We study the effect of financial resources on decision-making. Low-income U.S. households are randomly assigned to receive an online survey before or after payday. The survey collects measures of cognitive function and administers risk and intertemporal choice tasks. The study design generates variation in cash, checking and savings balances, and expenditures. Before-payday participants behave as if they are more present-biased when making intertemporal choices about monetary rewards but not when making intertemporal choices about non-monetary real-effort tasks. Nor do we find before-after differences in risk-taking, the quality of decision-making, the performance in cognitive function tasks, or in heuristic judgments.
SignificanceEducational policies may increase or decrease health differences, depending on whether they reinforce or counteract gene-related differences. We investigate whether one such policy affected health differently for people with different genetic backgrounds. We find that the additional education generated by the policy benefited those with higher genetic risk of obesity the most, reducing the gap in unhealthy body size between those in the top and bottom terciles of genetic risk of obesity from 20 to 6 percentage points. Our results challenge the notion of genetic determinism and underscore the role that social policy can have in mitigating possible health differences arising from genetic background.
Although previous research has not always found that boys and girls are treated differently in rural India, son-biased stopping rules imply that estimates of the effect of gender on parental investments are likely to be biased because girls systematically end up in larger families. We propose a novel identification strategy for overcoming this bias. We document that boys receive significantly more childcare time than girls. In addition boys are more likely to be breastfed longer, and to be given vaccinations and vitamin supplementation. We then present suggestive evidence that the differential treatment of boys is neither due to their greater needs nor to the effect of anticipated family size.
Previous research has not always found that boys and girls are treated differently in rural India. However estimates of the effect of gender on parental investments could be biased if girls end up in larger families due to son-biased stopping rules. Using a novel identification strategy that exploits that gender at conception is random, we document that boys receive more childcare time than girls, they are breastfed longer and they get more vitamin supplementation. Compared to other developing countries, boys have an advantage in height and weight relative to girls. Neither greater needs nor anticipated family size explain the results.
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AbstractWe use data from a unique survey of members of drug-trafficking gangs in favelas (slums) of Rio de Janeiro, Brazil, to characterize drug-trafficking jobs and study the selection into gangs, analyzing what distinguishes gang-members from other youth living in favelas. We also estimate wage regressions for gang-members and examine their career path: age at entry, progression within the gangs' hierarchy, and short-to medium-term outcomes. Individuals from lower socioeconomic background and with no religious affiliation have higher probability of joining a gang, while those with problems at school and early use of drugs join the gang at younger ages. Wages within the gang do not depend on education, but are increasing with experience and involvement in gang-related violence. The two-year mortality rate in the sample of gang-members reaches 20%, with the probability of death increasing with initial involvement in gang violence and with personality traits associated with unruliness.
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