Friedman, Jed

Development Research Group, Development Economics, DEC
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Poverty, POV, Health, HEA
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Development Research Group
Development Economics, DEC
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Last updated August 15, 2023
Citations 378 Scopus

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Now showing 1 - 4 of 4
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    What Does Variation in Survey Design Reveal about the Nature of Measurement Errors in Household Consumption?
    (World Bank, Washington, DC, 2013-02) Gibson, John ; Beegle, Kathleen ; De Weerdt, Joachim ; Friedman, Jed
    This paper uses data from eight different consumption questionnaires randomly assigned to 4,000 households in Tanzania to obtain evidence on the nature of measurement errors in estimates of household consumption. While there are no validation data, the design of one questionnaire and the resources put into its implementation make it likely to be substantially more accurate than the others. Comparing regressions using data from this benchmark design with results from the other questionnaires shows that errors have a negative correlation with the true value of consumption, creating a non-classical measurement error problem for which conventional statistical corrections may be ineffective.
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    The Challenge of Measuring Hunger
    (World Bank, Washington, DC, 2014-01) De Weerdt, Joachim ; Beegle, Kathleen ; Friedman, Jed ; Gibson, John
    There is widespread interest in the number of hungry people in the world and trends in hunger. Current global counts rely on combining each country's total food balance with information on distribution patterns from household consumption expenditure surveys. Recent research has advocated for calculating hunger numbers directly from these same surveys. For either approach, embedded in this effort are a number of important details about how household surveys are designed and how these data are then used. Using a survey experiment in Tanzania, this study finds great fragility in hunger counts stemming from alternative survey designs. As a consequence, comparable and valid hunger numbers will be lacking until more effort is made to either harmonize survey designs or better understand the consequences of survey design variation.
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    Methods of Household Consumption Measurement Through Surveys : Experimental Results from Tanzania
    ( 2010-12-01) Beegle, Kathleen ; De Weerdt, Joachim ; Friedman, Jed ; Gibson, John
    Consumption expenditure has long been the preferred measure of household living standards. However, accurate measurement is a challenge and household expenditure surveys vary widely across many dimensions, including the level of reporting, the length of the reference period, and the degree of commodity detail. These variations occur both across countries and also over time within countries. There is little current understanding of the implications of such changes for spatially and temporally consistent measurement of household consumption and poverty. A field experiment in Tanzania tests eight alternative methods to measure household consumption on a sample of 4,000 households. There are significant differences between consumption reported by the benchmark personal diary and other diary and recall formats. Under-reporting is particularly relevant in illiterate households and for urban respondents completing household diaries; recall modules measure lower consumption than a personal diary, with larger gaps among poorer households and households with more adult members. Variations in reporting accuracy by household characteristics are also discussed and differences in measured poverty as a result of survey design are explored. The study concludes with recommendations for methods of survey based consumption measurement in low-income countries.
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    The Distribution of Effort: Physical Activity, Gender Roles, and Bargaining Power in an Agrarian Setting
    (World Bank, Washington, DC, 2021-04) Friedman, Jed ; Gaddis, Isis ; Kilic, Talip ; Martuscelli, Antonio ; Palacios-Lopez, Amparo ; Zezza, Alberto
    The disutility of work, often summarily described as effort, is a primal component of economic models of worker and consumer behavior. However, empirical applications that measure effort, especially those that assess the distribution of effort across known populations, are historically scarce. This paper explores intra-household differences in physical activity in a rural agrarian setting. Physical activity is captured via wearable accelerometers that provide a proxy for physical effort expended per unit of time. In the study setting of agricultural households in Malawi, men devote significantly more time to sedentary activities than women (38 minutes per day), but also spend more time on moderate-to-vigorous activities (16 minutes). Using standardized energy expenditure as a summary measure for physical effort, women exert marginally higher levels of physical effort than men. However, gender differences in effort among married partners are strongly associated with intra-household differences in bargaining power, with significantly larger husband-wife effort gaps alongside larger differences in age and individual land ownership as well as whether the couple lives as part of a polygamous union. Physical activity -- a proxy for physical effort, an understudied dimension of wellbeing -- exhibits an unequal distribution across gender in this population.