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Experimental And Quasi Experimental Designs

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Experimental and Quasi Experimental Designs for Research

Experimental and Quasi Experimental Designs for Research Book
Author : Donald T. Campbell,Julian C. Stanley
Publisher : Ravenio Books
Release : 2015-09-03
ISBN :
Language : En, Es, Fr & De

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Book Description :

We shall examine the validity of 16 experimental designs against 12 common threats to valid inference. By experiment we refer to that portion of research in which variables are manipulated and their effects upon other variables observed. It is well to distinguish the particular role of this chapter. It is not a chapter on experimental design in the Fisher (1925, 1935) tradition, in which an experimenter having complete mastery can schedule treatments and measurements for optimal statistical efficiency, with complexity of design emerging only from that goal of efficiency. Insofar as the designs discussed in the present chapter become complex, it is because of the intransigency of the environment: because, that is, of the experimenter’s lack of complete control.

Experimental and Quasi experimental Designs for Generalized Causal Inference

Experimental and Quasi experimental Designs for Generalized Causal Inference Book
Author : WS. SHADISH,William R. Shadish,Thomas D. Cook,Donald Thomas Campbell
Publisher : Wadsworth Publishing Company
Release : 2002
ISBN :
Language : En, Es, Fr & De

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Book Description :

Sections include: experiments and generalised causal inference; statistical conclusion validity and internal validity; construct validity and external validity; quasi-experimental designs that either lack a control group or lack pretest observations on the outcome; quasi-experimental designs that use both control groups and pretests; quasi-experiments: interrupted time-series designs; regresssion discontinuity designs; randomised experiments: rationale, designs, and conditions conducive to doing them; practical problems 1: ethics, participation recruitment and random assignment; practical problems 2: treatment implementation and attrition; generalised causal inference: a grounded theory; generalised causal inference: methods for single studies; generalised causal inference: methods for multiple studies; a critical assessment of our assumptions.

Experimental and Quasi experimental Designs for Generalized Causal Inference

Experimental and Quasi experimental Designs for Generalized Causal Inference Book
Author : William R. Shadish,Thomas D. Cook,Donald Thomas Campbell
Publisher :
Release : 2002
ISBN : 9780395307878
Language : En, Es, Fr & De

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Book Description :

This successor of the original Cook/Campbell Quasi-Experimentation: Design and Analysis Issues for Field Settings represents updates in the field over the last two decades. The book covers four major topics in field experimentation: Theoretical matters: Experimentation, causation, and validity ; Quasi-experimental design: Regression discontinuity designs, interrupted time series designs, quasi-experimental designs that use both pretests and control groups, and other designs ; Randomized experiments: Logic and design issues, and practical problems involving ethics, recruitment, assignment, treatment implementation, and attrition ; Generalized causal inference: A grounded theory of generalized causal inference, along with methods for implementing that theory in single and multiple studies.

Quasi Experimental Research Designs

Quasi Experimental Research Designs Book
Author : Bruce A. Thyer
Publisher : Oxford University Press
Release : 2012-02-16
ISBN : 0195387384
Language : En, Es, Fr & De

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Book Description :

This pocket guide describes the logic, design, and conduct of the range of such designs, encompassing pre-experiments, quasi-experiments making use of a control or comparison group, and time-series designs. While it can be utilized as a manual, this book is also valuable for practitioners seeking a greater conceptual understanding of quasi-experimental studies in social work literature. Human service professionals planning to undertake a program evaluation of their agency's services will find this book helpful in understanding the steps and actions needed to adopt a quasi-experimental strategy.

Advances in Quasi Experimental Design and Analysis

Advances in Quasi Experimental Design and Analysis Book
Author : William M. K. Trochim
Publisher : Jossey-Bass
Release : 1986-11-04
ISBN :
Language : En, Es, Fr & De

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Book Description :

The intent of this volume of New Directions for Program Evaluation is to update, even to alter, our thinking about quasi-experimentation in applied social research and program evaluation. This volume makes the case that we have moved beyond the traditional thinking on quasi-experiments as a collection of specific designs and threats to validity toward a more integrated, synthetic view of quasi-experimentation as part of a general logical epistemological framework for research. This is the 31st issue of New Directions for Program Evaluation. For more information on the series, please see the Journals and Periodicals page.

