Book contents
- The Cambridge Handbook of Research Methods and Statistics for the Social and Behavioral Sciences
- Cambridge Handbooks in Psychology
- The Cambridge Handbook of Research Methods and Statistics for the Social and Behavioral Sciences
- Copyright page
- Dedication
- Contents
- Figures
- Tables
- Contributors
- Preface
- Part I From Idea to Reality: The Basics of Research
- Part II The Building Blocks of a Study
- Part III Data Collection
- 13 Cross-Sectional Studies
- 14 Quasi-Experimental Research
- 15 Non-equivalent Control Group Pretest–Posttest Design in Social and Behavioral Research
- 16 Experimental Methods
- 17 Longitudinal Research: A World to Explore
- 18 Online Research Methods
- 19 Archival Data
- 20 Qualitative Research Design
- Part IV Statistical Approaches
- Part V Tips for a Successful Research Career
- Index
- References
15 - Non-equivalent Control Group Pretest–Posttest Design in Social and Behavioral Research
from Part III - Data Collection
Published online by Cambridge University Press: 25 May 2023
- The Cambridge Handbook of Research Methods and Statistics for the Social and Behavioral Sciences
- Cambridge Handbooks in Psychology
- The Cambridge Handbook of Research Methods and Statistics for the Social and Behavioral Sciences
- Copyright page
- Dedication
- Contents
- Figures
- Tables
- Contributors
- Preface
- Part I From Idea to Reality: The Basics of Research
- Part II The Building Blocks of a Study
- Part III Data Collection
- 13 Cross-Sectional Studies
- 14 Quasi-Experimental Research
- 15 Non-equivalent Control Group Pretest–Posttest Design in Social and Behavioral Research
- 16 Experimental Methods
- 17 Longitudinal Research: A World to Explore
- 18 Online Research Methods
- 19 Archival Data
- 20 Qualitative Research Design
- Part IV Statistical Approaches
- Part V Tips for a Successful Research Career
- Index
- References
Summary
Experimental research designs feature two essential ingredients: manipulation of an independent variable and random assignment of subjects. However, in a quasi-experimental design, subjects are assigned to groups based on non-random criteria. This design allows for manipulation of the independent variable with the aim of examining causality between an intervention and an outcome. In social and behavioral research, this design is useful when it may not be logistically or ethically feasible to use a randomized control design – the “gold standard.” Although not as strong as an experiment, non-equivalent control group pretest–posttest designs are usually higher in internal validity than correlation designs. Overcoming possible threats to internal and external validity in a non-equivalent control group pretest–posttest design, such as cofounding variables, are discussed in relation to sample selection, power, effect size, and specific methods of data analyses.
- Type
- Chapter
- Information
- The Cambridge Handbook of Research Methods and Statistics for the Social and Behavioral SciencesVolume 1: Building a Program of Research, pp. 314 - 332Publisher: Cambridge University PressPrint publication year: 2023