Robert A. Cummins

The Domains of Life Satisfaction: An Attempt to Order Chaos

While life satisfaction is commonly measured as an aggregate of individual life domains, the characterisation of such domains is uncertain. This study attempts to group 173 different domains names derived from the literature under seven headings as used by the Comprehensive Quality of Life Scale (ComQol). It was found that 68% could be classified in this way. Moreover, due to the repeated use of some domain names, the ComQol classification included 83% of the total reported data. The ComQol domain data did not differ from single-item global measures of life satisfaction and the within-study variance was lower using the ComQol rather than the original domains. A hierarchy of domain satisfaction was found which was dominated by the domain of intimacy. The other ComQol domains were quite tightly clustered within a range of 1.08 standard deviations. No difference was found between normative data and data gathered from people with a chronic medical condition, but people selected on psychiatric criteria had a lower life quality, most particularly in the domain of intimacy. It is concluded that life satisfaction, and therefore subjective well-being, can be economically and validly measured through the seven ComQol domains.

Developing a National Index of Subjective Wellbeing: The Australian Unity Wellbeing Index

The Australian Unity Wellbeing Index has beendesigned as a new barometer of Australianssatisfaction with their lives, and life inAustralia. It is based on, and develops, thetheoretical model of subjective wellbeinghomeostasis. The Index comprises two sub-scalesof Personal and National Wellbeing. Data werecollected through a nationally representativesample of 2,000 people in April/May 2001.Factor analysis confirmed the integrity of thetwo sub-scales and, confirming empiricalexpectation, the average level of lifesatisfaction was 75.5 percent of the scalemaximum score. Group comparisons revealed thatall age groups maintained their Personal Indexscore within the normal range. In addition,people in country areas were more satisfiedwith their personal lives than city-dwellers,but less satisfied about the nationalsituation, and people who had recentlyexperienced a strong positive event evidenced arise in wellbeing, whereas those who hadexperienced a strong negative event evidencedwellbeing in the low-normal range. It is arguedthat these data generally support homeostatictheory. However, an unusual result was thatfemales were more satisfied with their ownlives than males. A tentative argument isadvanced that this may represent aconstitutional difference. It is concluded thatthe Australian Unity Wellbeing Index haspotential as a valid, reliable and sensitiveinstrument to monitor national wellbeing.

Quality of life indexes for national policy: review and agenda for research

A number of governments and public policy institutes have developed “Quality of Life Indexes” – statistics that attempt to measure the quality of life for entire states or regions. We develop 14 criteria for determining the validity and usefulness of such QOL indexes to public policy. We then review 22 of the most-used QOL indexes from around the world. We conclude that many of the indexes are successful in that they are reliable, have established time series measures, and can be disaggregated to study subpopulations. However, many fall short in four areas: (1) indexes vary greatly in their coverage and definitions of domains of QOL, (2) none of the indexes distinguish among the concepts of input, throughput, and output that are used by public policy analysts, (3) they fail to show how QOL outputs are sensitive to public policy inputs, and (4) none have examined convergent validity against each other. We conclude that many of these indexes are potentially very useful for public policy and recommend research to further improve them.

Objective and Subjective Auality of Life: an Interactive Model

This paper reviews the relationship between objective and subjective quality of life indicators. It proposes that the interaction of these variables occurs within a system that homeostatically maintains subjective quality of life within a narrow range. Due to the capacity of this system to adapt to varying environmental circumstances, the objective and subjective indicators are normally poorly correlated. However, it is also proposed that very poor objective conditions can defeat homeostasis and, once this occurs, the objective and subjective indicators display stronger covariation. Empirical data are provided to support this model and the implications for understanding the QOL construct are discussed.

Conceptualization, Measurement, and Application of Quality of Life for Persons With Intellectual Disabilities: Report of an International Panel of Experts

In this article a number of issues involving the concept of quality of life as applied to persons with intellectual disabilities are summarized, and a number of agreed-upon principles regarding its conceptualization, measurement, and application are presented. We realize that the concepts and models presented in this article will vary potentially from country to country, and even from area to area within countries. The cross-cultural understanding of the concept of quality of life is in its infancy, and we hope that the discourses resulting from the material presented in this article will facilitate both cross-cultural understanding and collaborative work. The article reflects current thought about the conceptualization, measurement, and application of this increasingly important and widely used concept in the field of intellectual disabilities and sets the stage for its continuing development.

