03045nas a2200241   4500008004100000020004100041245017000082210007100252250001500323300001000338490000700348520214300355653001402498653006602512653001102578653001302589100001402602700001202616700001402628700001502642700001702657856012902674       2010                        spa d  a0214-9915 (Print)0214-9915 (Linking)00aDeterioro de parámetros de los ítems en tests adaptativos informatizados: estudio con eCAT [Item parameter drift in computerized adaptive testing: Study with eCAT]0 aDeterioro de parámetros de los ítems en tests adaptativos inform  a2010/04/29  a340-70 v223 a<p>En el presente trabajo se muestra el an&aacute;lisis realizado sobre un Test Adaptativo Informatizado (TAI) dise&ntilde;ado para la evaluaci&oacute;n del nivel de ingl&eacute;s, denominado eCAT, con el objetivo de estudiar el deterioro de par&aacute;metros (parameter drift) producido desde la calibraci&oacute;n inicial del banco de &iacute;tems. Se ha comparado la calibraci&oacute;n original desarrollada para la puesta en servicio del TAI (N= 3224) y la calibraci&oacute;n actual obtenida con las aplicaciones reales del TAI (N= 7254). Se ha analizado el Funcionamiento Diferencial de los &Iacute;tems (FDI) en funci&oacute;n de los par&aacute;metros utilizados y se ha simulado el impacto que sobre el nivel de rasgo estimado tiene la variaci&oacute;n en los par&aacute;metros. Los resultados muestran que se produce especialmente un deterioro de los par&aacute;metros a y c, que hay unimportante n&uacute;mero de &iacute;tems del banco para los que existe FDI y que la variaci&oacute;n de los par&aacute;metros produce un impacto moderado en la estimaci&oacute;n de &theta; de los evaluados con nivel de ingl&eacute;s alto. Se concluye que los par&aacute;metros de los &iacute;tems se han deteriorado y deben ser actualizados.Item parameter drift in computerized adaptive testing: Study with eCAT. This study describes the parameter drift analysis conducted on eCAT (a Computerized Adaptive Test to assess the written English level of Spanish speakers). The original calibration of the item bank (N = 3224) was compared to a new calibration obtained from the data provided by most eCAT operative administrations (N =7254). A Differential Item Functioning (DIF) study was conducted between the original and the new calibrations. The impact that the new parameters have on the trait level estimates was obtained by simulation. Results show that parameter drift is found especially for a and c parameters, an important number of bank items show DIF, and the parameter change has a moderate impact on high-level-English &theta; estimates. It is then recommended to replace the original estimates by the new set. by the new set.</p>
10a*Software10aEducational Measurement/*methods/*statistics & numerical data10aHumans10aLanguage1 aAbad, F J1 aOlea, J1 aAguado, D1 aPonsoda, V1 aBarrada, J R  uhttp://iacat.org/content/deterioro-de-par%C3%A1metros-de-los-%C3%ADtems-en-tests-adaptativos-informatizados-estudio-con-ecat02408nas a2200289   4500008004100000020002200041245010800063210006900171260004500240300001000285490000700295520141000302653003201712653002501744653002501769653002501794653002601819653001801845653003701863653002101900653001301921100001501934700001401949700001901963700002001982856011602002       2007                        eng d  a1015-5759 (Print)00aPsychometric properties of an emotional adjustment measure: An application of the graded response model0 aPsychometric properties of an emotional adjustment measure An ap  bHogrefe & Huber Publishers GmbH: Germany  a39-460 v233 aItem response theory (IRT) provides valuable methods for the analysis of the psychometric properties of a psychological measure. However, IRT has been mainly used for assessing achievements and ability rather than personality factors. This paper presents an application of the IRT to a personality measure. Thus, the psychometric properties of a new emotional adjustment measure that consists of a 28-six graded response items is shown. Classical test theory (CTT) analyses as well as IRT analyses are carried out. Samejima's (1969) graded-response model has been used for estimating item parameters. Results show that the bank of items fulfills model assumptions and fits the data reasonably well, demonstrating the suitability of the IRT models for the description and use of data originating from personality measures. In this sense, the model fulfills the expectations that IRT has undoubted advantages: (1) The invariance of the estimated parameters, (2) the treatment given to the standard error of measurement, and (3) the possibilities offered for the construction of computerized adaptive tests (CAT). The bank of items shows good reliability. It also shows convergent validity compared to the Eysenck Personality Inventory (EPQ-A; Eysenck & Eysenck, 1975) and the Big Five Questionnaire (BFQ; Caprara, Barbaranelli, & Borgogni, 1993). (PsycINFO Database Record (c) 2007 APA, all rights reserved)10acomputerized adaptive tests10aEmotional Adjustment10aItem Response Theory10aPersonality Measures10apersonnel recruitment10aPsychometrics10aSamejima's graded response model10atest reliability10avalidity1 aRubio, V J1 aAguado, D1 aHontangas, P M1 aHernández, J M  uhttp://iacat.org/content/psychometric-properties-emotional-adjustment-measure-application-graded-response-model02850nas a2200241   4500008004100000245018600041210007000227300001200297490000700309520195000316653003002266653002502296653001802321653002502339653001802364653001802382653001102400100001402411700001502425700001902440700002002459856012902479       2005                        eng d00aPropiedades psicométricas de un test Adaptativo Informatizado para la medición del ajuste emocional [Psychometric properties of an Emotional Adjustment Computerized Adaptive Test]0 aPropiedades psicométricas de un test Adaptativo Informatizado pa  a484-4910 v173 aEn el presente trabajo se describen las propiedades psicométricas de un Test Adaptativo Informatizado para la medición del ajuste emocional de las personas. La revisión de la literatura acerca de la aplicación de los modelos de la teoría de la respuesta a los ítems (TRI) muestra que ésta se ha utilizado más en el trabajo con variables aptitudinales que para la medición de variables de personalidad, sin embargo diversos estudios han mostrado la eficacia de la TRI para la descripción psicométrica de dichasvariables. Aun así, pocos trabajos han explorado las características de un Test Adaptativo Informatizado, basado en la TRI, para la medición de una variable de personalidad como es el ajuste emocional. Nuestros resultados muestran la eficiencia del TAI para la evaluación del ajuste emocional, proporcionando una medición válida y precisa, utilizando menor número de elementos de medida encomparación con las escalas de ajuste emocional de instrumentos fuertemente implantados. Psychometric properties of an emotional adjustment computerized adaptive test. In the present work it was described the psychometric properties of an emotional adjustment computerized adaptive test. An examination of Item Response Theory (IRT) research literature indicates that IRT has been mainly used for assessing achievements and ability rather than personality factors. Nevertheless last years have shown several studies wich have successfully used IRT to personality assessment instruments. Even so, a few amount of works has inquired the computerized adaptative test features, based on IRT, for the measurement of a personality traits as it’s the emotional adjustment. Our results show the CAT efficiency for the emotional adjustment assessment so this provides a valid and accurate measurement; by using a less number of items in comparison with the emotional adjustment scales from the most strongly established questionnaires.10aComputer Assisted Testing10aEmotional Adjustment10aItem Response10aPersonality Measures10aPsychometrics10aTest Validity10aTheory1 aAguado, D1 aRubio, V J1 aHontangas, P M1 aHernández, J M  uhttp://iacat.org/content/propiedades-psicom%C3%A9tricas-de-un-test-adaptativo-informatizado-para-la-medici%C3%B3n-del-ajuste