Access to irrigation and the escape from poverty: Evidence from Northern Mali

"Significant changes in the agricultural sector in northern Mali suggest that irrigation has made a large contribution to welfare increases over the past eight years. Using difference-in-differences, propensity score matching, and matched difference in differences with a small panel, this study estimates the impact of access to irrigation on poverty, production, and nutrient intakes. The findings suggest that gains in agricultural production value do not transfer uniquely to household consumption. The paper tests two alternative hypotheses about the distribution of agricultural gains: (1) the gains in agricultural production induced by irrigation yield higher household savings, or (2) intra-village transfers from irrigators to non-irrigators contribute to informal social insurance. The paper provides evidence of both saving and sharing within villages as complimentary strategies for consuming gains in agricultural production. This finding suggests that estimating the effects of a program, relying solely on household consumption, may underestimate the welfare gains of irrigation investment by ignoring the household's savings and informal insurance network." from Author's AbstractIrrigation, Informal insurance, Development strategy,

States' Evidence: What It Means to Make 'Adequate Yearly Progress' Under NCLB

States will soon announce the schools or districts that did or did not make "adequate yearly progress," or "AYP" under NCLB. But the question that provides the most insight into a school's performance is not whether a school made AYP, but rather how a school did or did not make AYP

Do household definitions matter in survey design?

Household definitions used in multi-topic household surveys vary between surveys but have potentially significant implications for household composition, production, and poverty statistics. Standard definitions of the household usually include some intersection of keywords relating to residency requirements, common food consumption, and intermingling of income or production decisions. Despite best practices intending to standardize the definition of the household, it is unclear which types of definitions or which intersections of keywords in a definition result in different household compositions. This paper conducts a randomized survey experiment of four different household definitions in Mali to examine the implications for household-level statistics. This approach permits analysis of the trade-offs between alternative definition types. We find that additional keywords in definitions increase rather than decrease household size and significantly alter household composition. Definitions emphasizing common consumption or joint production increase estimates of the levels of household assets and consumption statistics, but not on per adult equivalency asset and consumption statistics, relative to open-ended definitions of the household. In contrast, definition type did not affect production statistics in levels, although we observe significant differences in per adult equivalency terms. Our findings suggest that variations in household definition have implications for measuring household welfare and production over time and across countries, as well as evaluation studies where the correct measure of spillover effects within and across households is necessary for measuring the benefits of an intervention.assets, Consumption, household definition, randomized experiment,

Do labor statistics depend on how and to whom the questions are asked ? results from a survey experiment in Tanzania

Labor market statistics are critical for assessing and understanding economic development. In practice, widespread variation exists in how labor statistics are measured in household surveys in low-income countries. Little is known whether these differences have an effect on the labor statistics they produce. This paper analyzes these effects by implementing a survey experiment in Tanzania that varied two key dimensions: the level of detail of the questions and the type of respondent. Significant differences are observed across survey designs with respect to different labor statistics. Labor force participation rates, for example, vary by as much as 10 percentage points across the four survey assignments. Using a short labor module without screening questions on employment generates lower female labor force participation and lower rates of wage employment for both men and women. Response by proxy rather than self-report yields lower male labor force participation, lower female working hours, and lower employment in agriculture for men. The differences between proxy and self reporting seem to come from information imperfections within the household, especially with the distance in age between respondent and subject playing an important role, while gender and educational differences seem less important.Labor Markets,Labor Policies,Work&Working Conditions,Social Analysis,Housing&Human Habitats

Explaining Variation in Child Labor Statistics

Child labor statistics are critical for assessing the extent and nature of child labor activities in developing countries. In practice, widespread variation exists in how child labor is measured. Questionnaire modules vary across countries and within countries over time along several dimensions, including respondent type and the structure of the questionnaire. Little is known about the effect of these differences on child labor statistics. This paper presents the results from a randomized survey experiment in Tanzania focusing on two survey aspects: different questionnaire design to classify children work and proxy response versus self-reporting. Use of a short module compared with a more detailed questionnaire has a statistically significant effect, especially on child labor force participation rates, and, to a lesser extent, on working hours. Proxy reports do not differ significantly from a child’s self-report. Further analysis demonstrates that survey design choices affect the coefficient estimates of some determinants of child labor in a child labor supply equation. The results suggest that low-cost changes to questionnaire design to clarify the concept of work for respondents can improve the data collected.child labor, survey design, Tanzania

