Modelling is an approach to impact evaluation which uses mathematical models to describe social and economic relationships and to infer causality from an intervention to an outcome, and/or between an outcome and its determinants. Models with more than one equation are most valuable, as they...

Impact evaluation provides information about the impacts produced by an intervention. It can be undertaken of a programme or a policy, or upstream work – such as capacity building, policy advocacy and support for an enabling environment. This goes beyond looking only at goals and objectives to...

Las evaluaciones de impacto deben ir más allá de la simple evaluación de la magnitud de los efectos (el impacto medio) para determinar con quién ha tenido éxito un programa o política y de qué forma. Lo que constituye «éxito» y la forma de analizar y sintetizar los datos para responder...

Quasi-experimental research designs, like experimental designs, test causal hypotheses. Quasi-experimental designs identify a comparison group that is as similar as possible to the intervention group in terms of baseline (pre-intervention) characteristics. The comparison group captures what...

Uno de los aspectos esenciales de la evaluación de impacto es que no solo mide o describe los cambios que han ocurrido, sino que también procura entender la función de determinadas intervenciones (es decir, programas o políticas) en la generación de estos cambios. Este proceso se conoce...

La evaluación de impacto proporciona información sobre los impactos que produce una intervención. Puede realizarse una evaluación de impacto de un programa o una política o del trabajo preliminar, como la creación de capacidad, la promoción de políticas y el apoyo a la creación de un...

A randomized controlled trial (RCT) is an experimental form of impact evaluation in which the population receiving the programme or policy intervention is chosen at random from the eligible population, and a control group is also chosen at random from the same eligible population. It tests the...

Interviews are easy to do badly and hard to do well - good planning, adequate time and appropriate skills are required. The type of interview should be carefully chosen to suit the situation rather than choosing a type of interview (such as focus groups) simply because it is commonly used....

A theory of change explains how activities are understood to produce a series of results that contribute to achieving the final intended impacts. It can be developed for any level of intervention – an event, a project, a programme, a policy, a strategy or an organization. In an impact...

Impact evaluations need to go beyond assessing the size of the effects (i.e., the average impact) to identify for whom and in what ways a programme or policy has been successful. What constitutes ‘success’ and how the data will be analysed and synthesized to answer the specific key...