Search results for "Psychometric"
showing 10 items of 776 documents
Cocaine addiction and personality: a mathematical model.
2010
The existence of a close relation between personality and drug consumption is recognized, but the corresponding causal connection is not well known. Neither is it well known whether personality exercises an influence predominantly at the beginning and development of addiction, nor whether drug consumption produces changes in personality. This paper presents a dynamic mathematical model of personality and addiction based on the unique personality trait theory (UPTT) and the general modelling methodology. This model attempts to integrate personality, the acute effect of drugs, and addiction. The UPTT states the existence of a unique trait of personality called extraversion, understood as a di…
A note on alternative parameterizations of a model for evaluating agreement between two tests.
2004
The agreement between two competing tests which purport to measure the same trait is a common concern in test development. In this paper three alternative parameterizations of the measurement model useful in this context are presented. Both one-factor and two-factor approaches are applied. Lord's classic example, where the main problem is to investigate whether time limits represent an extra speed component in a vocabulary test, is used to illustrate the ideas.
Desarrollo y evaluación psicométrica de una forma abreviada de la escala de posicionamiento ante el diagnóstico enfermero
2013
El Position on Nursing Diagnosis (PND) es una escala que utiliza la técnica del diferencial semántico para medir las actitudes hacia el concepto diagnóstico enfermero. El estudio objetivó desarrollar una forma abreviada de la versión española de esta escala, evaluar sus propiedades psicométricas y eficiencia. Se utilizó un doble enfoque empírico-teórico para obtener una forma reducida del PND, el PND-7-SV, que fuera equivalente a la original. Mediante un diseño transversal a través de encuesta, se evaluó la fiabilidad (consistencia interna y fiabilidad test-retest), validez de constructo (análisis factorial exploratorio, técnica de grupos conocidos y validez discriminante) y de criterio (va…
The effects of children’s reading skills and interest on teacher perceptions of children’s skills and individualized support
2015
This study examined the effects of children’s reading skills and interest in reading-related tasks on teacher perceptions of children’s literacy skills (reading and spelling) and the respective individualized support for children during the first two years of formal schooling. The participants were 334 children and their classroom teachers. Identical measures were administered at three time points (at the beginning of Grade 1 and at the end of Grades 1 and 2). Children’s reading skills were assessed with the word reading fluency test, and their interest in reading was assessed with self-reports. Also, teachers evaluated each child’s level of reading and spelling skills and reported the lev…
Measuring job stress in transportation workers: psychometric properties, convergent validity and reliability of the ERI and JCQ among professional dr…
2021
Abstract Background The accumulated evidence has shown how professional drivers are, in psychosocial terms, among the most vulnerable workforces, and how their crashes (some of them preceded by stressful working conditions) constitute both an occupational and public health concern. However, there is a clear lack of validated tools for measuring stress and other key hazardous issues affecting transport workers, and most of the existing ones, frequently generic, do not fully consider the specific features that properly describe the work environment of professional driving. This study assessed the psychometric properties, convergent validity and consistency of two measures used for researching…
Actitudes hacia la estadística en estudiantes de Ciencias de la Educación : propiedades psicométricas de la versión española del Survey of Attitudes …
2019
The study of attitudes towards statistics is a topic which has aroused the interest of researchers in different countries and at teaching levels. In this work we present an analysis of the psychometric properties, in terms of structural validity and internal consistency, of a Spanish version of the Survey of Attitudes Towards Statistics (SATS-36) administered to education students. The results obtained from the 409 participants indicate a lack of fit for the six-factor model proposed by the authors of the SATS, especially compared with the five-factor model with corrected mistakes that the authors of this work propose. These results coincide with what has been defended by other investigatio…
Estructura factorial y propiedades psicométricas de la time management behavior scale (TMBS) en población universitaria colombiana
2017
Se investigó la estructura factorial de la Time Management Behavior Scale (TMBS) en universitarios colombianos. La gestión del tiempo es un importante predictor del logro estudiantil y clave para la disminución de la deserción universitaria. Participaron 494 estudiantes de primer año de nueve programas en dos universidades de la ciudad de Bogotá. Se comprueba una estructura multidimensional de cuatro subescalas que explicaron el 42.68 % de la varianza total. Se obtuvieron índices de consistencia interna por encima de 0.7 en tres factores y una fiabilidad global de 0.84. Coincidiendo con investigaciones previas, frente a los hombres, las mujeres obtienen puntuaciones superiores en dos de las…
Depth-of-Field of the Accommodating Eye
2014
Our eyes project information from a three-dimensional world to a basically two-dimensional surface, corresponding to the photoreceptor plane in the retina. In theory, only one plane or surface of world can be in focus at one time. However, the eye exhibits a certain tolerance to out-of-focus images, a feature that is known as depth-of-focus (DOF). The corresponding distance range in which the objects are seen “clearly” is known as depth-of-field (DOFi). Although DOF and DOFi refer to an interval of distances or a dioptric range in the image and object space, respectively, both parameters define a similar concept and are usually interchangeable. This article will mainly refer to DOFi because…
Validation of a Portuguese version of the Groningen radiotherapy-induced xerostomia questionnaire
2022
The aim of this study was to validate and determine at pretest level the reliability of the Portuguese version of the Groningen radiotherapy-induced xerostomia questionnaire. This study employed 37 head and neck cancer patients. Each patient signed an informed consent and responded to the Portuguese version of the questionnaire in the form of an interview. This was repeated again after 2 weeks. A standard single question provided a validity check. Data were analyzed using Cronbach?s ? to test its reliability and total and interitem correlation, and intraclass correlation to determine its internal consistency and test-retest reliability. Construct validity supported by objective measurements…
A comparative meta-analysis of TEMPS scores across mood disorder patients, their first-degree relatives, healthy controls, and other psychiatric diso…
2016
Background The Temperament Evaluation Memphis, Pisa, Paris and San Diego Auto-questionnaire (TEMPS) is validated to assess temperament in clinical and non-clinical samples. Scores vary across bipolar disorder (BD), major depressive disorder (MDD), attention-deficit/hyperactivity disorder (ADHD), borderline personality disorder (BPD) and healthy controls (HCs), but a meta-analysis is missing. Methods Meta-analysis of studies comparing TEMPS scores in patients with mood disorders or their first-degree relatives to each other, or to a psychiatric control group or HCs. Results Twenty-six studies were meta-analyzed with patients with BD (n= 2025), MDD (n=1283), ADHD (n=56) and BPD (n=43), relati…