Farmland Rental Prices in GM Soybean Areas of Argentina: Do Contractual Arrangements Matter?

In this paper we study the determinants of the rental price of farmland in the Argentinian Pampas. In particular, we examine the price of lease contracts using a hedonic price model, while controlling for other potential sources of variation. Using firsthand data for 255 plots, our results indicate that both short-term contracts and contracts with sowing pools push rental prices upwards. We also find that soybean yields have a significant impact on land rental prices. These results suggest that if Argentina intends to protect the enormous natural advantage it has for agricultural production, it should consider strictly regulating land rental contracts.     

International relations: the dawn of a historiographical turn?

Books reviewed in this article:
Donnelly, Jack, Realism in International Relations
Dunne, Tim, Inventing International Society: A History of the English School
Schmidt, Brian, The Political Discourse of Anarchy: A Disciplinary History of International Relations
Tuck, Richard, The Rights of War and Peace: Political Thought and the International Order from Grotius to Kant     

Serendipitous Intervention: Qualitative Findings from the Study of Dynamic Patterns of Husband-to-Wife Abuse

This mixed methods study observed day-to-day dynamics of husband-to-wife abuse. Daily reporting and weekly interaction with a research associate appeared to offer great benefit. A sample of 20 women age 20–62, were enrolled. Participants at high risk for abuse were excluded. Women who met the inclusion criteria completed a baseline questionnaire. Participants were instructed to complete a daily telephone assessment for 60 days to track the prior day’s abuse severity and potential violence predictors. Participants also completed a qualitative end-of-study interview. Women reported an increased awareness of community resources, heightened self-esteem and coping empowerment. Seven women (35 %) left their abusive relationships. Women who left were more educated but had lower socio-economic status (SES). Participants in common-law marriages were also more likely to leave. The unforeseen consequences of daily reporting coupled with regular contact with an engaged listener were positively associated with a woman’s readiness for change.     

Using the Results from Rigorous Multisite Evaluations to Inform Local Policy Decisions

Evidence‐based policy at the local level requires predicting the impact of an intervention to inform whether it should be adopted. Increasingly, local policymakers have access to published research evaluating the effectiveness of policy interventions from national research clearinghouses that review and disseminate evidence from program evaluations. Through these evaluations, local policymakers have a wealth of evidence describing what works, but not necessarily where. Multisite evaluations may produce unbiased estimates of the average impact of an intervention in the study sample and still produce inaccurate predictions of the impact for localities outside the sample for two reasons: (1) the impact of the intervention may vary across localities, and (2) the evaluation estimate is subject to sampling error. Unfortunately, there is relatively little evidence on how much the impacts of policy interventions vary from one locality to another and almost no evidence on the implications of this variation for the accuracy with which the local impact of adopting an intervention can be predicted using findings from an evaluation in other localities. In this paper, we present a set of methods for quantifying the accuracy of the local predictions that can be obtained using the results of multisite randomized trials and for assessing the likelihood that prediction errors will lead to errors in local policy decisions. We demonstrate these methods using three evaluations of educational interventions, providing the first empirical evidence of the ability to use multisite evaluations to predict impacts in individual localities—i.e., the ability of “evidence‐based policy” to improve local policy.     

The Effect of Medical Marijuana Laws on the Health and Labor Supply of Older Adults: Evidence from the Health and Retirement Study

Older adults are at elevated risk of reducing labor supply due to poor health, partly because of high rates of symptoms that may be alleviated by medical marijuana. Yet, surprisingly little is known about how this group responds to medical marijuana laws (MMLs). We quantify the effects of state medical marijuana laws on the health and labor supply of adults age 51 and older, focusing on the 55 percent with one or more medical conditions with symptoms that may respond to medical marijuana. We use longitudinal data from the Health and Retirement Study to estimate event study and differences‐in‐differences regression models. Three principle findings emerge from our analysis. First, active state medical marijuana laws lead to lower pain and better self‐assessed health among older adults. Second, state medical marijuana laws lead to increases in older adult labor supply, with effects concentrated on the intensive margin. Third, the effects of MMLs are largest among older adults with a health condition that would qualify for legal medical marijuana use under current state laws. Findings highlight the role of health policy in supporting work among older adults and the importance of including older adults in assessments of state medical marijuana laws.