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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.

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Genre: Psychology
Author: Donald T. Campbell
Publisher: Ravenio Books
Release: 2015-09-03
File: 84 Pages
ISBN-13:

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Genre: Experimental design
Author: Donald T. Campbell
Publisher:
Release: 1969
File: 84 Pages
ISBN-13: OCLC:1024827318

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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.

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Genre: Psychology
Author: WS. SHADISH
Publisher: Wadsworth Publishing Company
Release: 2002
File: 623 Pages
ISBN-13: UOM:39015061304716

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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.

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Genre: Social Science
Author: Bruce A. Thyer
Publisher: Oxford University Press
Release: 2012-02-16
File: 203 Pages
ISBN-13: 9780195387384

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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.

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Genre: Social Science
Author: William M. Holmes
Publisher: SAGE Publications
Release: 2013-06-10
File: 360 Pages
ISBN-13: 9781483310817

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From an expert in the research methods field, Research Methods: The Concise Knowledge Base was written specifically for undergraduates. Trochim streamlined and clarified explanations of fundamental, yet difficult, concepts in his familiar, engaging style. With this text, students will learn about the relationship between theory and practice, which will help them become better researchers and better consumers of research. From an expert in the research methods field, Research Methods: The Concise Knowledge Base was written specifically for undergraduates. Trochim streamlined and clarified explanations of fundamental, yet difficult, concepts in his familiar, engaging style. With this text, students will learn about the relationship between theory and practice, which will help them become better researchers and better consumers of research.

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Genre: Research
Author: William M. K. Trochim
Publisher: Atomic Dog Publishing
Release: 2005
File: 270 Pages
ISBN-13: 1592601464

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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.

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Genre: Science
Author: Thomas D. Cook
Publisher: Wadsworth Publishing Company
Release: 1979
File: 405 Pages
ISBN-13: STANFORD:36105037435018

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In an era of curricular changes and experiments and high-stakes testing, educational measurement and evaluation is more important than ever. In addition to expected entries covering the basics of traditional theories and methods, other entries discuss important sociopolitical issues and trends influencing the future of that research and practice. Textbooks, handbooks, monographs and other publications focus on various aspects of educational research, measurement and evaluation, but to date, there exists no major reference guide for students new to the field. This comprehensive work fills that gap, covering traditional areas while pointing the way to future developments. Features: Nearly 700 signed entries are contained in an authoritative work spanning four volumes and available in choice of electronic and/or print formats. Although organized A-to-Z, front matter includes a Reader’s Guide grouping entries thematically to help students interested in a specific aspect of education research, measurement, and evaluation to more easily locate directly related entries. (For instance, sample themes include Data, Evaluation, Measurement Concepts & Issues, Research, Sociopolitical Issues, Standards.) Back matter includes a Chronology of the development of the field; a Resource Guide to classic books, journals, and associations; and a detailed Index. Entries conclude with References/Further Readings and Cross References to related entries. The Index, Reader’s Guide themes, and Cross References will combine to provide robust search-and-browse in the e-version.

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Genre: Education
Author: Bruce B. Frey
Publisher: SAGE Publications
Release: 2018-01-29
File: 2000 Pages
ISBN-13: 9781506326160

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This open educational resource is currently in development. Please be aware that there might be updates throughout the semester as we continue adding and editing content, testing for accessibility, and incorporating feedback from pilot semester(s). If you need an accessibility accommodation or have questions about the use of this text, please contact OER services at pressbooks@uta.eduAs an introductory textbook for social work students studying research methods, this book covers various aspects of quantitative or qualitative research design. This text is currently in the pilot stage Fall 2019 with an anticipated publication date of January 2020. We recommend that you use the Chrome web browser at this time. Please be aware that there might be some cosmetic tweaks throughout the semester as we continue testing for browser support, accessibility, and export types.

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Genre:
Author: Rebecca Mauldin
Publisher:
Release: 2020
File: Pages
ISBN-13: 098988788X

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A complete guide to cutting-edge techniques and best practices for applying covariance analysis methods The Second Edition of Analysis of Covariance and Alternatives sheds new light on its topic, offering in-depth discussions of underlying assumptions, comprehensive interpretations of results, and comparisons of distinct approaches. The book has been extensively revised and updated to feature an in-depth review of prerequisites and the latest developments in the field. The author begins with a discussion of essential topics relating to experimental design and analysis, including analysis of variance, multiple regression, effect size measures and newly developed methods of communicating statistical results. Subsequent chapters feature newly added methods for the analysis of experiments with ordered treatments, including two parametric and nonparametric monotone analyses as well as approaches based on the robust general linear model and reversed ordinal logistic regression. Four groundbreaking chapters on single-case designs introduce powerful new analyses for simple and complex single-case experiments. This Second Edition also features coverage of advanced methods including: Simple and multiple analysis of covariance using both the Fisher approach and the general linear model approach Methods to manage assumption departures, including heterogeneous slopes, nonlinear functions, dichotomous dependent variables, and covariates affected by treatments Power analysis and the application of covariance analysis to randomized-block designs, two-factor designs, pre- and post-test designs, and multiple dependent variable designs Measurement error correction and propensity score methods developed for quasi-experiments, observational studies, and uncontrolled clinical trials Thoroughly updated to reflect the growing nature of the field, Analysis of Covariance and Alternatives is a suitable book for behavioral and medical scineces courses on design of experiments and regression and the upper-undergraduate and graduate levels. It also serves as an authoritative reference work for researchers and academics in the fields of medicine, clinical trials, epidemiology, public health, sociology, and engineering.

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Genre: Mathematics
Author: Bradley Huitema
Publisher: John Wiley & Sons
Release: 2011-10-24
File: 480 Pages
ISBN-13: 1118067460

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