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  • 1
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    Do Neighborhood Parks and Playgrounds Reduce Childhood Obesity? (2014)
    Oxford University Press
    Details
    Publication Date: 2014-01-22
    Description: Using the 2007 National Survey of Children's Health data, we find a statistically and economically significant effect of neighborhood parks and playgrounds on childhood obesity based on covariate matching estimators. The park/playground effect depends on gender, age, race, household income, neighborhood safety, and other neighborhood amenities. The results suggest that adding a neighborhood park/playground may reduce the obesity rate and make children more fit, but relevant interventions must consider socioeconomic status of the targeted children as well as other neighborhood amenities.
    Keywords: I18 - Government Policy ; Regulation ; Public Health, I38 - Government Policy ; Provision and Effects of Welfare Programs, R53 - Public Facility Location Analysis ; Public Investment and Capital Stock
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 2
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    The Economics of Information, Deep Capture, and the Obesity Debate (2014)
    Oxford University Press
    Details
    Publication Date: 2014-03-21
    Description: The economic theory of regulatory capture predicts that industry groups will attempt to influence their regulators (for example, by lobbying for rules that exclude competition). It has been suggested that the same logic applies to any powerful institution with the ability to affect industry profits. When the aim of industry is to alter the public’s perception of its product (for example, by disseminating favorable messages to the news media or via an advertising campaign, or by funding industry-friendly scientific research), the end result has been dubbed deep capture. We develop a formal model of deep capture, in which consumers have imperfect information about product quality, and a dominant producer is able to increase his profits by altering the parameters of the consumer’s search problem. We demonstrate the empirical relevance of the phenomenon with a discussion of the food industry response to the obesity epidemic.
    Keywords: D18 - Consumer Protection, D83 - Search ; Learning ; Information and Knowledge ; Communication ; Belief, I18 - Government Policy ; Regulation ; Public Health, L15 - Information and Product Quality ; Standardization and Compatibility, L51 - Economics of Regulation
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 3
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    Sub-therapeutic Antibiotics and the Efficiency of U.S. Hog Farms (2014)
    Oxford University Press
    Details
    Publication Date: 2014-04-05
    Description: A substantial share of U.S. hog producers incorporate antimicrobial drugs into their livestock's feed or water at sub-therapeutic levels to promote feed efficiency and weight gain. Recently, in response to concerns that the overuse of antibiotics in livestock could promote the development of antimicrobial drug-resistant bacteria, the U.S. Food and Drug Administration adopted a strategy to phase out the use of antibiotics for production purposes. This study uses a stochastic frontier model and data from the 2009 USDA Agricultural Resource Management Survey of feeder-to-finish hog producers to estimate the potential effects on hog output and output variability resulting from a ban on antibiotics used for growth promotion. We use propensity score nearest neighbor matching to create a balanced sample of sub-therapeutic antibiotic (STA) users and nonusers. We estimate the frontier model for the pooled sample and separately for users and non-users—which allows for a flexible interaction between STA use and the production technology. Point estimates for the matched sample indicate that STA use has a small positive effect on productivity and production risk, increasing output by 1.0–1.3% and reducing the standard deviation of unexplained output by 1.4%. The results indicate that improvements in productivity resulted exclusively from technological improvement rather than from an increase in technical efficiency.
    Keywords: D24 - Production ; Cost ; Capital and Total Factor Productivity ; Capacity, I18 - Government Policy ; Regulation ; Public Health, Q12 - Micro Analysis of Farm Firms, Farm Households, and Farm Input Markets, Q18 - Agricultural Policy ; Food Policy
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 4
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    Futures Prices in Supply Analysis: Are Instrumental Variables Necessary? (2014)
    Oxford University Press
    Details
    Publication Date: 2014-12-13
    Description: Crop yield shocks are partially predictable—high planting-time futures prices have tended to indicate that yield would be below trend. As a result, regressions of total caloric production on futures prices produce estimates of the supply elasticity that are biased downwards by up to 75%. Regressions of the world’s growing area on futures prices have a much smaller bias of about 20% because although yield shocks are partially predictable, this predictability has a relatively small effect on land allocation. We argue that the preferred method for estimating the crop supply elasticity is to use regressions of growing area on futures prices and to include the realized yield shock as a control variable. An alternative method for bias reduction is to use instrumental variables (IVs). We show that the marginal contribution of an IV to bias reduction is small—IVs are not necessary for futures prices in supply analysis.
