I draw systematic comparisons across 109 data files and 132 countries of the relationship between well-being, variously defined, and age. I produce 444 significant country estimates with controls, so these are ceteris paribus effects, and find evidence of a well-being U-shape in age in one...

I examine the relationship between unhappiness and age using data from six well-being data files on nearly ten million respondents across forty European countries and the United States. I use fifteen different individual characterizations of unhappiness including despair; anxiety; loneliness;...

This paper uses a variety of individual-level survey data from several countries to test for interactions between subjective well-being at different ages and variables measuring the nature and quality of the social context at work, at home, and in the community. While earlier studies have found...

To assess age-specific infection fatality rates (IFRs) for COVID-19, we have conducted a systematic review of seroprevalence studies as well as countries with comprehensive tracing programs. Age-specific IFRs were computed using the prevalence data in conjunction with reported fatalities four...

The past decade has brought increasing concern, in countries all over the world, of declines in mental health and well-being. Across countries, chronic depression and suicide rates peak in midlife. In the U.S., deaths of despair are most likely to occur in these years, and the patterns are...

In this paper, we investigate the impact of attending school on body weight and obesity. We use school starting age cutoff dates to compare weight outcomes for similar age children with different years of school exposure. As is the case with academic outcomes, school exposure is related to...

Individuals who are likely to realize the largest benefits from improvements in air quality often depend on other members of their households to make time or monetary contributions to their care. The presence of these dependency relationships among household members poses challenges for benefit...

Forty years ago, 96% of six-year-old children were enrolled in first grade or above. As of 2005, the figure was just 84%. The school attendance rate of six-year-olds has not decreased; rather, they are increasingly likely to be enrolled in kindergarten rather than first grade. This paper documents...

We estimate the effects of having more mature peers using data from an experiment where children of the same age were randomly assigned to different kindergarten classrooms. Exploiting this experimental variation in conjunction with variation in expected kindergarten entry age to account for...

During 2006, the Gallup Organization conducted a World Poll that used an identical questionnaire for national samples of adults from 132 countries. I analyze the data on life satisfaction (happiness) and on health satisfaction and look at their relationships with national income, age, and...