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Articles

"Designing Software to Unify Person-Fit Assessment" by Phillip Isaac Pfleger

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By Phillip Isaac Pfleger, Phillip Isaac, Brigham Young
| scholarsarchive.byu.edu
Abstract Item-response theory (IRT)assumes that the model fits the data. One commonly overlooked aspect of model-fit assessment is an examination of personfit, or person-fit assessment (PFA). One reason that PFA lacks popularity among psychometricians is that comprehensive software is notpresent.This dissertation outlines the development and testing ofa new software package, called wizirt, that will begin to meet this need.
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“It’s So Wonderful Having Different Majors Working Together”: the Development of an Interdisciplinary Design Thinking Minor

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By Jason McDonald, Richard West, Peter Rich, Phillip Isaac Pfleger
| scholarsarchive.byu.edu
Title “It’s So Wonderful Having Different Majors Working Together”: the Development of an Interdisciplinary Design Thinking Minor Authors Jason K. McDonald, Brigham Young UniversityFollow Richard E. West, Brigham Young UniversityFollow Peter J.
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"Exploring Fit for Nonlinear Structural Equation Models" by Phillip Isaac Pfleger

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By Brigham Young, Phillip Isaac Pfleger, Phillip Isaac
| scholarsarchive.byu.edu
Abstract Fit indices and fit measures commonly used to determine the accuracy and desirability of structural equation models are expected to be insensitive to nonlinearity in the data. This includes measures as ubiquitous as the CFI, TLI, RMSEA, SRMR, AIC, and BIC. Despite this, some software will report these measures when certain models are used. Consequently, some researchers may be led to use these fit measures without realizing the impropriety of the act.
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