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Misreporting month of birth: Implications for nutrition research
Height-for-age z-scores (HAZs) and stunting status (HAZ<−2) are widely used to measure child nutrition and population health. However, accurate measurement of age is nontrivial in populations with low levels of literacy and numeracy, limited use of formal birth records, and weak cultural norms surrounding birthdays and calendar use. In this paper we use Demographic and Health Surveys data from 62 countries over the period 1990–2014 to describe two statistical artifacts indicative of misreporting of age. The first artifact consists of lower HAZs for children reported to be born earlier in each calendar year (resulting in implausibly large HAZ gaps between January- and December-born childr...
The Oxford Handbook of Community Singing
"The Oxford Handbook of Community Singing shows in abundant detail that singing with others is thriving. Using an array of interdisciplinary methods, chapter authors prioritize participation rather than performance and provide finely grained accounts of group singing in community, music therapy, religious, and music education settings. Themes associated with protest, incarceration, nation, hymnody, group bonding, identity, and inclusivity infuse the 47 chapters. Written almost wholly during the 2020-21 COVID-19 pandemic, the Handbook features a section dedicated to collective singing facilitated by audiovisual or communications media (mediated singing), some of it quarantine-mandated. The last of eight substantial sections is a repository of new theories about how group singing practices work. Throughout, the authors problematize the limitations inherited from the western European choral music tradition and report on workable new remedies to counter those constraints"--
Limitations of contract farming as a pro-poor strategy: The case of maize outgrower schemes in upper West Ghana
The focus in this paper is on two relatively large maize-based contract farming (CF) schemes with fixed input packages (Masara and Akate) and a number of smaller and more flexible CF schemes in a remote region in Ghana (Upper West). Results show that these schemes led to improved technology adoption and yield increases. In addition, a subset of maize farmers with high yield improvements due to CF participation had high gross margins. However, on average, yields were not high enough to compensate for higher input requirements and cost of capital. On average, households harvest 29–30 bags (100 kg each), or 2.9–3.0 metric tons, of maize per hectare, and the required repayment for fertilizer...
Farmers’ quality assessment of their crops and its impact on commercialization behavior: A field experiment in Ethiopia
Adoption of quality-enhancing technologies is often driven largely by farmers’ expected returns from these technologies. Without proper grades, standards, and certification systems, however, farmers may remain uncertain about the actual financial return associated with their quality-enhancing investments. This report summarizes the outcomes of a short video-based randomized training intervention on wheat quality measurement and collective marketing among 15,000 wheat farmers in Ethiopia. Our results suggest that the intervention led to significant changes in farmers’ commercialization behaviors—namely, it prompted farmers to adopt behaviors geared toward assessing their wheat’s quali...
Insuring against droughts: Evidence on agricultural intensification and index insurance demand from a randomized evaluation in rural Bangladesh
It is widely acknowledged that unmitigated risks provide a disincentive for otherwise optimal investments in modern farm inputs. Index insurance provides a means for managing risk without the burdens of asymmetric information and high transaction costs that plague traditional indemnity-based crop insurance programs. Yet many index insurance programs that have been piloted around the world have met with rather limited success, so the potential for insurance to foster more intensive agricultural production has yet to be realized. This study assesses both the demand for and the effectiveness of an innovative index insurance product designed to help smallholder farmers in Bangladesh manage risk ...
Taxation in a Low-Income Economy
This volume contains a stimulating collection of analytical studies focusing on taxation in Mozambique. It tells a compelling story about tax systems in a low income economy increasingly integrated into the world trading system, but very much dependent on foreign trade taxes and international development assistance. Key issues covered include: A better understanding of the historical background of tax reforms in a representative African economy (Mozambique) along with an assessment of taxation performance in a comparative perspective. Insights into the practice and implications of tax policy, both from the perspective of the consumer and the firm level. Discussion of the existing institution...
Changing gender roles in agriculture? Evidence from 20 years of data in Ghana
At a time when donors and governments are increasing efforts to mainstream gender in agriculture, it is critical to revisit long-standing wisdom about gender inequalities in agriculture to be able to more efficiently design and evaluate policy interventions. Many stylized facts about women in agriculture have been repeated for decades. Did nothing really change? Is some of this conventional wisdom simply maintained over time, or has it always been inaccurate? We use longitudinal data from Ghana to assess some of the facts and to evaluate whether gender patterns have changed over time. We focus on five main themes: land, cropping patterns, market participation, agricultural inputs, and employment. We add to the literature by showing new facts and evidence from more than 20 years. Results are varied and highlight the difficulty of making general statements about gender in agriculture.
Smog in our brains: Gender differences in the impact of exposure to air pollution on cognitive performance in China
While there is a large body of literature on the negative health effects of air pollution, there is much less written about its effects on cognitive performance for the whole population. This paper studies the effects of contemporaneous and cumulative exposure to air pollution on cognitive performance based on a nationally representative survey in China. By merging a longitudinal sample at the individual level with local air-quality data according to the exact dates and counties of interviews, we find that contemporaneous and cumulative exposure to air pollution impedes both verbal and math scores of survey subjects. Interestingly, the negative effect is stronger for men than for women. Specifically, the gender difference is more salient among the old and less educated in both verbal and math tests.
The great Chinese inequality turnaround
The high level of inequality in China has been a focus of interest for policy makers and researchers. However, few studies have evaluated the trend since 2010. With changes in the economic structure and new policy tools introduced in recent years, a revisit of Chinese inequality should give us the latest information about its evolution and the impacts of these economic and policy changes on income distribution. This paper argues that after a quarter century of sharp and sustained increase, Chinese inequality is now plateauing and even turning down. The argument is made using a range of data sources and a range of measures and perspectives on inequality. The evolution of inequality is further examined through decomposition by income source and population subgroup. Some preliminary explanations are provided for these trends in terms of shifts in policy and the structural transformation of the Chinese economy. The narrative on Chinese inequality now needs to focus on the reasons for this great turnaround.
Can agricultural aspirations influence preferences for new technologies?
In the face of increasing environmental stresses, there is a critical need to improve water-use efficiency in many arid and semiarid agroclimatic zones. Drip irrigation is a high-efficiency irrigation technology that can improve water-use efficiency in currently irrigated areas and transform areas that are not otherwise irrigable in practice. Although adoption of drip irrigation is growing rapidly in India, adoption is low in neighboring Pakistan. The authors of this paper undertook a discrete choice experiment framed around the hypothetical subsidized purchase of a drip irrigation system in four districts of Punjab, Pakistan. The nonrepresentative sample of adopters and nonadopters in the s...
