The Boxall Profile provides a framework for the structured observation of children in nurture groups. It is a detailed and rigorously trialled normative diagnostic instrument developed for teachers and teaching assistants to measure children's levels of emotional and behavioural functioning. Moreover, it highlights specific targets for…

We study the automatic identification of educational items worthy of content authors' attention. Based on the results of such analysis, content authors can revise and improve the content of learning environments. We provide an overview of item properties relevant to this task, including difficulty and complexity measures, item discrimination, and…

The present study examined the measurement properties of the Emotional and Behavioral Screener (EBS), a universal screening instrument which identifies students presenting with emotional and behavioral problems. The primary research questions sought to examine the degree to which the EBS item responses fit the Rasch model through evaluating fit of…

The purpose of this study was to examine specific aspects of the reliability and validity of age band 1 of the Movement Assessment Battery for Children-Second Edition (MABC-2) (Henderson, Sugden, & Barnett, 2007) in Greek preschool children. One hundred and eighty-three children participated in the study; the children ranged in age from 36 to…

This study examined the amount of time that different ability-level examinees spend on questions they answer correctly or incorrectly across different pretest item blocks presented on a fixed-length, time-restricted computerized adaptive testing (CAT). Results indicate that different ability-level examinees require different amounts of time to…

Using Rasch analysis, the psychometric properties of a newly developed 35-item parent-proxy instrument, the Caregiver Assessment of Movement Participation (CAMP), designed to measure movement participation problems in children with Developmental Coordination Disorder, were examined. The CAMP was administered to 465 school children aged 5-10 years.…

The attribute hierarchy method (AHM) is a psychometric procedure for classifying examinees' test item responses into a set of structured attribute patterns associated with different components from a cognitive model of task performance. Results from an AHM analysis yield information on examinees' cognitive strengths and weaknesses. Hence, the AHM…

The "Pervasive Developmental Disorder Screening Test-II (PDDST-II)--Early Childhood Screener for Autistic Spectrum Disorders" is a clinical screening tool for pervasive developmental disorders (PDD) or autism spectrum disorders (ASD) designed for use by nonspecialist clinicians. It was designed to differentiate children as young as 18 months who…

It is sometimes sensible to think of the fundamental unit of test construction as being larger than an individual item. This unit, dubbed the testlet, must pass muster in the same way that items do. One criterion of a good item is the absence of differential item functioning (DIF). The item must function in the same way as all important…

The stability of bias estimates from J. Schueneman's chi-square method, the transformed Delta method, Rasch's one-parameter residual analysis, and the Mantel-Haenszel procedure, were compared across small and large samples for a data set of 30,000 cases. Bias values for 30 samples were estimated for each method, and means and variances of item…

Investigations into item bias provide an empirical basis for the identification and elimination of test items which appear to measure different traits across populations or cultural groups. The Psychometric rationales for six approaches to the identification of biased test items are reviewed: (1) Transformed item difficulties: within-group…