Quasi-experimental designs are sometimes necessary when social programs are evaluated. Under certain conditions they are preferable to experimental designs with random assignment to treatment and control groups. This article examines the situations in which experimental evaluation designs may be inappropriate. When faced with these limiting conditions, analysts can choose a number of approaches which will strengthen the rigor of their quasi-experimental designs.
ASJC Scopus subject areas
- Developmental and Educational Psychology
- Sociology and Political Science