• Payment by results in international development: Evidence from the first decade
    2019, Development Policy Review, Available online

    Details PDF Preprint (free)

  • Multilingualism and Public Goods Provision: An Experiment in Two Languages in Uganda
    2017, Journal of Development Economics, 129:47-57

    Details PDF Preprint (free) Code Dataset Script

  • Payment by Results In Development Aid: All that Glitters is Not Gold
    2016, World Bank Research Observer, 31(2): 290-319

    Details PDF

  • Foreign Aid and Domestic Taxation: Multiple Sources, One Conclusion
    2016, Development Policy Review, 34(3): 365-383

    Details PDF Code Dataset

  • Do Performance Measures of Donors’ Aid Allocation Underperform?
    2015, The World Economy, 38(5): 805–824

    Details PDF Dataset

  • Selectivity on Aid Modality: Determinants of Budget Support from Multilateral Donors
    2012, The Review of International Organizations, 7(3): 267-284

    Details PDF Dataset

  • 25 Years of Aid Allocation Practice: Whither Selectivity?
    2011, World Development, 39(10): 1724–1734

    Details PDF Code Dataset

  • Aid and tax revenue: Signs of a positive effect since the 1980s
    2011, Journal of International Development 23(2): 165-180

    Details PDF

Work In Progress

  • Nature’s Frames, Reference Lotteries and Risky Choice: Evidence from a Ugandan Field Lab, with Ben D’Exelle and Arjan Verschoor

  • Socially Embedded Risky Choice: Fairness, Efficiency and Social Distance, with Ben D’Exelle and Arjan Verschoor

  • Lying and Language, with Ying-Yi Hong


Review of Payment by Results in DFID: Establishing the Evidence Base, 2017 A four month consultancy conducting a semi-systematic review of evidence of Payment by Results in International Development, and an investigation of how PBR evidence has been used within DFID. With colleagues at UEA, including Maren Duvendack and Brendan Whitty.

Evaluation of Results Based Aid in the Education Sector, Ethiopia, 2016 A short consultancy (c.10 days) overseeing a review of previous evaluation work, which led to a discovery of several fundamental problems with the data used. This fed into the project completion review.

Evaluation of Results Based Aid in the Education Sector, Rwanda, 2013-15 This was an exciting three-year project for DFID Rwanda, evaluating the effect of results based aid in Rwanda’s education system. This is one of the first evaluations of results based aid (a form of ‘cash on delivery’ aid). Upper Quartile led the bid, and I worked with colleagues at UEA. (c. 100 days) Final Report

Conceptual Basis for Payment by Results in International Development, 2013-2014 For DFID UK, a review of the conceptual basis for Payment by Results. This examines theoretically and conceptually new aid modalities. It deals with the interaction between donor and recipient, and makes use of relevant behavioural insights. (c. 20 days). There are several relevant outputs:

Evaluating Development Impact Bonds, 2014 For DFID UK, a study on Development Impact Bonds (DIBs). The first half of the report looks at their conceptual nature, using economic theory and related evidence (e.g. Social Impact Bonds, which have a longer history). The second half of the report looks at how they can be evaluated. Joint with Roger Drew. (30 days.)

International Aid and Domestic Tax Revenue, 2013-14 Following my 2011 publication examining the effects of aid grants and loans on domestic tax revenue, I returned to the subject for ICTD. The aim of the project was to investigate the source of contradictory results, predominately regarding aid grants, and led to a publication in the World Bank Research Observer (c. 80 days).

Aid and Government Spending, 2010-2011 Through CREDIT, the School of Economics, University of Nottingham. The work was for the AFD (Agence Française de Développement), and included 3 reports, which are currently not publicly available. My input was econometric. (c. 80 days)