Quasi Experimentation

Quasi Experimentation Book
Author : Charles S. Reichardt
Publisher : Guilford Publications
Release : 2019-08-15
ISBN : 1462540252
Language : En, Es, Fr & De

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Book Description :

Featuring engaging examples from diverse disciplines, this book explains how to use modern approaches to quasi-experimentation to derive credible estimates of treatment effects under the demanding constraints of field settings. Foremost expert Charles S. Reichardt provides an in-depth examination of the design and statistical analysis of pretest–posttest, nonequivalent groups, regression discontinuity, and interrupted time-series designs. He details their relative strengths and weaknesses and offers practical advice about their use. Comparing quasi-experiments to randomized experiments, Reichardt discusses when and why the former might be a better choice than the latter in the face of the contingencies that are likely to arise in practice. Modern methods for elaborating a research design to remove bias from estimates of treatment effects are described, as are tactics for dealing with missing data and noncompliance with treatment assignment. Throughout, mathematical equations are translated into words to enhance accessibility. Adding to its discussion of prototypical quasi-experiments, the book also provides a complete typology of quasi-experimental design options to help the reader craft the best research design to fit the circumstances of a given study.

Using Propensity Scores in Quasi Experimental Designs

Using Propensity Scores in Quasi Experimental Designs Book
Author : William M. Holmes
Publisher : SAGE Publications
Release : 2013-06-10
ISBN : 1483310817
Language : En, Es, Fr & De

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Book Description :

Using Propensity Scores in Quasi-Experimental Designs, by William M. Holmes, examines how propensity scores can be used to reduce bias with different kinds of quasi-experimental designs and to fix or improve broken experiments. Requiring minimal use of matrix and vector algebra, the book covers the causal assumptions of propensity score estimates and their many uses, linking these uses with analysis appropriate for different designs. Thorough coverage of bias assessment, propensity score estimation, and estimate improvement is provided, along with graphical and statistical methods for this process. Applications are included for analysis of variance and covariance, maximum likelihood and logistic regression, two-stage least squares, generalized linear regression, and general estimation equations. The examples use public data sets that have policy and programmatic relevance across a variety of disciplines.

Methodology and Epistemology for Social Sciences

Methodology and Epistemology for Social Sciences Book
Author : Donald T. Campbell
Publisher : University of Chicago Press
Release : 1988-10-27
ISBN : 9780226092485
Language : En, Es, Fr & De

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Book Description :

Selections from the work of an influential contributor to the methodology of the social sciences. He treats: measurement, experimental design, epistemology, and sociology of science each section introduced by the editor, Samuel Overman. Annotation copyright Book News, Inc. Portland, Or.

Quasi experimentation

Quasi experimentation Book
Author : Thomas D. Cook,Donald Thomas Campbell
Publisher : Wadsworth Publishing Company
Release : 1979
ISBN :
Language : En, Es, Fr & De

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Book Description :

This book presents some quasi-experimental designs and design features that can be used in many social research settings. The designs serve to probe causal hypotheses about a wide variety of substantive issues in both basic and applied research. Each design is assessed in terms of four types of validity, with special stress on internal validity. Although general conclusions are drawn about the strengths and limitations of each design, emphasis is also placed on the fact that the relevant threats to valid inference are specific to each research setting. Consequently, a threat that is usually associated with a particular design need not invariably be associated with that design.

Using a Quasi experimental Design to Understand Gender Dynamics in Service Encounters

Using a Quasi experimental Design to Understand Gender Dynamics in Service Encounters Book
Author : Heejung Ro,Marryam Khan
Publisher :
Release : 2019
ISBN : 9781526467508
Language : En, Es, Fr & De

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Book Description :

In service research, an experiment is often used to examine customers' reactions to a certain situation by manipulating the variable(s) of the researcher' interest. However, some variables based on participants' characteristics (e.g., gender) are not suitable to be manipulated due to practical and/or ethical reasons. Alternatively, a quasi-experiment allows researchers to test the hypothesized effects/relationships between variables without random assignment of subjects to groups. This case study describes the process and challenges of conducting a quasi-experiment. The research project used in the case focused on the gender dynamics between the service provider and an Arab customer during intercultural service encounters. While employee's gender and behaviors are manipulated via scenario description and the study participants were randomly assigned to the experimental conditions, customer's gender was determined by participants' self-reported gender; therefore, random assignment was not applied. The case provides detailed discussions on the research design and challenges emerged throughout the research process, including sampling strategies and possible extraneous influences. Implications of this case are valuable in designing and conducting a quasi-experiment in service research.

Canadian Essentials of Nursing Research

Canadian Essentials of Nursing Research Book
Author : Joanne Profetto-McGrath,Denise F. Polit,Cheryl Tatano Beck
Publisher : Lippincott Williams & Wilkins
Release : 2010-01-01
ISBN : 160547729X
Language : En, Es, Fr & De

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Book Description :

"Completely revised With timely content and state-of-the-art research undertaken by Canadian nurse researchers, the Third Edition of this trusted resource provides the guidance you need to effectively critique every aspect of nursing research and apply the results to clinical practice. Canadian Essentials of Nursing Research uses clear, straightforward language and a "user-friendly" presentation to help you understand, retain, and apply fundamental concepts with ease." --Book Jacket.