' Geelong, Victoria: Deakin University.

Elaborating the Quality of Life definition

Definitional logic

A concern with life quality has driven much of evolution. For any animal, easy access to food and the avoidance of predators, facilitates reproductive fitness. So acquiring the best living environment and life quality has always been competitive. Humans have been exceptionally good at this competition and, around 60,000 years or so ago, our ancestors staged the first successful migration out of Africa. This allowed them to progressively increase their reproductive fitness by finding new habitats, developing agriculture, forming tribes with stable political allegiances, and thereby successfully populating the planet.

Principle: Quality of Life (QOL) should be defined in a way that is fundamentally at one with evolution. The definition should be applicable to all living things, from bacteria to humans.

Global QOL definition: 'Quality of life is the extent to which an organism can realise its genetic potential. In this definition, 'Potential' refers to the optimal expression of each genotype, and 'Optimal expression' refers to maximised reproductive fitness.

While this definition suffices for lower animals, it is inadequate for humans. Their adaptive capacity, coupled with welfare, makes reproductive fitness and inappropriate outcome variable. Human life quality is also a more complex construct than it is for lower animals. Humans have a dual sense of life quality. One is a proximal sense of life quality felt as a personal appraisal of oneself. The other is an appraisal of ones’ distal environment, which can be described as an objective reality.

This leads to the recommended definition:
‘Quality of life is both objective and subjective. Each of these two dimensions comprises several domains which, together, define the total construct. Objective domains are measured through culturally relevant indices of objective wellbeing. Subjective domains are measured through questions of satisfaction’.

Why use questions of satisfaction?

Prior to 1976, the few researchers who were measuring how people felt about their lives used various dependent variables. These included, for example, ‘happiness’ (Sweetser, 1850), ‘importance’ (Decker, 1955), and ‘morale’ (Cumming & Henry, 1961). Considering these in chronological sequence:

Happiness: Campbell, Converse, and Rodgers (1976) discuss the preferred use of happiness or satisfaction in questions requesting a subjective evaluation. Their specific concern is with the most appropriate term when the question moves from a broad domain (e.g. housing) to a more specific component of the domain (e.g. the heating of their home). They note that, “As we move down the ladder of abstraction from global feelings to these more specific assessments, the concept of ‘happiness’ becomes increasingly awkward, while the concept of satisfaction becomes more natural” (p.33). This observation has generally resonated with researchers, and ‘satisfaction’ has become the preferred common term for subjective QOL measurement.

Importance: It is somewhat intuitive that scales comprising questions of ‘satisfaction’ can be made more personally valid by weighting the satisfaction score for each item by the level of personal importance attributed to that item (I x S). The first researcher to empirically test this was Decker (1955) in relation to a scale of job satisfaction. He found that the weighting failed to change the correlations between the different measures of satisfaction. This failure of (IxS) to improve the statistical performance of (S) alone has since been replicated by numerous researchers (e.g. Ewen, 1967; Trauer & Mackinnon, 2001; Wu & Yao, 2007). In this instance, intuition is incorrect. There is no value in measuring ‘importance’ in addition to ‘satisfaction’.

Morale: Early researchers into life quality quite commonly use ‘morale’ as a dependent variable. However, its intended meaning is complex. As an example, Viteles (1953) states “Morale is an attitude of satisfaction with, desire to continue in, and willingness to strive for the goals of a particular group or organization" (p.284). It is evident that this definition has many parts and Locke (1976, p. 1300) observes that it differs from the concept of satisfaction in two major ways. First, morale is more future-oriented, while satisfaction is more present and past-oriented. Second, morale often has a group referent, based on a sense of common purpose and the belief that group goals can be attained which are compatible with individual goals. Satisfaction, on the other hand, typically refers to the appraisal made in reference to a single individual.

In summary, asking people how ‘satisfied’ they feel seems the most suitable choice of dependent variable for questions that refer to either abstract or specific QOL topics.


Campbell, A., Converse, P. E., & Rodgers, W. L. (1976). The quality of American life: Perceptions, evaluations, and satisfactions. Russell Sage Foundation: New York.

