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Peer reviewedWright, Benjamin D.; Mok, Magdalena – Journal of Applied Measurement, 2000
Presents an overview of Rasch measurement models that begins with a conceptualization of continuous experiences often captured as discrete observations. Discusses the mathematical properties of the Rasch family of models that allow the transformation of discrete deterministic counts into continuous probabilistic abstractions. Also discusses six of…
Descriptors: Item Response Theory, Mathematical Models, Measurement Techniques, Probability
Peer reviewedTague-Sutcliffe, Jean – Information Processing and Management, 1992
Defines the scope and significance of the field of informetrics and relates it to the earlier fields of bibliometrics and scientometrics. Practical and theoretical aspects of informetrics are discussed, including the development of mathematical models and the derivation of measures; and a brief overview of articles in this issue is included. (15…
Descriptors: Bibliometrics, Information Retrieval, Information Science, Mathematical Models
Peer reviewedCohen, Patricia; And Others – Applied Psychological Measurement, 1990
Problems in the measurement of latent variables (LVs) in structural equations causal models are presented, with examples from recent empirical studies. Main issues addressed are (1) two general types of increased operative variables; (2) criteria for indicators of LVs; and (3) disattenuation effects in LV models. (SLD)
Descriptors: Causal Models, Literature Reviews, Mathematical Models, Measurement Techniques
Hambleton, Ronald K. – New Directions for Testing and Measurement, 1980
Latent trait models provide a new scale for reporting educational and psychological measurements. Characteristics, interpretations, and uses of these scales are considered. (Author/RL)
Descriptors: Goodness of Fit, Latent Trait Theory, Mathematical Models, Measurement Techniques
Peer reviewedChatterjee, Sangit; Yilmaz, Mustafa – Applied Psychological Measurement, 1992
The importance of regression diagnostics in detecting influential data points is discussed, and five statistics are recommended for the applied researcher. The suggested diagnostics were used on a dataset of 24 subjects, and effects were analyzed. Colinearity-based diagnostics and diagnostics for a variety of procedures are discussed. (SLD)
Descriptors: Behavioral Science Research, Diagnostic Tests, Equations (Mathematics), Error of Measurement
Download full textRentz, R. Robert; Rentz, Charlotte C. – 1978
Issues of concern to test developers interested in applying the Rasch model are discussed. The current state of the art, recommendations for use of the model, further needs, and controversies are described for the three stages of test construction: (1) definition of the content of the test and item writing; (2) item analysis; and (3) test…
Descriptors: Ability, Achievement Tests, Difficulty Level, Goodness of Fit
Peer reviewedSchwartz, Michael F.; Quarterman, John S. – Internet Research, 1993
Discussion of the growth of the Internet focuses on the rate of growth based on three measurements of changes in reachable Internet services: (1) the rate at which sites initiate network connectivity; (2) the rate at which sites become directly connected; and (3) the rate at which sites distance themselves, usually for security reasons. (Contains…
Descriptors: Access to Computers, Access to Information, Futures (of Society), Information Services
