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  • Targeting in Tax Compliance Interventions : Experimental Evidence from Honduras (anglais)

    Tax authorities often use low-cost communication with taxpayers to encourage voluntary compliance and avoid other costly interventions. This paper reports findings from an experiment with more than 30,000...

    Type de document: Document de travail de recherche sur les politiques Numéro du rapport: WPS9967 Date du document: 14 mars 2022 Mode de publication: Disclosed Auteur: Del Carmen,Giselle,Espinal Hernandez,Edgardo Enrique,De Gouvea Scot De Arruda,Thiago

  • Do Judges Favor Their Own Ethnicity and Gender? : Evidence from Kenya (anglais)

    Evidence from high-income countries suggests that judges often exhibit in-group bias, favoring litigants that share an identity with the judge. However, there is little evidence on this phenomenon from...

    Type de document: Document de travail de recherche sur les politiques Numéro du rapport: WPS9956 Date du document: 7 mars 2022 Mode de publication: Disclosed Auteur: Chen,Daniel Li,Graham,Jimmy,Ramos Maqueda,Manuel,Singh,Shashank - DIME3


  • Building State Capacity : What Is the Impact of Development Projects ? (anglais)

    Although research has established the importance of state capacity in economic development, less is known about how state capacity comes about and the role of external partners in the process. This paper...

    Type de document: Document de travail de recherche sur les politiques Numéro du rapport: WPS9875 Date du document: 8 décembre 2021 Mode de publication: Disclosed Auteur: Di Maro,Vincenzo,Evans,David K.,Khemani,Stuti,De Gouvea Scot De Arruda,Thiago

  • Helping Families Help Themselves ? Heterogeneous Effects of a Digital Parenting Program (anglais)

    Parenting practices are crucial for the development of children’s brains and social skills. However, parenting styles may be far from ideal, particularly those of caregivers with high stress levels. Using...

    Type de document: Document de travail de recherche sur les politiques Numéro du rapport: WPS9850 Date du document: 16 novembre 2021 Mode de publication: Disclosed Auteur: Monteiro Amaral,Sofia Fernando,Dinarte Diaz,Lelys Ileana,Dominguez,Patricio,Perez-Vincent,Santiago M.

  • Addressing Vaccine Hesitancy : Survey and Experimental Evidence from Papua New Guinea (anglais)

    This paper examines the drivers of COVID-19 vaccine hesitancy and tests various means of increasing people’s willingness to receive a COVID-19 vaccine. The study draws on data collected through a broadly...

    Type de document: Document de travail de recherche sur les politiques Numéro du rapport: WPS9837 Date du document: 5 novembre 2021 Mode de publication: Disclosed Auteur: Hoy,Christopher Alexander,Wood,Terence,Moscoe,Ellen Elizabeth

  • Can Grit Be Taught ? Lessons from a Nationwide Field Experiment with Middle-School Students (anglais)

    This paper studies whether a particular socio-emotional skill —grit (the ability to sustain effort and interest toward long-term goals)—can be cultivated and how this affects student learning. The paper...

    Type de document: Document de travail de recherche sur les politiques Numéro du rapport: WPS9831 Date du document: 2 novembre 2021 Mode de publication: Disclosed Auteur: Santos,Indhira Vanessa,Petroska-Beska,Violeta,Amaro Da Costa Luz Carneiro,Pedro Manuel,Eskreis-Winkler,Lauren,Munoz Boudet,Ana Maria,Berniell,Ines,Krekel,Christian,Arias,Omar,Duckworth,Angela Lee

  • Do Illicit Financial Flows Hurt Tax Revenues ? Evidence from the Developing World (anglais)

    Recent work draws attention to the fragility of domestic tax revenues—a vital resource for the developing world—to illicit financial flows. To cope with two major challenges in the illicit financial flows–tax...

    Type de document: Document de travail de recherche sur les politiques Numéro du rapport: WPS9781 Date du document: 23 septembre 2021 Mode de publication: Disclosed Auteur: Combes,Jean-Louis,Minea,Alexandru,Sawadogo,Pegdewende Nestor

  • Shared Decision-Making : Can Improved Counseling Increase Willingness to Pay for Modern Contraceptives ? (anglais)

    Long-acting reversible contraceptives are highly effective in preventing unintended pregnancies, but take-up remains low. This paper analyzes a randomized controlled trial of interventions addressing two...

