Social and Behavioral Sciences Commons^™

Small Individual Loans And Mental Health: A Randomized Controlled Trial Among South African Adults, Lia C. H. Fernald, Rita Hamad, Dean Karlan, Emily J. Ozer, Jonathan Zinman

Dartmouth Scholarship

Background: In the developing world, access to small, individual loans has been variously hailed as a poverty-alleviation tool – in the context of "microcredit" – but has also been criticized as "usury" and harmful to vulnerable borrowers. Prior studies have assessed effects of access to credit on traditional economic outcomes for poor borrowers, but effects on mental health have been largely ignored.

Methods: Applicants who had previously been rejected (n = 257) for a loan (200% annual percentage rate – APR) from a lender in South Africa were randomly assigned to a "second-look" that encouraged loan officers to approve their …

Is American Health Care Uniquely Inefficient?, Alan M. Garber, Jonathan Skinner

Dartmouth Scholarship

No abstract provided.

Credit Elasticities In Less-Developed Economies: Implications For Microfinance, Dean S. Karlan, Jonathan Zinman

Dartmouth Scholarship

Policymakers often prescribe that microfinance institutions increase interest rates to eliminate their reliance on subsidies. This strategy makes sense if the poor are rate insensitive: then microlenders increase profitability (or achieve sustainability) without reducing the poor's access to credit. We test the assumption of price inelastic demand using randomized trials conducted by a consumer lender in South Africa. The demand curves are downward sloping, and steeper for price increases relative to the lender's standard rates. We also find that loan size is far more responsive to changes in loan maturity than to changes in interest rates, which is consistent with …

Information Aggregation In Polls, John Morgan, Phillip C. Stocken

Dartmouth Scholarship

We study information transmission via polling. A policymaker polls constituents, who differ in their information and ideology, to determine policy. Full revelation is an equilibrium in a poll with a small sample, but not with a large one. In large polls, full information aggregation can arise in an equilibrium where constituents endogenously sort themselves into centrists, who respond truthfully, and extremists, who do not. We find polling statistics that ignore strategic behavior yield biased estimators and mischaracterize the poll's margin of error. We construct estimators that account for strategic behavior. Finally, we compare polls and elections.

Planning And Financial Literacy: How Do Women Fare?, Annamaria Lusardi, Olivia S. Mitchell

Dartmouth Scholarship

Many older US households have done little or no planning for retirement, and there is a substantial population that seems to undersave for retirement. Of particular concern is the relative position of older women, who are more vulnerable to old-age poverty due to their longer longevity. This paper uses data from a special module we devised on planning and financial literacy in the 2004 Health and Retirement Study. It shows that women display much lower levels of financial literacy than the older population as a whole. In addition, women who are less financially literate are also less likely to plan …

Preference Heterogeneity And Insurance Markets: Explaining A Puzzle Of Insurance, David M. Cutler, Amy Finkelstein, Kathleen Mcgarry

Dartmouth Scholarship

No abstract provided.

Productivity Spillovers In Healthcare: Evidence From The Treatment Of Heart Attacks, Amitabh Chandra, Douglas O. Staiger

Dartmouth Scholarship

A large literature in medicine documents variation across areas in the use of surgical treatments that is unrelated to outcomes. Observers of this phenomena have invoked “flat of the curve medicine” to explain these facts, and have advocated for reductions in spending in high-use areas. In contrast, we develop a simple Roy model of patient treatment choice with productivity spillovers that can generate the empirical facts. Our model predicts that high-use areas will have higher returns to surgery, better outcomes among patients most appropriate for surgery, and worse outcomes among patients least appropriate for surgery, while displaying no relationship between …

Mechanistic Home Range Models And Resource Selection Analysis: A Reconciliation And Unification, Paul R. Moorcroft, Alex Barnett

Dartmouth Scholarship

In the three decades since its introduction, resource selection analysis (RSA) has become a widespread method for analyzing spatial patterns of animal relocations obtained from telemetry studies. Recently, mechanistic home range models have been proposed as an alternative framework for studying patterns of animal space-use. In contrast to RSA models, mechanistic home range models are derived from underlying mechanistic descriptions of individual movement behavior and yield spatially explicit predictions for patterns of animal space-use. In addition, their mechanistic underpinning means that, unlike RSA, mechanistic home range models can also be used to predict changes in space-use following perturbation. In this …

Using Built Environment Characteristics To Predict Walking For Exercise, Gina S. Lovasi, Anne V. Moudon, Amber L. Pearson, Philip M. Hurvitz, Eric B. Larson, David S. Siscovick, Ethan M. Berke

