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Quasi-Experimental Designs

1. Introduction

2. Characteristics of quasi-experimental designs

3. Campbell and Stanley pseudo-experimental designs

(A) One-group, pretest-posttest design

(B) Static groups comparison

4. Campbell and Stanley original seven threats to internal validity

5. Additional threats to internal validity

6. Campbell and Stanley quasi-experimental designs

(A) Separate samples, pretest-posttest design

(B) Nonequivalent control group design

(C) Interrupted time-series design

(D) Time-series design with nonequivalent control group

7. Use of quasi-experimental designs in program evaluation

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