NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

NBER Publications by David E. Frisvold

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Working Papers and Chapters

August 2015The Impact of Social Security Income on Cognitive Function at Older Ages
with Padmaja Ayyagari: w21484
Prior literature has documented a positive association between income and cognitive function at older ages, however, the extent to which this association represents causal effects is unknown. In this study, we use an exogenous change in Social Security income due to amendments to the Social Security Act in the 1970s to identify the causal impact of Social Security income on cognitive function of elderly individuals. We find that higher benefits led to significant improvements in cognitive function and that these improvements in cognition were clinically meaningful. Our results suggest that interventions even at advanced ages can slow the rate of decline in cognitive function.
The Incidence of Taxes on Sugar-Sweetened Beverages: The Case of Berkeley, California
with John Cawley: w21465
One of the most commonly-proposed policies to address the high prevalence of obesity is a tax on energy-dense foods, in particular sugar-sweetened beverages (SSBs). This is based on the assumption that such taxes are largely passed through to consumers in the form of higher retail prices, leading to reduced consumption. However, relatively little is known about the extent to which taxes on SSBs are in fact passed through to consumers. We estimate the pass-through of the first city-level tax on SSBs in the U.S., which was enacted by the voters of Berkeley, California in November, 2014. We collected the prices of various brands and sizes of SSBs and other beverages before and after the implementation of the tax from a near-census of convenience stores and supermarkets in Berkeley, Califo...
August 2012The Impact of Physical Education on Obesity among Elementary School Children
with John Cawley, Chad Meyerhoefer: w18341
In response to the dramatic rise in childhood obesity, the Centers for Disease Control (CDC) and other organizations have advocated increasing the time that elementary school children spend in physical education (PE) classes. However, little is known about the effect of PE on child weight. This paper measures that effect by instrumenting for child PE time with state policies, using data from the Early Childhood Longitudinal Study, Kindergarten Cohort (ECLS-K) for 1998-2004. Results from IV models indicate that PE lowers BMI z-score and reduces the probability of obesity among 5th graders (in particular, boys), while the instrument is insufficiently powerful to reliably estimate effects for younger children. This represents some of the first evidence of a causal effect of PE on youth obesit...

Published: Cawley, John, David Frisvold, and Chad Meyerhoefer. "The Impact of Physical Education on Obesity among Elementary School Children." Journal of Health Economics, 2013, 32(4): 743-755. citation courtesy of

Contact and additional information for this authorAll NBER papers and publicationsNBER Working Papers onlyInformation about this author at RePEc

 
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