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Author: Jenny Chia Yi Kuang
Publisher:
ISBN: 9780549069539
Category : Difference (Psychology)
Languages : en
Pages : 88
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Book Description
The present Monte Carlo study compared four confirmatory factor analysis (CFA) methods for detecting differential item functioning (DIF). The four methods were the noniterative and iterative mean and covariance structure analysis (MACS) methods, the modification index (MI) method, and the modification index-divided sample (MI-divided) method. Reference and focal groups responded to 12 items with 3 of the 12 items designed to exhibit DIF. Sample sizes of 250 and 500 were examined. In addition, three types of DIF were examined: DIF on loadings, DIF on thresholds, and DIF on both loadings and thresholds. Results indicated that for sample size 250, all methods had good DIF detection rates for DIF on thresholds and for DIF on loadings and thresholds; all methods were not sensitive to DIF on loadings. For sample size 500, all methods had good DIF detection rates for DIF on thresholds and for DIF on loadings and thresholds. With the greater sample size, the noniterative and iterative MACS methods were more sensitive to DIF on loadings. The MI-divided method improved to a lesser degree, but the MI method did not improve at all. For DIF on threasholds for sample size 500, the noniterative MACS, MI, and MI-divided methods had false positive rates that were greater than expected by chance. Only the iterative MACS method maintained the false positive rates at or below that expected by chance.
Author: Jenny Chia Yi Kuang
Publisher:
ISBN: 9780549069539
Category : Difference (Psychology)
Languages : en
Pages : 88
Get Book Here
Book Description
The present Monte Carlo study compared four confirmatory factor analysis (CFA) methods for detecting differential item functioning (DIF). The four methods were the noniterative and iterative mean and covariance structure analysis (MACS) methods, the modification index (MI) method, and the modification index-divided sample (MI-divided) method. Reference and focal groups responded to 12 items with 3 of the 12 items designed to exhibit DIF. Sample sizes of 250 and 500 were examined. In addition, three types of DIF were examined: DIF on loadings, DIF on thresholds, and DIF on both loadings and thresholds. Results indicated that for sample size 250, all methods had good DIF detection rates for DIF on thresholds and for DIF on loadings and thresholds; all methods were not sensitive to DIF on loadings. For sample size 500, all methods had good DIF detection rates for DIF on thresholds and for DIF on loadings and thresholds. With the greater sample size, the noniterative and iterative MACS methods were more sensitive to DIF on loadings. The MI-divided method improved to a lesser degree, but the MI method did not improve at all. For DIF on threasholds for sample size 500, the noniterative MACS, MI, and MI-divided methods had false positive rates that were greater than expected by chance. Only the iterative MACS method maintained the false positive rates at or below that expected by chance.
Author: Ratchaneewan Wanichtanom
Publisher:
ISBN:
Category : Difference (Psychology)
Languages : en
Pages : 362
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Book Description
Author: Pierre Jacques
Publisher:
ISBN:
Category :
Languages : en
Pages : 106
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Book Description
Author: Timothy A. Brown
Publisher: Guilford Publications
ISBN: 146251779X
Category : Science
Languages : en
Pages : 482
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Book Description
This accessible book has established itself as the go-to resource on confirmatory factor analysis (CFA) for its emphasis on practical and conceptual aspects rather than mathematics or formulas. Detailed, worked-through examples drawn from psychology, management, and sociology studies illustrate the procedures, pitfalls, and extensions of CFA methodology. The text shows how to formulate, program, and interpret CFA models using popular latent variable software packages (LISREL, Mplus, EQS, SAS/CALIS); understand the similarities ...
Author: Alex C. Michalos
Publisher: Springer
ISBN: 9789400707528
Category : Social Science
Languages : en
Pages : 7347
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Book Description
The aim of this encyclopedia is to provide a comprehensive reference work on scientific and other scholarly research on the quality of life, including health-related quality of life research or also called patient-reported outcomes research. Since the 1960s two overlapping but fairly distinct research communities and traditions have developed concerning ideas about the quality of life, individually and collectively, one with a fairly narrow focus on health-related issues and one with a quite broad focus. In many ways, the central issues of these fields have roots extending to the observations and speculations of ancient philosophers, creating a continuous exploration by diverse explorers in diverse historic and cultural circumstances over several centuries of the qualities of human existence. What we have not had so far is a single, multidimensional reference work connecting the most salient and important contributions to the relevant fields. Entries are organized alphabetically and cover basic concepts, relatively well established facts, lawlike and causal relations, theories, methods, standardized tests, biographic entries on significant figures, organizational profiles, indicators and indexes of qualities of individuals and of communities of diverse sizes, including rural areas, towns, cities, counties, provinces, states, regions, countries and groups of countries.