Do Labor Statistics Depend on How and to Whom the Questions Are Asked? Results from a Survey Experiment in Tanzania

Labor market statistics are critical for assessing and understanding economic development. In practice, widespread variation exists in how labor statistics are measured in household surveys in low-income countries. Little is known whether these differences have an effect on the labor statistics they produce. This paper analyzes these effects by implementing a survey experiment in Tanzania that varied two key dimensions: the level of detail of the questions and the type of respondent. Significant differences are observed across survey designs with respect to different labor statistics. Labor force participation rates, for example, vary by as much as 10 percentage points across the four survey assignments. Using a short labor module without screening questions on employment generates lower female labor force participation and lower rates of wage employment for both men and women. Response by proxy rather than self-report yields lower male labor force participation, lower female working hours, and lower employment in agriculture for men. The differences between proxy and self reporting seem to come from information imperfections within the household, especially with the distance in age between respondent and subject playing an important role, while gender and educational differences seem less important.Tanzania, survey design, labor statistics, field experiment

Asset dynamics in Northern Nigeria:

This paper examines household asset dynamics and gender-differentiated asset inequality over a 20-year period (1988–2008) in northern Nigeria. We show that the initial endowments of both household capital and livestock holdings are inconsistent with the poverty trap hypothesis but that tracking rules for households in panel surveys may lead to differences in empirical results on poverty traps. We also investigate whether initial household endowments contributed to gender-differentiated future asset levels and asset inequality. Initial livestock holdings have an effect on women's future livestock holdings but not on their livestock shares within the household, as the effect of initial livestock holdings on men's future livestock levels was much greater than its effect on women's levels. The mechanism through which asset levels differed was related to the relative prices of the assets in gender-differentiated asset portfolios. Men, who primarily held larger livestock with larger unit values, benefited from large price increases in high-value livestock, while women held lower-value livestock. These price fluctuations reinforced gender asset inequality within households for both types of assets considered.asset dynamics, poverty traps, Gender, Household resource allocation,

Exploring the Potential of the Web-Based Virtual World of Second Life to Improve Substance Abuse Treatment Outcomes

Provides an overview of Second Life, an Internet-based virtual world, and summarizes discussions among addiction recovery experts about integrating virtual reality into behavioral treatment as a way to teach patients new responses to real environments

Migratory responses to agricultural risk in Northern Nigeria

We investigate the extent in which northern Nigerian households engage in internal migration to insure against ex ante and ex post agricultural risk due to weather-related variability and shocks. We use data on the migration patterns of individuals over a 20-year period and temperature degree-days to identify agricultural risk. Controlling for ex ante and ex post risk, we find that households with higher ex ante risk are more likely to send migrants. Households facing hot shocks before the migrant’s move tend to keep their male migrants in closer proximity. These findings suggest that households use migration as a risk management strategy in response to both ex ante and ex post risk, but that migration responses are gender-specific. These findings have implications not only for understanding the insurance motives of households, but also potential policy responses tied to climatic warming.Migration, Risk, temperature degree days,

The Consequences of Academic Match between Students and Colleges

We consider the effects of student ability, college quality, and the interaction between the two on academic outcomes and future earnings using data on two cohorts of college enrollees drawn from the NLSY-79 and the NLSY-97. We find that student sorting has increased modestly between cohorts, and that student ability and college quality strongly improve degree completion and earnings. These patterns imply that, on average, students benefit from “overmatch” of the sort generated by affirmative action in admissions. We find little evidence of match effects on degree completion at eight years or on STEM degree completion, but suggestive evidence of some complementarity between student ability and college quality in degree completion at four years and long-term earnings. Such complementarity implies a tradeoff between equity and efficiency for policies that move lower ability students to higher quality colleges