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Browsing by Subject "Dimensionalidad"

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    Análisis dimensional de las opiniones de los alumnos universitarios sobre sus profesores: comparación entre técnicas paramétricas y no-paramétricas
    (Universidad de Murcia. Servicio de Publicaciones, 2002) Apodaca Urquijo, Pedro Miguel; Grad, Héctor
    The possibilities and limitations of the sumative and formative functionalities in the use of the students´ratings are discussed. These functionalities are closely related to the unidimensional or multidimensional character of such surveys. A revision of the dimensions proposed by diverse authors were made and a great agreement found. The contributions and limitations of parametric and nonparametric statistical techniques (LISREL versus SSA) are discussed in order to analyze the structure and dimensionality of the construct of educational competence. These techniques were applied to ample samples of two universities answering to two different instruments. Results found by means of LISREL are consistent with previous similar studies. Results found by means of SSA bring out evidence for a nonlinear reconceptualization of the construct educational competence that suitably integrates the traditional unidimensional and multidimensional conceptualizations. 
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    Una lectura ontológica de Fenomenología de la percepción
    (Universidad de Murcia, 2015) Riera Jaume, Pedro
    Fenomenología de la percepción ha sido acusada de no elevar la descripción feno- menológica a un orden ontológico. En este artí- culo intento demostrar que, pese a la falta de un planteo específico del problema ontológico, hay abundantes muestras en la obra de una fenomeno- logía de la fenomenología que al llevar a origen sus conceptos fundamentales, libera otro modo de entender tiempo, espacio o ser. El esbozo de una ontología implícita –como reconoce Merleau- Ponty– en las descripciones de Fenomenología de la percepción, es lo que trata de explicitar este artículo señalando como rasgos fundamentales la dimensionalidad, el “ser de encuentro o de rela- ción”, la originariedad o el campo de presencia.
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    Propiedades psicométricas del cuestionario de Autoconcepto AF5
    (Murcia : Servicio de Publicaciones de la Universidad de Murcia, 2011) Esnaola, Igor; Rodríguez, Arantzazu; Goñi, Eider
    El objetivo de esta investigación ha sido analizar las propiedades psicométricas del cuestionario AF5 (García y Musitu, 2001) mediante técnicas exploratorias y confirmatorias en una población del País Vasco. La muestra está compuesta por 1259 participantes entre los 12 y los 84 años, divididos en 702 (55.8%) mujeres y 557 (44.2%) varones. El análisis factorial exploratorio se realizó mediante el paquete estadístico SPSS 17.0 y para el análisis factorial confirmatorio se utilizó el programa LISREL 8.3. Los resultados señalan que el cuestionario AF5 ofrece índices de fiabilidad superiores a = .71. En cuanto a la factorialidad, tanto el análisis factorial exploratorio como el análisis factorial confirmatorio indican que los resultados no se ajustan al modelo pentafactorial original. El modelo que mejor se ajusta ha sido uno compuesto por seis factores, en el que la dimensión física se divide en dos factores (atractivo físico y condición física).
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    Psychometric properties of the Life Orientation Test (LOT-R) for sport
    (Universidad de Murcia. Servicio de publicaciones, 2021) Angelo, Daniela Lopes; Bido, Diógenes; Corrêa, Mariana; Hupfer, Bruno; Brandão, Regina Ferreira
    The main objective of this research was to culturally adapt and evaluate the psychometric properties of the Life Orientation Test Revised version for the Brazilian sports context (LOT-R). The sample consisted of 953 young Brazilian athletes of both sexes, with a mean age of 16 years. The results of the confirmatory factor analysis produced two correlated dimensions, reflecting optimism and pessimism, and provided support for a two-factor model. A satisfactory fit was found for LOT-R for sport (LOT-R-Sport) with six items (χ2=4.541, df=8; CFI=1; TLI=1;RMSEA=0 [90%IC = 0.000 -0.024]; SRMR=0.016). Satisfactory tests of internal consistency were also generated through the analysis of factor loadings. The Composite Reliability indices (0.72/ 0.70) were suitablefor Optimism and Pessimism, respectively. Motivation, Resilience and Satisfaction with Life showed positive correlations with Optimism and negative correlations with Pessimism, indicative of convergent validity.The configural, metric and scalar invariance was achieved, indicating that the LOT-R-Sport can measure athletes of different sexes, sports, ages and years of experience equally. Although more studies are needed to confirm the psychometric properties of the instrument, the adaptation of the LOT-R-Sport was the first step in the future works about the influence of Optimism on sports performance.

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