Maintaining life satisfaction: the role of positive cognitive bias

Recent research into population standards of life satisfaction has revealed a remarkable level of uniformity, with the mean values for Western populations clustering at around three-quarters of the measurement scale maximum. While this seems to suggest the presence of a homeostatic mechanism for life satisfaction, the character of such a hypothetical device is uncertain. This paper proposes that well-being homeostasis is controlled by positive cognitive biases pertaining to the self. Most particular in this regard are the positive biases in relation to self-esteem, control and optimism. Past controversies in relation to this proposition are reviewed and resolved in favour of the proposed mechanism. The empirical data to support this hypothesis are discussed in the context of perceived well-being as an adaptive human attribute.

On the Trail of the Gold Standard for Subjective Well-Being

The absence of a ‘gold standard’ for subjective well-being has severely hampered the interpretation of data from empirical studies. This paper demonstrates a remarkable consistency among the results of 16 studies that have investigated ‘life satisfaction’ among large samples drawn from the general population. It is concluded that a population standard for ‘life satisfaction’ can be expressed as 75.0±2.5 percent of the measurement scale maximum score.

Personal Income and Subjective Well-being: A Review

Conventional wisdom holds that money has little relevance to happiness. This review will demonstrate quite the opposite is true and will argue that case using the Homeostatic Theory of Subjective Well-Being (SWB). Homeostatic theory proposes that SWB is held within a narrow range determined by personality. Experience with the environment also impacts on this system but its influence is attenuated by two sets of buffers. The internal buffers comprise beliefs in perceived control, self-esteem, and optimism. The external buffers comprise resources, such as personal assistance, that ameliorate the impact of potentially negative events. This model predicts significantly different levels of SWB for people who are rich, people on average Western incomes, and people who are poor. Data are provided that support this prediction. It is concluded that money buys happiness to the extent that external resources permit optimal functioning of the SWB homeostatic system.

Normative Life Satisfaction: Measurement Issues and a Homeostatic Model

Previous studies have established that, when life satisfaction is measured over a range from 0 to 100 the mean scores of Western populations average 75 ± 2.5. The consistency of these data has given rise to the idea that life satisfaction may be held under homeostatic control. This paper further investigates this hypothesis by examining the distribution of data within populations. It also examines these data with a view to elucidating various methodological issues regarding life satisfaction measurement. In terms of the methodological issues it is concluded that measurement is best achieved using bi-directional Likert scales with at least 11 choice points. It is also determined that the life satisfaction of Western populations did not change over the decade 1980–1990, and that data derived from college students cannot be validly employed as proxy general population data. In terms of data distribution, it is calculated that the normal range of life satisfaction within Western populations lies within the range 40 to 100. The consistency of this non-normal distribution is argued to be further evidence that life satisfaction is held under homestatic control, and a descriptive model is proposed.

A model of subjective well-being homeostasis: the role of personality

A considerable body of data is now available to suggest that subjective well-being (SWB) is not free to vary over the theoretical range offered by measurement scales. Rather, most people experience a moderately positive level of well-being, such that the population average is normally held at about 75 percent of maximum. This has led to the proposal that SWB is under the influence of a homeostatic system designed to hold its value within a narrow, positive, set-point-range for each individual. Our paper offers a model that could account for such maintenance through an interlocking system of psychological devices as follows: (a) Personality provides a steady affective background that determines the set-pointrange for the whole homeostatic system. (b) A set of cognitive buffers involving perceived control, self-esteem and optimism, absorb the impact of different need states and, together with personality, create subjective well-being (c) Met and unmet needs act directly on the cognitive buffers, with the met needs reinforcing the buffering system and the unmet needs providing motivation. Personality is also presented as having a powerful influence on motivational systems that seek satisfaction and, thus, predispose behavior that is likely to maintain normal levels of SWB. (d) Finally, at the most fundamental level of the homeostatic system, the processes of habituation and adaptation constitute the first line of defence against the threat of changed extrinsic conditions influencing levels of SWB. Data are cited in support of all levels of the model and the implications of homeostatic control are discussed. In particular, depression is described in terms of homeostatic failure, and the limitation of using SWB as a measure of intervention outcome is emphasized. That is, interventions can only raise SWB if its initial levels were below the setpoint-range. It is concluded that the model is consistent with a great deal of the literature and that testing its many propositions should prove a fruitful approach to advancing knowledge in this area.