Author: Gregory Camilli
Publisher: SAGE
ISBN: 9780803944169
Category : Business & Economics
Languages : en
Pages : 196
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Book Description
In this book, the authors provide a cogent review of statistical and interpretive procedures that, in combination, can be used to reduce the likelihood that tests contain items that favor members of one gender, age, racial, or ethnic group over equally able members of another group, for reasons that are unrelated to the objectives and purposes of measurement. Such test items are said to be biased against the equally able members of the group that is not favored. The methods described and illustrated in this book have the potential to reducing the incidence of tests that are, in their construction, biased against members of one or more groups. These methods have the potential of controlling an important source of invalidity when test results are interpreted.
Author: Barbara M. Byrne
Publisher: Psychology Press
ISBN: 1134809417
Category : Psychology
Languages : en
Pages : 442
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Book Description
This book illustrates the ease with which various features of LISREL 8 and PRELIS 2 can be implemented in addressing research questions that lend themselves to SEM. Its purpose is threefold: (a) to present a nonmathmatical introduction to basic concepts associated with SEM, (b) to demonstrate basic applications of SEM using both the DOS and Windows versions of LISREL 8, as well as both the LISREL and SIMPLIS lexicons, and (c) to highlight particular features of the LISREL 8 and PRELIS 2 progams that address important caveats related to SEM analyses. This book is intended neither as a text on the topic of SEM, nor as a comprehensive review of the many statistical funcitons available in the LISREL 8 and PRELIS 2 programs. Rather, the intent is to provide a practical guide to SEM using the LISREL approach. As such, the reader is "walked through" a diversity of SEM applications that include both factor analytic and full latent variable models, as well as a variety of data management procedures.
Author: Steven J. Osterlind
Publisher: SAGE Publications
ISBN: 1483389413
Category : Social Science
Languages : en
Pages : 105
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Book Description
This new edition presents an up-to-date description of differential item functioning. It describes varying procedures for addressing DIF in practical testing contexts. The authors present useful examples and studies of DIF that readers may employ as a guide in their own work. They also cover major statistical packages that can be employed in DIF analysis (e.g., SPSS, SAS, M+, Minitab, and Systat). This text is ideal for the measurement professional or advanced student who deals with educational or psychological assessment.
Author: Peter M. Fayers
Publisher:
ISBN: 9780198527695
Category : Medical
Languages : en
Pages : 490
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Book Description
Researchers in all clinical fields are fully aware of the importance of Quality of Life measurements in judging the efficacy of a given treatment. Psychological criteria play an important role in this evaluation. Assessment of Quality of Life in Clinical Trials: methods and practice explores the current state of the art and illustrates the benefits and potential of health related quality of life assessment in clinical trials. It covers a wide range of analytical issues, emphasizing new and innovative approaches that are of practical and clinical importance.
Author: Steven J. Osterlind
Publisher: SAGE
ISBN: 1412954940
Category : Mathematics
Languages : en
Pages : 105
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Book Description
Differential Item Functioning, Second Edition is a revision of the 1983 title Test Item Bias. In the past 23 years, differential item performance has assumed a level of attention unimagined in the early 1980s. Then, only a few tests and assessment programs attended to "item bias," while doing so is now a mandatory step in any responsible assessment program. Also, technical advances, such as the widespread use of item response theory, have pushed the field of differential performance to levels of technical sophistication far beyond what was practiced years ago. This new edition presents an up-to-date description of DIF; describes varying procedures for addressing DIF in practical testing contexts; presents useful examples and studies of DIF that readers may employ as a guide in their own DIF work; and briefly describes relevant features of major statistical packages that can be employed in DIF analysis (e.g., SPSS, SAS, M+, Minitab, and Systat). This text is ideal for the measurement professional or advanced student who deals with educational or psychological assessment. Readers need only have a preliminary background in tests and measurement, including some beginning statistics and elementary algebra, in order to find this volume useful.
