This is only a preliminary version, please integrate!
According to the definition given by the OECD , "Evaluations are analytical assessments addressing results of public policies, organisations or programmes, that emphasise reliability and usefulness of findings. Their role is to improve information and reduce uncertainty..."Evaluations address problems of decision making, supporting decision makers or the public, organisations with information.
- OECD (1998); BEST PRACTICE GUIDELINES FOR EVALUATION. PUMA Policy Brief No. 5.