Cumming, E., & Henry, W. E. (1961). Growing Old. New York: Basic Books.

Decker, R. L. (1955). A study of three specific problems in the measurement and interpretation of emoloyee attitudes. Psychological monographs: General and applied, 69(16), Whole number 401.

Ewen, R. B. (1967). Weighting components of job satisfaction. Journal of Applied Psychology, 51(1), 68-73.

Locke, E. A. (1976). The nature and causes of job satisfaction. In M. D. Dunnette (Ed.), Handbook of industrial and organizational psychology (pp. 1297-1349). Chicago: Rand McNally.

Sweetser, W. (1850). Mental Hygiene (Second ed.). New York: George P. Putnam.

Trauer, T., & Mackinnon, A. (2001). Why are we weighting? The role of importance ratings in quality of life measurement. Quality of Life Research, 10, 579-585.

Viteles, M. S. (1953). Motivation and morale in industry. New York: W. W. Norton.

Wu, C. H., & Yao, G. (2007). Importance has been considered in satisfaction evaluation: An experimental examination of Locke’s range-of-affect hypothesis. Social Indicators Research, 81(3), 521-542.

About ACQol

The Australian Centre on Quality of Life (ACQol) was established to study evidence-based measures for quality of life.

ACQol formed a partnership with Australian Unity in 2001 to develop the Australian Unity Wellbeing Index - a national survey which uses several indicators to measure subjective life quality. The Centre is also home to data from the Australian Unity Longitudinal Wellbeing Study. This study follows-up the samples of Australians who respond to the annual cross-sectional surveys. ACQol also supports the International Wellbeing Group (IWbG) - an international collaborative network of researchers. The collective aim of the IWbG is to develop the Personal Wellbeing Index into a standard, cross-cultural measure of Subjective Wellbeing (SWB).

ACQol is committed to improving our understanding of life quality through both theory development and empirical research. Notable advances in understanding have been achieved through the development and evaluation of the theory of SWB homestasis, the discovery of SWB set-points, and the demonstration that SWB mainly comprises positive-activated mood (Homeostatically Protected Mood).

ACQol is committed to open-access. All reports and data resulting from the Australian Unity project, currently including 35 national, cross-sectional surveys, are freely available for download. The longitudinal data are currently being assembled into a single coherent file and will be available by the end of 2020. Cross-sectional data from other surveys are also available.

ACQol is committed to developing new research techniques and fostering collaborations with like-minded researchers. Current SWB longitudinal research within the Centre is trialling novel techniques, such as micro-longitudinal research and smartphone apps. An emerging orientation within the Centre concerns the development of valid SWB measures for children.

Our Team

Emeritus Professor Robert A. Cummins
Director, Australian Centre on Quality of Life

Professor Craig Olsson
Director, Deakin Centre for Social and Early Emotional Development

