A Method to Obtain a Randomized Control Group Where It Seems Impossible: A Case Study in Program Evaluation  

Oleh:

Zhu, Shu-Hong

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Evaluation Review vol. 23 no. 4 (Aug. 1999), page 363-377.
Fulltext: 363.pdf (98.74KB)

Isi artikel

Randomization of program participants into control and experimental groups is often not feasible in field settings. The researcher’s desire to evaluate a program with a rigorous experimental design is often incompatible with the objective of serving the expressed needs of the programparticipants. However, opportunities do arise when a andomized control group can be constructed without disregarding the participants’wish to be included in the treatment group. This article describes a method that uses the participants’ compliance to program instructions as a means of classifying participants and, thereby, obtains a randomized control group for a subset of participants. A large smoking intervention project is used to illustrate two variations of this method.

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