Article

# The Effects of Food Stamps on Obesity

Southern Economic Journal (Impact Factor: 0.63). 01/2011; 77(3):623-651. DOI: 10.4284/sej.2011.77.3.623

Source: RePEc

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**ABSTRACT:**With over 66% of Americans overweight, expectant mothers are unusual because they are encouraged to gain weight while pregnant. Food stamp receipt (FSR) may facilitate recommended weight gain by providing resources for food and nutrition. I examine the effects of FSR on the amount of weight gained by low-income expectant mothers using NLSY79 data. Results indicate FSR decreases the probability gaining insufficient weight but does not exacerbate the probability of gaining too much weight. Examining the effects of FSR on pregnancy weight gain is important because low birth weight is more likely when expectant mothers gain insufficient weight.Journal of Population Economics 01/2012; 25(4). · 0.92 Impact Factor - [Show abstract] [Hide abstract]

**ABSTRACT:**Bayesian analysis is given of an instrumental variable model that allows for t-distributed errors in both the structural equation and the instrument equation. Specifically, the approach for dealing with t-distributed errors is extended to the Bayesian instrumental variable estimator by modelling the variance for each error using a Gamma distributed hierarchical prior. The computation is carried out by using a Markov chain Monte Carlo sampling algorithm for the heteroskedastic case. An example using data illustrates the approach and shows that ignoring the presence of error terms with heavy tails in the instrument equation when it exists may lead to biased estimates. -

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