Dartmouth Scholarship

Environments conducive to walking may help people avoid sedentary lifestyles and associated diseases. Recent studies developed walkability models combining several built environment characteristics to optimally predict walking. Developing and testing such models with the same data could lead to overestimating one's ability to predict walking in an independent sample of the population. More accurate estimates of model fit can be obtained by splitting a single study population into training and validation sets (holdout approach) or through developing and evaluating models in different populations. We used these two approaches to test whether built environment characteristics near the home predict walking for …

Switching Language Switches Mind: Linguistic Effects On Developmental Neural Bases Of ‘Theory Of Mind’, Chiyoko Kobayashi, Gary H. Glover, Elise Temple

Dartmouth Scholarship

Theory of mind (ToM)—our ability to predict behaviors of others in terms of their underlying intentions—has been examined through false-belief (FB) tasks. We studied 12 Japanese early bilingual children (8−12 years of age) and 16 late bilingual adults (18−40 years of age) with FB tasks in Japanese [first language (L1)] and English [second language (L2)], using fMRI. Children recruited more brain regions than adults for processing ToM tasks in both languages. Moreover, children showed an overlap in brain activity between the L1 and L2 ToM conditions in the medial prefrontal cortex (mPFC). Adults did not show such a convergent activity …

Do Buyer-Size Discounts Depend On The Curvature Of The Surplus Function? Experimental Tests Of Bargaining Models, Hans-Theo Normann, Bradley J. Ruffle, Christopher M. Snyder

Dartmouth Scholarship

A number of recent theoretical papers have shown that, for buyer‐size discounts to emerge in a bargaining model, the total surplus function over which parties bargain must have certain nonlinearities. We test the theory in an experimental setting in which a seller bargains with a number of buyers of different sizes. Nonlinearities in the surplus function are generated by varying the shape of the seller's cost function. Consistent with the theory, we find that quantity discounts emerge only in the case of increasing marginal cost, corresponding to a concave surplus function. We provide additional structural estimates to help identify the …

Evolutionism And Historical Particularism At The St. Petersburg Museum Of Anthropology And Ethnography, Sergei Kan

Dartmouth Scholarship

The paper describes the early 20th century debates between several leading Russian anthropologists, including Lev Shternberg, on the best way of displaying artifacts in the newly refurbished Museum of Anthropology and Ethnology in St. Petersburg. These debates revealed major tensions and contradictions between evolutionism and historical particularism, as well as universalism and nationalism within Russian anthropology of that era.

Gerrymanders And Theories Of Law Making: A Study Of Legislative Redistricting In Illinois, Michael C. Herron, Alan E. Wiseman

Dartmouth Scholarship

Redistricting politics in Illinois provide a novel opportunity for testing competing theories of law making. With this in mind, we demonstrate that the post-2000 Census redistricters in Illinois, dominated by Democrats, strategically reshuffled district demographic profiles in an attempt to convert relatively liberal Republican districts to conservative Democratic districts in the state Senate while decreasing and increasing the ideological diversity of the Democrats and Republicans, respectively, in the House. Such reshufflings suggest that legislative politics in Illinois are conducted in a manner consistent with vote-buying theories of coalition formation.

Education And The Age Profile Of Literacy Into Adulthood, Elizabeth Cascio, Damon Clark, Nora Gordon

Dartmouth Scholarship

American teenagers perform considerably worse on international assessments of achievement than do teenagers in other high-income countries. This observation has been a source of great concern since the first international tests were administered in the 1960s. But does this skill gap persist into adulthood? We examine this question using the first international assessment of adult literacy, conducted in the 1990s. We find that, consistent with other assessments of the school-age population, U.S. teenagers perform relatively poorly, ranking behind teenagers in the twelve other rich countries surveyed. However, by their late twenties, Americans compare much more favorably to their counterparts abroad: …

Will The Stork Return To Europe And Japan? Understanding Fertility Within Developed Nations, James Feyrer, Bruce Sacerdote, Ariel Dora Stern

Dartmouth Scholarship

We seek to explain the differences in fertility rates across high-income countries by focusing on the interaction between the increasing status of women in the workforce and their status in the household, particularly with regards to child care and home production. We observe three distinct phases in women's status generated by the gradual increase in women's workforce opportunities. In the earliest phase, characteristic of the 1950s and 1960s in the United States, women earn low wages relative to men and are expected to shoulder all of the child care at home. As a result, most women specialize in home production …