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Strategies to Approximate Random Sampling and Assignment
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Strategies to Approximate Random Sampling and Assignment

Patrick Dattalo

Abstract

Random sampling (RS) and random assignment (RA) are considered by many researchers to be the definitive methodological procedures for maximizing external and internal validity. However, there is a daunting list of legal, ethical, and practical barriers to implementing RS and RA. While there are no easy ways to overcome these barriers, social workers should seek and utilize strategies that minimize sampling and assignment bias. This book is a single source of a diverse set of tools that will maximize a study's validity when RS and RA are neither possible nor practical. Readers are guided in sel ... More

Keywords: random sampling, random assignment, exemplar sampling, sequential sampling, randomization tests, multiple imputation, mean-score logistic regression, sequential assignment and treatment-as-usual combined, partial randomization, constructed comparison groups, instrumental variables methods, propensity scores

Bibliographic Information

Print publication date: 2009 Print ISBN-13: 9780195378351
Published to Oxford Scholarship Online: February 2010 DOI:10.1093/acprof:oso/9780195378351.001.0001

Authors

Affiliations are at time of print publication.

Patrick Dattalo, author
Virginia Commonwealth University

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