Titlebook: Rasch Analysis in the Human Sciences; William J. Boone,John R. Staver,Melissa S. Yale Book 2014 Springer Netherlands 2014 Rasch measuremen

IVORY

How Well Does That Rating Scale Work? How Do You Know, Too?,n-Rasch technique is presented that involves a global examination of the percentage of all answers to all items for each rating category. Next is a discussion of the ins and outs of evaluating the probability of a given respondent selecting a specific rating category for a particular item. We call t

Harass

Person Reliability, Item Reliability, and More,Rasch attempts to summarize reliability which are often used in research. Next, Rasch person reliability and item reliability are presented. Consideration is made as to whether one should look at all items and all persons in evaluating indices such as person reliability and item reliability or shoul

BRIEF

What Is an Ogive? How Do I Use It?,e curve. The Winsteps score-measure table is used to aid readers in a creation of an ogive. Following this plotting of raw scores and measures, the chapter considers different pairs of students and how the same difference in raw scores is not the same difference in measures. The example is then exte

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Differential Item Functioning,elp define what DIF is and why it is important to understand. Readers are provided with guidance on how to interpret numerous critical Winsteps tables which help one identify items exhibiting DIF. Particular attention is given to how DIF is related to bias and construct validity. The chapter conclud

GLIDE

Linking Surveys and Tests,n be conducted in order to link forms. Also, we provide guidance to strategies one uses to select the items to “l(fā)ink” forms, thus allowing all respondents to be expressed on the same measurement scale, even though not all respondents completed all items. The chapter also explains how to double-check

Palter

,Setting Pass–Fail Points and Competency Levels,ly compute “pass/fail” points for a test. This point can be thought of as the location of a line at a particular measure on a Wright map. Persons below the line fail. Some research projects may require a number of horizontal lines, for example, a line differentiating failing students from those stud

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Quality of Measurement and Sample Size,nsidered. Of importance to the measurement of persons and items is the sample size of items and persons. This chapter introduces the issue of sample size and the myriad of issues related to sample size when they conduct measurement. Researchers can obtain a great deal of information much from resear

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