    Type de document: Document de travail de recherche sur les politiques Numéro du rapport: WPS9777 Date du document: 20 septembre 2021 Mode de publication: Disclosed Auteur: Athey,Susan,Bergstrom,Katy Ann,Hadad,Vitor,Jamison,Julian C,Ozler,Berk,Parisotto,Luca,Sama,Julius Dohbit

  • Scores, Camera, Action : Social Accountability and Teacher Incentives in Remote Areas (anglais)

    Remote schools in developing countries are costly to supervise, resulting in low teacher accountability and poor education outcomes. This paper reports the results of a randomized evaluation of three treatments...

    Type de document: Document de travail de recherche sur les politiques Numéro du rapport: WPS9748 Date du document: 10 août 2021 Mode de publication: Disclosed Auteur: Gaduh,Arya Budhiastra,Pradhan,Menno Prasad,Priebe,Jan,Susanti,Dewi


  • Financing Municipal Water and Sanitation Services in Nairobi’s Informal Settlements (anglais)

    This study estimates the impacts of two interventions implemented as field experiments in informal settlements by Nairobi’s water and sanitation utility to improve revenue collection efficiency and last...

    Type de document: Document de travail de recherche sur les politiques Numéro du rapport: WPS9725 Date du document: 1 juillet 2021 Mode de publication: Disclosed Auteur: Coville,Aidan,Galiani,Sebastian Franco,Gertler,Paul J.,Yoshida,Susumu

  • Coding Bootcamps for Female Digital Employment : Evidence from an RCT in Argentina and Colombia (anglais)

    This paper evaluates the short-term causal effects of a high-quality, intensive, part-time computer coding bootcamp for women on skill acquisition and employment outcomes. Spots were offered in an oversubscribed...

    Type de document: Document de travail de recherche sur les politiques Numéro du rapport: WPS9721 Date du document: 29 juin 2021 Mode de publication: Disclosed Auteur: Aramburu,Julian,Goicoechea,Ana,Mobarak,Ahmed Mushfiq

  • Efficient Irrigation and Water Conservation : Evidence from South India (anglais)

    Widespread adoption of efficient irrigation technologies, including drip irrigation, has been proposed as a means of limiting groundwater overexploitation, especially in the intensively farmed and water-stressed...

    Type de document: Document de travail de recherche sur les politiques Numéro du rapport: WPS9713 Date du document: 24 juin 2021 Mode de publication: Disclosed Auteur: Fishman,Ram,Gine,Xavier,Jacoby,Hanan G.

  • Incentivizing Conservation of de facto Community-Owned Forests (anglais)

    Payments for environmental services are a nature conservation policy in which landowners receive financial compensation conditional on verified environmental service delivery. Contracts for payments for...

    Type de document: Document de travail de recherche sur les politiques Numéro du rapport: WPS9693 Date du document: 8 juin 2021 Mode de publication: Disclosed Auteur: van Soest,Daan,Adjognon,Guigonan Serge,van der Heijden,Eline




  • Heterogenous Teacher Effects of Two Incentive Schemes : Evidence from a Low-Income Country (anglais)

    This paper reports on a randomized evaluation of two teacher incentive programs, which were conducted in a nationally representative sample of 420 public primary schools in Guinea. In 140 schools, high-performing...

    Type de document: Document de travail de recherche sur les politiques Numéro du rapport: WPS9652 Date du document: 7 mai 2021 Mode de publication: Disclosed Auteur: Barrera-Osorio,Felipe,Cilliers,Jacobus,Cloutier,Marie-Helene,Filmer,Deon P.

  • Enhancing Human Capital in Children : A Case Study on Scaling (anglais)

    This paper provides new insights on the science of scaling. The authors study an educational mentoring program with a home visit component implemented at scale in Mexico, under different modalities (original...

    Type de document: Document de travail de recherche sur les politiques Numéro du rapport: WPS9647 Date du document: 3 mai 2021 Mode de publication: Disclosed Auteur: Agostinelli,Francesco,Avitabile,Ciro,Bobba,Matteo