Professor Jane McGillivray
Head, School of Psychology

Dr Delyse Hutchinson
Australian Unity Senior Research Fellow

Professor Peter Enticott
Neuropsychology Consultant

Professor Nicole Rinehart
Disability Consultant

Professor John Toumbourou
Community Psychology Consultant

Dr Adrian Tomyn
Adolescence consultant

Professor Jane Speight
Health Psychology Consultant

Professor Matthew Fuller-Tyszkiewicz
Statistical Consultant

Associate Professor Mark Stokes
Statistical Consultant

Dr Anna L. D. Lau
International Research Consultant

Małgorzata Pięta
ACQol Bulletin Co-Editor - Trauma Recovery

Assistant Professor Marcin Rzeszutek
ACQol Bulletin Co-Editor - Trauma Recovery

Professor Antonina Mikocka-Walus
Health Psychology Consultant

Associate Professor Melissa Weinberg
Honorary Research Fellow

Associate Professor RoseAnne Misajon
Health Psychology Consultant

Sarah Khor
Executive Data Analyst

Celine Jona
Executive Data Analyst

Sangeetha Thomas
Membership registrar

Tanja Capic
Executive Data Analyst, Webmaster

Ann-Marie James
Executive Secretary

Josipa Crnic
Scholarly Services Librarian

Iestyn Polley
Executive Web Developer

Leanne Storey
ACQol Bulletin Co-Editor - Media

Liz Gleeson
ACQol Bulletin Co-Editor - AU Reports Directory

Ziara Alexandra Condoluci
ACQol Bulletin Co-Editor - Website Integrity

Dee (Delicia) Beayni
ACQol Bulletin Co-Editor -Theses Compendium

Kylie Dickman
ACQol Bulletin Co-Editor - Contemporary Issues

Kate Lycett
AUWI Project Lead and Senior Research Fellow

Mallery Crowe
AUWI Project Officer

Georgie Frykberg
AUWI Project Coordinator

ACQOL Collaborators

Australian Unity

Australian Unity is a mutual organisation that has been helping Australians thrive for more than 175 years in the areas of health, wealth and living. We support almost one million customers, including nearly 300,000 members nationwide, to meet their health and financial needs.

Australian Unity is proud of its 20-year partnership with Deakin University to make the Australian Unity Wellbeing Index available to academics, researchers and the general public. Australian Unity believes it makes a significant contribution to the nation's understanding of wellbeing.

For further information, you can visit the Australian Unity website at: here.

Researcher Collaborations

ACQOL also collaborates with other researchers through two consortiums: ACQOL members and the International Wellbeing Group.


Saving the Planet by Sharing Life Quality?

Our planet is dying, but yet can be saved. The reasons are self-evident to those in touch with scientific reality. An overload of pollutants and excessive deforestation are causing climate change. The uneven distribution of resources and rising underemployment are causing social unrest. The result is gross inequality in life quality experienced by the world's people.

We have the technical and material resources to reverse this downward trend. But human nature, which has served our evolution so well, now threatens our resolve. Our biology tells us, more is better, and speaks to those with resources not to share with strangers. Such instruction is suited to tribal survival. It must be countermanded to achieve a global community, sharing resources to achieve a universal life quality.

To achieve such sharing at a global level, we need a special band of leaders. People with the wisdom to rise above populist opinion and to courageously legislate for universal, rather than sectorial, survival.

Such people exist among us. They hold positions of international influence, they see the dangers of unfettered economic growth, and they offer positive solutions to our dilemma. From this exalted group two have been chosen as exemplars, both with specific reference to the global economic crisis of 2008-2009.

Jigme Thinley

Jigme Thinley served as Prime Minister of Bhutan twice, from 1998 to 1999, and from 2003 to 2004. He blames the crisis on 'insatiable human greed' and proselytises the Bhutanese notion of gross national happiness.

"The present GDP-based system ... now threatens the survival of humans and other species. At the same time ... we have the ability, for example, to feed everyone on earth healthily and sustainably. No one need go hungry!"

Thinley, 2012, pp. 10-11

Joseph Eugene Stiglitz

Joseph Eugene Stiglitz served as chief economist of the World Bank and chairman of the US president's Council of Economic Advisors. In response to the crisis, President Sarkozy of France appointed Stiglitz to chair the Commission on the Measurement of Economic Performance and Social Progress.

"... the time is ripe for our measurement system to shift emphasis from measuring economic production to measuring people's well-being"

Stiglitz, Sen, & Fitoussi, 2010, p. 12

To shift the focus of human development, from economic progress to universal life quality, requires a fundamental change in what governments strive to achieve. Essential to such change is a scientific understanding of human wellbeing. Facilitating such understanding is the purpose of the Australian Centre on Quality of Life.


Stiglitz, K., Sen, A., & Fitoussi, J.-P. (2010). Report by the commission on the measurement of economic performance and social progress. Paris: Commission on the Measurement of Economic Performance and Social Progress

Thinley, J. Y. (2012). Foreword. In Royal Government of Bhutan (Ed.), The report of the High-level meeting on wellbeing and happiness. Defining a new economic paradigm (pp. 10-11). New York: The Permanent Mission of the Kingdom of Bhutan to the United Nations. Thimphu: Office of the Prime Minister.


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