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Mind Your Cowpeas and Cues: Inference and External Validity in RCTs

Berk Ozler's picture

There is a minor buzz this week in Twitter and the development economics blogosphere about a paper (posted on the CSAE 2012 Conference website) that discusses a double blind experiment of providing different seeds of cowpeas to farmers in Tanzania.

Misadventures in Photographing Impact

David McKenzie's picture

One of my favorite papers to present is my paper on improving management in India, in part because we have wonderful photos to illustrate what bad management looks like and what improved practices look like (see the appendix to the paper for some of these).  Photographing impact isn’t only useful for presentations and glossy summaries, but may potentially offer a new form of data. However, this is easier said than done, and today I thought I’d share some misadventures in trying to photograph impacts on small firms.

Notes from the field: Sometimes you’re the windshield, sometimes you’re the bug

Markus Goldstein's picture

So this past week I was in Ghana following up on some of the projects I am working on there with one of my colleagues.   We were designing an agricultural impact evaluation with some of our counterparts, following up on the analysis of the second round of a land tenure impact evaluation and a financial literacy intervention, and exploring the possibility of some work in the rural financial sector.   In no particular order, here are some of the things I learned and some things I am still wondering about:

    The evil of flowers: women’s work and domestic violence in Ethiopia

    Markus Goldstein's picture

    After talking about domestic violence measurement and the need for some kind of model when you think about things like domestic violence with Toan last week, this week I look at a new paper from Jonas Hort and Espen Villanger which both asks the question carefully and definitely makes me think hard about what the ri

    Schools is Good: A Reply to Lant Pritchett

    Berk Ozler's picture

    Lant Pritchett once said to me “Thanks for the comments. As usual they are all very smart and well-informed and I disagree with most.” I feel similarly regarding his very popular piece posted here last week (already one of the top 10 most popular posts in our blog's short history) on how CCTs are forcing children in developing countries into terrible schools. So, here goes a reply…

    Dear Lant,

    What the HIV prevention gel trial failure implies for trials in economics

    Berk Ozler's picture

    For the World AIDS Day, there is a sign at the World Bank that states that taking ARVs reduces rate of HIV transmission by 96%. If this was last year, a sign somewhere may well have read “A cheap microbicidal gel that women can use up to 12 hours before sexual intercourse reduces HIV infection risk by more than half – when used consistently.” Well, sadly, it turns out, so much for that.

    The Regressive Demands of Demand-Driven Development

    Berk Ozler's picture

    There is a frustratingly weak and positive finding in the literature that examines the targeting performance of social funds projects, which, over time, took on many of the characteristics of community-driven development programs and became an important part of the social protection strategy in many countries by funding projects that provide public (and sometimes private) goods requested by communities: they are only moderately pro-poor.