English definitions

“Evaluation is the process of determining merit, worth, or significance; an evaluation is a product of that process.”

Michael Scriven, 1991

 

“Program evaluation is the systematic collection of information about the activities, characteristics, and outcomes of programs to make judgements about the program, improve program effectiveness, and/or inform decisions about future programming.”

Patton, 1997

 

“Evaluation is the systematic assessment of the operation and/or the outcomes of a program or policy, compared to a set of explicit or implicit standards as a means of contributing to the improvement of the program or policy.”

Carol Weiss, 1998

 

“Program evaluation is the systematic assessment of program results and, to the extent feasible, systematic assessment of the extent to which the program caused those results. Evaluation includes ongoing monitoring of programs, as well as one shot studies of program processes or program impact. The approaches used are based on social science research methodologies and professional standards.”

NewcomerHatry, Wholey, 2010