The international community has pledged 11 billion dollars to Haiti, a country where non-governmental organizations (NGOs) provide nearly all public goods and services. This raises at least two questions: How can NGOs most effectively perform their own work, and how can NGOs integrate their...

This paper focuses on the question of whether the magnitude of long-established environmentally related taxes (ERT) is related to countries environmental performance. While environmental taxes efficiencies have previously been discussed, those taxes contribution to reducing pollution and...

In addition to the morbidity and mortality concerns of outdoor air pollution, studies have shown that air pollution also generates problems for children`s cognitive performance and human capital formation. High concentrations of pollutants can affect children’s learning process by exacerbating...

The guide outlines the main evaluation challenges associated with ALMP’s, and shows how to obtain rigorous impact estimates using two leading evaluation approaches. The most credible and straightforward evaluation method is a randomized design, in which a group of potential participants is...

This note defines what spillover effects are, why it is important to measure them, and how to design a field experiment that will enable researchers to measure the average effects of the treatment in the presence of spillover effects on subjects both eligible and ineligible for the program. In...

This paper reports the results of a three-month randomized controlled trial to estimate the impact of an Internet and mobile telephone short message service (SMS) intervention on adolescents’ information about substances and rates of consumption. A low percentage of participants logged on to...

Tax evasion is a pervasive problem in many countries. In particular, some developing countries do not collect even half of what they would if taxpayers complied with the written letter of the law. The academic literature has not been oblivious to the need to explain why people pay (or do not...

A randomized controlled trial was carried out in Bogota, home to the majority of Colombia’s internally displaced persons (IDPs), to assess whether the use of short message service (SMS) technology effectively informed this population of its eligibility to receive social benefits. The...

This paper studies the effects of information and communication technologies (ICT) in the school environment on educational achievement. To quantify these effects, the impact is evaluated of a project run by the municipality of Guayaquil, Ecuador, which provides computer-aided instruction in...