So, there exists a strong case – indeed, several strong cases – for concluding that happiness cannot be increased. Due to the spin of the genetic roulette wheel or the happenstance of where we were born, we are happy or not, and that is the way it is. We are ordained to go through life, skipping or trudging as the case may be.
Are we therefore done with this essay? Not at all, because the case for believing that happiness cannot be increased is not nearly as strong as we have made it seem.
For starters, ‘influenced by genetics’ does not mean immutable, and it certainly does not mean that our environment or our own actions are irrelevant. IQ is substantially influenced by genetics, much more so than happiness according to the relevant twin research, but that does not imply that education is futile or that we can ignore the dangers of prenatal trauma or infant malnutrition. Virtually everything about people is influenced by genetics, but the rest of the sentence is that virtually everything about people is also influenced by socialisation and life experience. Nature versus nurture arguments are profoundly false. We need to think instead of nature and nurture working together in complex ways.
Of course, we all adapt to pleasure, but we also adapt to our adaptation. A bowl of chocolate ice cream tastes wonderful. Five minutes later, a second bowl probably does not taste as good. But five days later, or five weeks later, or five months later, chocolate ice cream again tastes wonderful. Ditto for the other sources of pleasure in our lives.
Furthermore, happiness is not identical to sensory pleasure, and it is for such pleasure that we have the best evidence for (temporary) adaptation. It is not obvious that we so readily adapt to higher pleasures like those afforded by great art, music or natural beauty. And although pleasure is an important contributor to happiness, so too is being highly engaged in what one does, seeing meaning and purpose in one’s life, and having good relationships with one’s friends and family members (Peterson et al., 2007). Do we adapt to these important contributors to happiness? Maybe some of us do some of the time, but only in the most metaphorical manner that strains what is meant by adaptation.
Acknowledging that self-reported happiness is a relative judgement does not mean that these reports are capricious or solipsistic. Indeed, self-reports of happiness are highly reliable and agree substantially with ratings by observers, diary methods and behavioural measures such as frequency of smiling. Self-reports of happiness consistently predict objectively assessed life outcomes, like career success and longevity. And as noted, twin studies show that identical twins, even those raised apart, often agree about their respective levels of happiness, a finding that could not occur if happiness ratings reflected only the vagaries of the moment.
But perhaps the best argument for believing that happiness can be increased comes from research showing that happiness does increase. So, recent longitudinal studies by Diener et al. (2006) challenge the very idea of the hedonic treadmill. According to the hedonic treadmill, an individual’s level of happiness should be relentlessly constant across the lifespan, showing only momentary ups and downs. This is the case for some people, but for others, happiness does change in response to important life events, and it stays changed. Unemployment, divorce or disability can lastingly decrease happiness, even when someone finds a new and better job, a new and better spouse or a new and better set of abilities. Other events – like a good marriage – can lastingly increase happiness. One’s set-point (see box) can apparently be reset, but it is not much of a set-point if this is so.
Perhaps because it was so widely believed among psychologists that happiness could not be increased, there have been relatively few attempts to devise and test interventions to increase it. However, such interventions indeed work. Decades ago, Michael Fordyce (1977, 1983) developed a Personal Happiness Program and showed that it boosted the long-term satisfaction of college students. Fordyce surveyed the research literature on happiness and identified predictors presumably under the short-term control of ordinary people: for example, keeping busy; socialising with others; doing meaningful work; and making the pursuit of happiness a priority. This information was conveyed to individuals along with suggested behavioural and cognitive exercises. In seven studies that included no-treatment comparison groups, Fordyce found that self-reported happiness increased and feelings of depression decreased. Follow-up was as long as 18 months. Fordyce believed that mere exposure to what he called ‘happiness principles’ drove these effects, but we suspect that the exercises were crucial.
More recently, we have similarly shown that simple exercises can increase well-being as well as alleviate depression (Seligman et al., 2005). For example, we asked adults to count their blessings:Every night for one week, set aside 10 minutes before you go to bed. Use that time to write down three things that went really well on that day and why they went well. You may use a journal or your computer to write about the events, but it is important that you have a physical record of what you wrote. It is not enough to do this exercise in your head. The three things you list can be relatively small in importance or relatively large in importance. Next to each positive event in your list, answer the question, ‘Why did this good thing happen?’
