We revisit two clinical trials that randomized depressed adults in India (n=775) to a brief course of psychotherapy or a control condition. Four to five years later, the treatment group was 11 percentage points less likely to be depressed than the control group. The more effective intervention...

Discrimination has been widely studied in economics and other disciplines. In addition to identifying evidence of discrimination, economists often categorize the source of discrimination as either taste-based or statistical. Categorizing discrimination in this way can be valuable for policy...

Sedentary lifestyles, obesity, and obesity-related chronic diseases have become increasingly common among U.S. adults, posing a major health policy challenge. While individuals may be interested in exercising more to reduce these health risks, they often have difficultly forming long-term...

This paper investigates the extent of vengeful feelings and their determinants using data on more than 89,000 individuals from 53 countries. Country characteristics (such as per-capita income, average education of the country, presence of an armed conflict, the extent of the rule-of-law,...

Economists studying public policy have generally assumed that the relevant social planner knows how policy affects population behavior. Planners typically do not possess all of this knowledge, so there is reason to consider policy formation with partial knowledge of policy impacts. Here I...

Terrorist attacks influence economic growth and individual psychology. However, identifying the direct effect of terrorism on economics and psychology is difficult because institutions also change in response to terrorist attacks. This paper controls for institutional responses to terrorist...

The purposes of this paper are to measure self-regulation, to investigate whether self-regulation differs across different health related choices, to estimate its effect on health choices and to estimate the effect of self-regulation on health-demographic gradients. The theory and empirical...

We propose a technique for assessing robustness of behavioral measures and treatment effects to experimenter demand effects. The premise is that by deliberately inducing demand in a structured way we can measure its influence and construct plausible bounds on demand-free behavior. We provide...

Religious adherence has been hard to study in part because it is hard to measure. We develop a new measure of religious adherence, which is granular in both time and space, using anonymized mobile phone transaction records. After validating the measure with traditional data, we show how it can...

Psychologists have developed effective survey methods of measuring how happy people feel at a given time. The relationship between how happy a person feels and utility is an unresolved question. Existing work in Economics either ignores happiness data or assumes that felt happiness is more or...