    Keywords: Q11 - Aggregate Supply and Demand Analysis ; Prices
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 5
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    Maximum Likelihood Estimation of the Standard Commodity Storage Model: Evidence from Sugar Prices (2014)
    Oxford University Press
    Details
    Publication Date: 2014-12-13
    Description: We present a Maximum Likelihood estimator for the standard commodity storage model with stockouts, based on prices only. While it imposes no additional assumptions on the model, the Maximum Likelihood estimator has small sample properties superior to those of the Pseudo Maximum Likelihood approach. We provide a proof that is crucial for applying our estimator to the model with normal harvests and possibly unbounded prices, thereby eliminating an inconsistency in the empirical storage model literature. Applying our Maximum Likelihood estimator to a series of annual sugar prices from 1921 to 2009 provides new evidence for the empirical relevance of the standard storage model. Our results imply a cutoff price at which discretionary stocks go to zero, which is higher than the price obtained by applying the Pseudo Maximum Likelihood estimator to the same data. The implied frequency of stockouts is lower, and price correlations, skewness, and kurtosis implied by the model closely match those seen in the annual sugar price data. We find the price of sugar to be highly responsive to small changes in consumption. When inventories are not available to buffer the effects of negative supply shocks on consumption, prices must increase sharply to induce the consumption changes needed to clear the market. Our results show why production shocks are not necessarily aligned with price spikes; the same production shock can give rise to very different price responses, depending on whether or not there are sufficient stocks to buffer its impact.
    Keywords: C51 - Model Construction and Estimation, C52 - Model Evaluation and Selection, Q11 - Aggregate Supply and Demand Analysis ; Prices
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 6
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    Wine Prices and Quality Ratings: A Meta-regression Analysis (2014)
    Oxford University Press
    Details
    Publication Date: 2014-12-13
    Description: This article examines the empirical support for the hypothesized hedonic theoretical relation between the price of wine and its quality. The examination considers over 180 hedonic wine price models developed over 20 years, covering many countries. The research identifies that the relation between the price of wine and its sensory quality rating is a moderate partial correlation of +0.30. This correlation exists despite the lack of information held by consumers about a wine's quality and the inconsistency of expert tasters when evaluating wines. The results identify a moderate price-quality correlation, which suggests the existence of strategic buying opportunities for better informed consumers. Strategic price setting possibilities may also exist for wine producers given the incomplete quality information held by consumers. The results from the meta-regression analysis point to the absence of any publication bias, and attribute the observed asymmetry in estimates to study heterogeneity. The analysis suggests the observed heterogeneity is explained by the importance of a wine's reputation, the use of the 100-point quality rating scale, the analysis of a single wine variety/style, and the employed functional form. The most important implication from the analysis is the relative importance of a wine's reputation over its sensory quality, inferring that producers need to sustain the sensory quality of a wine over time to extract appropriate returns. The reputation of the wine producer is found not to influence the strength of the price-quality relationship. This finding does not contradict the importance of wine producer reputation in directly influencing prices.
    Keywords: C21 - Cross-Sectional Models ; Spatial Models ; Treatment Effect Models, Q11 - Aggregate Supply and Demand Analysis ; Prices
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 7
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    Crop Supply Dynamics and the Illusion of Partial Adjustment (2014)
    Oxford University Press
    Details
    Publication Date: 2014-09-02
    Description: We use field-level data to estimate the response of corn and soybean acreage to price shocks. Our sample contains more than 8 million observations derived from satellite imagery and includes every cultivated field in Iowa, Illinois, and Indiana. We estimate that aggregate crop acreage responds more to price shocks in the short run than in the long run, and we show theoretically how the benefits of crop rotation generate this response pattern. In essence, farmers who change crops due to a price shock have an incentive to switch back to the previous crop to capture the benefits of crop rotation. Our result contradicts the long-held belief that agricultural supply responds gradually to price shocks through partial adjustment. We would not have obtained this result had we used county-level panel data. Standard econometric methods applied to county-level data produce estimates consistent with partial adjustment. We show that this apparent partial adjustment is illusory, and we demonstrate how it arises from the fact that fields in the same county are more similar to each other than to fields in other counties. This result underscores the importance of using models with appropriate micro-foundations and cautions against inferring micro-level rigidities from inertia in aggregate panel data. Our preferred estimate of the own-price long-run elasticity of corn acreage is 0.29, and the cross-price elasticity is –0.22. The corresponding elasticities for soybean acreage are 0.26 and –0.33. Our estimated short-run elasticities are 37% larger than their long-run counterparts.
    Keywords: Q11 - Aggregate Supply and Demand Analysis ; Prices
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 8
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    The Short-Run Impact of the Healthy Incentives Pilot Program on Fruit and Vegetable Intake (2014)
    Oxford University Press
    Details
    Publication Date: 2014-09-02
    Description: In response to low consumption levels of fruits and vegetables by Supplemental Nutrition Assistance Program (SNAP) participants, the USDA Food and Nutrition Service created the Healthy Incentives Pilot (HIP) to test the efficacy of providing a 30% incentive for purchases of targeted fruits and vegetables (TFVs). Four to six months after implementation, mean daily TFV intake for adult HIP participants was 0.22 cup-equivalents higher (24% higher) than for control-group SNAP participants. These impact estimates with a random-assignment research design generally agree with previously published nonexperimental elasticity estimates, which imply that a pure price reduction of 30% would increase fruit and vegetable consumption by about 20%.
    Keywords: I18 - Government Policy ; Regulation ; Public Health, I38 - Government Policy ; Provision and Effects of Welfare Programs
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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