Background: The Item Response Theory (IRT) has advantages for measuring Health Related Quality of Life (HRQOL) as opposed to the Classical Tests Theory (CTT). Objectives: To present the results of the application of a polytomous model based on IRT, specifically, the Rating Scale Model (RSM), to measure HRQOL with the EORTC QLQ-C30. Methods: 103…

This experiment examined the effects of reinforcement probability on resistance to change of remembering and response rate. Pigeons responded on a two- component multiple schedule in which completion of a variable-interval 20-s schedule produced delayed matching-to-sample trials in both components. Each session included four delays (0.1 s, 2 s, 4…

Experiment 1 investigated the controlling properties of variability contingencies on choice between repeated and variable responding. Pigeons were exposed to concurrent-chains schedules with two alternatives. In the REPEAT alternative, reinforcers in the terminal link depended on a single sequence of four responses. In the VARY alternative, a…

Under the No Child Left Behind Act, states have been required to set minimum proficiency standards that virtually all students must meet by 2014. Sanctions of increasing severity are to be applied to schools that fail to meet interim targets, known as Adequate Yearly Progress (AYP). The authors examine the effect of this legislation using…

Background: The development of youth psychopathology may be associated with direct and continuous contact with a different culture (acculturation) and to distress related to this process (cultural stress). We examine cultural experiences of Puerto Rican families in relation to youth psychiatric symptoms in two different contexts: one in which…

The National FFA Organization's Partners in Active Learning Support (PALS) is a program that utilizes high school members from FFA chapters as peer mentors. The purpose of this study was to examine needs of a sample of PALS advisors and mentors. An on-site pilot study was initially conducted, which included 3 individual interviews with program…

This paper reports a causal-comparative study of science anxiety among Form Four students in Penang. The Wynstra's (1991) Science Anxiety Inventory (SAI), which consists of six factors (i.e., danger anxiety, science test anxiety, math and problem-solving anxiety, squeamish anxiety, performance anxiety, and science classroom anxiety), was…

We examined how children with and without oral language (word-finding) difficulties (WFD) perform on oral reading (OR) versus silent reading recognition (SRR) tasks when reading the same words and how lexical factors influenced OR accuracy, error patterns, and nature of miscues. Primary-grade students were administered an experimental reading…

There is much research that documents what many teachers know, that students struggle with many concepts in probability and statistics. This article presents two sample activities the authors use to help preservice teachers develop ideas about how they can use technology to promote their students' ability to understand mathematics and connect…

This study investigates successful completion at a faith-based organization providing residential substance abuse treatment services. Method: The authors apply a complex systems paradigm using a single moderator variable. The participants are primarily African Americans and most have current criminal justice involvement. Probabilities of treatment…

Experiments that assign intact groups to treatment conditions are increasingly common in social research. In educational research, the groups assigned are often schools. The design of group-randomized experiments requires knowledge of the intraclass correlation structure to compute statistical power and sample sizes required to achieve adequate…

Background: The appropriateness of the "Diagnostic and Statistical Manual of Mental Disorders-Fourth Edition" (DSM-IV) nosology for classifying preschool mental health disturbances continues to be debated. To inform this debate, we investigate whether preschool psychopathology shows differentiation along diagnostically specific lines…

Background: Recent research in the USA and UK indicates that person-centred planning (PCP) can lead to improvements in lifestyle-related outcomes for people with intellectual disabilities (ID). It is clear, however, that the introduction of PCP does not have an equal impact for all participants. The aim of the present paper was to identify factors…

We report on survey data collected from 776 final-year student teachers from 11 higher education institutions in October 2004. The purpose of the survey was to find out how many newly qualified teachers were planning to teach abroad and how many were planning to teach in South Africa. Two issues formed the backdrop of the study: teacher migration…

This research was undertaken as part of the National Centre for Vocational Education Research's (NCVER) in-house research program. The report focuses on individuals who, together with industry, are at the centre of vocational education and training (VET). What is novel about the research is that it looks further than skills and workforce outcomes…