Escala de Rosenberg para autoestima: consistencia interna y dimensionalidad en estudiantes de Cartagena, Colombia
Rosenberg' Self-Esteem Scale: Internal Consistency and Dimensionality in Middle-School Student in Cartagena, Colombia
Psychol. av. discip; 9 (2), 2015
Publication year: 2015
El objetivo del estudio fue estudiar la consistencia interna y dimensionalidad de la Escala de Rosenberg para Autoestima, ERA (Rosenberg, 1989) en estudiantes de secundaria de Cartagena, Colombia. Un total de 951 estudiantes con edades entre 10 y 15 años, media de 12,3 años (DE=1,1) y 52,6% de sexo femenino, que cursaban sexto y séptimo grado en varios colegios públicos completaron la ERA; se usó el patrón de respuesta dicotómico. Se calcularon los coeficientes de confiabilidad, Kuder-Richardson (1934) y omega de McDonald (1970) y el coeficiente de unidimensionalidad de Mosier (1943). Se llevaron a cabo análisis factoriales exploratorios para conocer la estructura interna de la ERA. La ERA mostró Kuder-Richardson de 0,63 y coeficiente de Mosier de 0,61 (No es unidimensional). La dimensión/escala 'autoconfianza' presentó Kuder-Richardson y omega de McDonald de 0,76, que explicó 51,1% de la varianza. Y la dimensión/escala 'autodesprecio' obtuvo Kuder-Richardson de 0,55 y omega de McDonald de 0,57, responsable de 38,0% de la varianza. Se concluye que La ERA es una escala bidimensional, 'autoconfianza' y 'autodesprecio'. La escala 'autoconfianza' presenta alta consistencia interna y aceptable solución factorial. Se debe revisar la conceptualización teórica y el contenido de la escala para 'autodesprecio' de la ERA.
The objective of the research was to explore the internal consistency and dimensionality of the Rosenberg Self-Esteem Scale, RSES (Rosenberg, 1989) in middle-school students in Cartagena, Colombia. A total of 951 students, sixth and seventh graders, from several public schools completed the RSES. Dichotomous response pattern was used. Students were aged between 10 and 15 years, mean 12.3 years (SD=1.1); female participants represented 52.6% of the sample. Reliability coefficients, Kuder-Richardson (1934) and McDonald's omega (1970), and coefficient of dimensionality, Mosier (1943) were calculated. Exploratory factor analyses were done to know internal structure of RSES. Kuder-Richardson's coefficient for RSES was 0.63; and Mosier's coefficient, 0.61 (Non unidimensional). The domain/scale 'self-efficacy' presented Kuder-Richardson and McDonald omega coefficients of 0.76; which explained 51.1 % of the variance. And the domain/scale 'worthlessness' showed Kuder-Richardson scored of 0.55 and; McDonald omega, 0.57; which accounted for 38.0% of the variance. As conclusion, RSES is a two-dimensional scale, 'self-efficacy' and 'worthlessness'. The 'self-efficacy' scale shows high internal consistency and acceptable factor solution. Researches should review the theoretical conceptualization and content for the 'worthlessness' scale.