You are here

Methods of Randomization in Experimental Design

Methods of Randomization in Experimental Design

October 2012 | 208 pages | SAGE Publications, Inc
This book provides a conceptual systematization and a practical tool for the randomization of between-subjects and within-subjects experimental designs in social, behavioural, and health sciences. The author adopts a pedagogical strategy that allows the reader to implement all randomization methods by relying on the materials given in the appendices and using the common features included in any word processor software. In the companion website (, along with other supplementary materials, the reader can freely download IBM SPSS and R versions of SCRAED, a package that performs simple and complex random assignment in experimental design, including the 18 randomization methods presented in Chapters 2 and 3.
Chapter 1. Randomized Experiments
1.1 Nature and Structure of Randomized Experiments

1.2 Experimental Design and Validity of Scientific Inferences

1.3 Randomized Experiments and Methods of Randomization

1.4 Terminological and Notational Issues

Chapter 2. Between-Subjects Designs Randomization
2.1 Randomization and Local Control

2.2 Completely Randomized Designs

2.3 Restrictedly Randomized Designs: Blocking

2.4 Restrictedly Randomized Designs: Stratifying

2.5 Sequential Assignment and Adaptive Randomization Methods

Chapter 3. Within-Subjects Designs Randomization
3.1 Basic Assumptions and Specific Threats to Validity

3.2 Treatment Design and Methods of Randomization

3.3 Random Counterbalancing

3.4 Positional Counterbalancing

3.5 Nonrestricted Sequential Counterbalancing

3.6 Restricted Sequential Counterbalancing

3.7 Factorial Designs

Chapter 4. Validity Issues, Analysis Guidelines, and Reporting Standards
4.1 Planning and Monitoring Randomized Experiments

4.2 Analyzing Randomized Experiments

4.3 Reporting Randomized Experiments

Appendix 1. Random Numbers
Appendix 2. Permutations, Arrangements, and Combinations
Appendix 3. Latin Squares

“This book does an excellent job covering the key issues.”

Richard Berk
University of Pennsylvania

Sample Materials & Chapters

CH 1

Valentim Rodrigues Alferes

Valentim R. Alferes is Professor of Psychology at the University of Coim­bra, Portugal, where he has been teaching courses in social psychology and research methods in psychology at the undergraduate and graduate levels for over 20 years. His main scientific interests and publications are in the domains of sexuality, close relationships, dyadic data analysis, and experi­mental design. He has delivered lectures and conducted workshops on methodological and statistical topics at several Portuguese universities and has also maintained an SPSS Syntax Files website since 2002. He earned a PhD in social psychology from the University of Coimbra... More About Author

Purchasing options

Please select a format:

ISBN: 9781452202921

SAGE Research Methods is a research methods tool created to help researchers, faculty and students with their research projects. SAGE Research Methods links over 175,000 pages of SAGE’s renowned book, journal and reference content with truly advanced search and discovery tools. Researchers can explore methods concepts to help them design research projects, understand particular methods or identify a new method, conduct their research, and write up their findings. Since SAGE Research Methods focuses on methodology rather than disciplines, it can be used across the social sciences, health sciences, and more.