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Schumacker, Randall – Measurement: Interdisciplinary Research and Perspectives, 2019
The R software provides packages and functions that provide data analysis in classical true score, generalizability theory, item response theory, and Rasch measurement theories. A brief list of notable articles in each measurement theory and the first measurement journals is followed by a list of R psychometric software packages. Each psychometric…
Descriptors: Psychometrics, Computer Software, Measurement, Item Response Theory
Snyder, Patricia A.; Hemmeter, Mary Louise; Fox, Lise; Bishop, Crystal Crowe; Miller, M. David – Grantee Submission, 2013
Fidelity assessment has received renewed attention in recent years, particularly as distinctions have been made in implementation science between intervention fidelity and implementation fidelity. Considering both types of fidelity has been recommended when developing fidelity instruments. In the present article, we describe development of the…
Descriptors: Fidelity, Generalizability Theory, Intervention, Models
Snyder, Patricia A.; Hemmeter, Mary Louise; Fox, Lise; Bishop, Crystal Crowe; Miller, M. David – Journal of Early Intervention, 2013
Fidelity assessment has received renewed attention in recent years, particularly as distinctions have been made in implementation science between intervention fidelity and implementation fidelity. Considering both types of fidelity has been recommended when developing fidelity instruments. In the present article, we describe development of the…
Descriptors: Fidelity, Psychometrics, Rating Scales, Program Implementation
Badjadi, Nour El Imane – Online Submission, 2013
The current paper on writing assessment surveys the literature on the reliability and validity of essay tests. The paper aims to examine the two concepts in relationship with essay testing as well as to provide a snapshot of the current understandings of the reliability and validity of essay tests as drawn in recent research studies. Bearing in…
Descriptors: Essay Tests, Writing Evaluation, Test Validity, Test Reliability
Corkum, Penny; Andreou, Pantelis; Schachar, Russell; Tannock, Rosemary; Cunningham, Charles – Educational and Psychological Measurement, 2007
With increasing interest in studies evaluating treatment outcome in children with attention deficit hyperactivity disorder (ADHD), there is a need for treatment-sensitive instruments that are feasible, yield valid and reliable scores, and measure outcome in a "time-locked" and "situation- and symptom-specific" manner. These instruments are needed…
Descriptors: Attention Deficit Disorders, Children, Evaluation Methods, Generalizability Theory

Brennan, Robert L. – Educational Measurement: Issues and Practice, 1997
The history of generalizability theory (G theory) is told from the perspective of one researcher's experiences, describing psychometric and scientific perspectives that influenced the development of G theory and its adoption. Work that remains to be done in the field is outlined. (SLD)
Descriptors: Educational Testing, Generalizability Theory, Measurement, Psychometrics

McDonald, Roderick P. – Psychometrika, 1986
There is a unity underlying the diversity of models for the analysis of multivariate data. Essentially, they constitute a family of models, most generally nonlinear, for structural/functional relations between variables drawn from a behavior domain. (Author)
Descriptors: Factor Analysis, Generalizability Theory, Latent Trait Theory, Mathematical Models
Espelage, Dorothy L.; Quittner, Alexandra L.; Kamps, Jodi – 1998
Generalizability theory (g-theory) was used, as an alternative to classical test theory, to evaluate measurement error in a behaviorally anchored role-play measure, highlighting the usefulness of this theory in instrument development. G-theory partitions an observed score into the universe score and error scores associated with separate sources of…
Descriptors: Behavior Patterns, Eating Disorders, Error of Measurement, Females
Hambleton, Ronald K.; Swaminathan, H. – 1985
Comments are made on the review papers presented by six Dutch psychometricians: Ivo Molenaar, Wim van der Linden, Ed Roskam, Arnold Van den Wollenberg, Gideon Mellenbergh, and Dato de Gruijter. Molenaar has embraced a pragmatic viewpoint on Bayesian methods, using both empirical and pure approaches to solve educational research problems. Molenaar…
Descriptors: Bayesian Statistics, Decision Making, Elementary Secondary Education, Foreign Countries

van Weeren, J.; Theunissen, T. J. J. M. – Language Learning, 1987
A systematic and explicit approach to evaluation of pronunciation is proposed. Generalizability theory was applied in order to comprise all relevant factors in one psychomotor model. French and German pronunciation tests (in Appendix) were devised and evaluated. Common pronunciation problems for native Dutch speakers were incorporated. (Author/LMO)
Descriptors: Communicative Competence (Languages), Dutch, Error Analysis (Language), Error Patterns