BACKGROUND impairment of functional abilities represents a crucial component of dementia diagnosis. Current functional measures rely on the traditional aggregate method of summing raw scores. While this summary score provides a quick representation of a person's ability, it disregards useful information on the item level. OBJECTIVE to use item response theory (IRT) methods to increase the int...

Task difficulty is a critical issue affecting test developers. Controlling or balancing the item difficulty of an assessment improves its validity and discrimination. Test developers construct tests from the cognitive perspective, by making the test constructing process more scientific and efficient; thus, the scores obtained more precisely represent the proficiency level. In this paper, a fram...

This paper shows the impact of differential discrimination on the results of vertical equating when the Rasch model is applied. It is shown that where there is differential discrimination, relevant items contribute information, for the purpose of vertical equating, that contains systematic error. The impact of differential item discrimination on vertical equating is examined from a theoretical ...

Although animals of many species have been shown to discriminate between visual-spatial arrays or auditory-temporal sequences based on numerosity, most of the evidence for numerosity discrimination derives from experiments involving extensive laboratory training. Under these conditions, animals' discrimination of two numerosities depends on their ratio and is independent of their absolute value...

objective: this study has used item response theory (irt) to examine the psychometric properties of health-related quality-of-life. method: this investigation is a descriptive- analytic study. subjects were 370 undergraduate students of nursing and midwifery who were selected from tabriz university of medical sciences. all participants were asked to complete the farsi version of whoqol-bref. sa...

Environmental knowledge is considered an important pre-cursor to pro-environmental behaviour. Though several tools have been designed measure environmental knowledge, there remains no concise, psychometrically grounded measure. We validated existing in a British sample, confirming that it had good one- and three-factor structures line with previous literature. For the first time this field, we ...

Considering the impact of recommendations on item providers is one duties multi-sided recommender systems. Item are key stakeholders in online platforms, and their earnings plans influenced by exposure items receive recommended lists. Prior work showed that certain minority groups providers, characterized a common sensitive attribute (e.g., gender or race), being disproportionately affected ind...

The QoL5 questionnaire is five items self-report to measure the quality of life, based on integrated life (IQOL) theory by S. Ventegodt. validation test aims determine psychometric properties questionnaire. translation and adaptation stages are carried out International Test Committee (ITC) manual. sample consisted 217 people obtained a convenience sampling. Data analysis showed that was reliab...

BACKGROUND This study examines exposure to perceived discrimination and its association with depression among low-income, Latina male-to-female transgender women as well as evaluates the impact of sexual partner violence and mistreatment on depression. METHODS A total of 220 Latina male-to-female transgender women who resided in Los Angeles, California, were recruited through community based ...

Objective The development and validation of a health behaviour scale for cancer patients (HBSCP). Methods An 11-item was developed based on existing literature prevention care. Identified dimensions include the following: nutrition weight, physical activity, nicotine alcohol use, stress, adherence to medical services. Experts rated items in regard content wording. tested two cross-sectional dat...