Relative to a comparison group, happiness increased, and depression decreased. Results were maintained through six months of follow-up.
We asked other adults to use their strengths of character in novel ways. They took our character strength survey in order to identify their signature strengths of character (e.g. curiosity, humour, kindness). Then we asked them to use these strengths in their daily life:Every day for the next seven days use one of your top five strengths in a way that you have not before. You might use your strength in a new setting or with a new person. It’s your choice.
Again, relative to a comparison group, happiness increased, and depression decreased through six months of follow-up.
Neither of these techniques is akin to a crash diet or an antibiotic. To the degree that they had lasting effects, it was because people integrated them into their regular routines. Counting blessings for a week will make a person happier for that week, but only if the person becomes habitually grateful will there be a more enduring effect. In our research, we found – not surprisingly – that the people who showed lasting benefits were those who continued to use the exercises. Findings that happiness can change for individuals need not mean that the happiness levels of given societies can change. Perhaps individual-level changes are idiosyncratic, meaning that the relative gains and losses of different individuals within a given nation cancel each other out, resulting in no discernible shifts for a society in the aggregate. As we have described, research to date has supported this view – that the average life satisfaction of people in a given nation is fixed – but now this conclusion has been challenged as well.
Drawing on a unique resource – the World Values Survey – we recently published a paper showing that the happiness and life satisfaction of nations have increased in dozens of nations around the world over the past few decades (Inglehart et al., 2008).
The World Values Survey is an ambitious project that periodically surveys people around the world with respect to their attitudes, beliefs and values. Questions range from the mundane (‘Is throwing away litter ever justified?’) to the sacred (‘How often do you think about the meaning and purpose of life?’). It also asks respondents about their life satisfaction and their happiness.
The World Values Survey stands apart from similar endeavours because of the large number of nations included – dozens of different countries containing 85 per cent of the world’s population – and because respondents in each nation are representative samples. That is, they represent the range of individuals within a nation across important contrasts like age, gender, education, occupation, and the like. Most samples studied by social scientists and certainly psychologists are convenience samples, recruited by the researcher from available individuals: students in a college course, surfers on the internet, children at a local daycare centre, and so on. The hope in each case is that the convenience sample somewhat resembles the larger population to which one wishes to generalise results, but this is usually an ideal more than an actuality. Accordingly, findings from the World Values Survey are to be taken very seriously.
According to our findings, during the past two decades, both life satisfaction and happiness have increased in the majority of the 52 nations for which there were substantial data. Life satisfaction rose in 63 per cent of these societies, and happiness increased in 87 per cent of them.
What was responsible for these changes? According to our internal analyses of the data, increased perceptions of choice and control foreshadowed increased well-being. Choice and control were in turn foreshadowed by increased economic growth and democratisation of a nation.
These are dramatic patterns, and one should ask why so many social scientists for so long believed that the happiness and life satisfaction of nations do not change. Part of the reason is that the most complete data over time – other than the World Values Survey – have come from the US, and mean scores of US residents have indeed been rather flat for decades. Why that is the case is an interesting question, but in any event, the US appears to be a happiness anomaly.
Conclusions
Contrary to long-standing belief, happiness can and does increase in a lasting way, for individuals and for nations. At neither level is change simple, requiring lifestyle changes for individuals and economic and political changes for nations. We should beware glib advice of the ‘five easy steps’ variety about how to achieve and sustain happiness (Park & Peterson, in press). Happiness has desirable consequences, but at present we do not know whether deliberately cultivated happiness pays the same dividends as the naturally occurring variety. Nor do we know what it means that so many of us now live in a happier world. Will it as a result be a better world – more tolerant, more peaceful, more creative and more healthy? Will national and global changes in happiness someday produce the sorts of outcomes found at the individual level? Pessimists will say no way. We prefer to wait and see, remembering that pessimists have been wrong before about happiness