A unifying framework for generalized multilevel structural equation modeling is introduced. The models in the framework, called generalized linear latent and mixed models (GLLAMM), combine features of generalized linear mixed models (GLMM) and structural equation models (SEM) and consist of a response model and a structural model for the latent…

A new methodology is proposed for the simultaneous reduction of units, variables, and occasions of a three-mode data set. Units are partitioned into a reduced number of classes, while, simultaneously, components for variables and occasions accounting for the largest common information for the classification are identified. The model is a…

The tetrachoric correlation describes the linear relation between two continuous variables that have each been measured on a dichotomous scale. The treatment of the point estimate, standard error, interval estimate, and sample size requirement for the tetrachoric correlation is cursory and incomplete in modern psychometric and behavioral…

The STAT is an interactive screening measure for autism that assesses behaviors in the areas of play, communication, and imitation skills. In Study 1, signal detection procedures were employed to identify a cutoff score for the STAT using developmentally matched groups of 2-year-old children with autism and with nonspectrum disorders. The…

The use of "neutral or unsure" on an instrument designed to measure identity development in college students was explored. The nominal response model from item response theory was used to evaluate whether "neutral or unsure" was used more frequently by those at low or middle levels of development; the results depended on the subscale and sometimes…

The 25-item Clark-Beck Obsessive-Compulsive Inventory (CBOCI) was developed to assess the frequency and severity of obsessive and compulsive symptoms. The measure uses a graded-response format to assess core symptom features of obsessive-compulsive disorder (OCD) based on Diagnostic and Statistical Manual of Mental Disorders (4th ed.; American…

Questionnaires for measuring patients' feelings or beliefs are commonly used in clinical settings for diagnostic purposes, clinical decision making, or treatment evaluation. Raw scores of a patient can be evaluated by comparing them with norms based on a reference population. Using the Pain Cognition List (PCL-2003) as an example, this article…

This study used kernel-smoothing procedures to estimate the item characteristic functions (ICFs) of a set of continuous personality items. The nonparametric ICFs were compared with the ICFs estimated (a) by the linear model and (b) by Samejima's continuous-response model. The study was based on a conditioned approach and used an error-in-variables…

We present a "practitioner's guide" to social skills assessment and intervention with students attending public schools. Important characteristics of assessment instruments are discussed, including psychometric properties and strategies applicable to school settings. We then review several social skills assessment protocols and rating scales that…

The focus of this report is to summarize the research that has been conducted thus far on the new SAT Writing section. The evidence provided reveals that the new writing section has satisfactory psychometric quality in that its reliability is acceptable; it is significantly related to first-year college GPA and college English grades; it has been…

Background: "Volume & Heaviness" was one of three Piagetian tests used in the CSMS survey in 1975/76. However unlike psychometric tests showing the Flynn effect--that is with students showing steady improvements year by year requiring tests to be restandardized--it appeared that the performance of Y7 students has recently been…

This article describes the development and psychometric assessment of a multidimensional, domain-specific Career Locus of Control Scale (CLOC) designed for use with adolescent school pupils engaged in the career development and decision-making process. A 47-item version was administered to 743 school pupils, age 15 or 16 years evenly split between…

This study examined the ethical sensitivity of 2 Finnish urban schools' 7th- to 9th-grade students (N = 249) with the Ethical Sensitivity Scale Questionnaire (ESSQ), based on Narvaez' (2001) operationalization of ethical sensitivity. Three research questions were formulated: (1) Are the psychometric properties of ESSQ scientifically valid? Are…

This paper defines Bayesian network models and examines their applications to IRT-based cognitive diagnostic modeling. These models are especially suited to building inference engines designed to be synchronous with the finer grained student models that arise in skills diagnostic assessment. Aspects of the theory and use of Bayesian network models…

Purpose: Most writings on Organizational Citizenship Behavior (OCB) to date have focused on analysis at the individual level and paid less attention to other analytical frameworks at the group level (i.e., team, unit, or organization). This article approaches OCB from the less conventional perspective of group-level activities and uses it to…