Autopercepción del bienestar del cuidador familiar del adulto mayor y características sociodemográficas

Introducción: La autopercepción del bienestar dimensional se relaciona con características de cuidadoras. Objetivo: Establecer asociación de autopercepción en dimensiones de bienestar y características de cuidadores. Método: Estudio descriptivo, analítico y correlacional. Muestra 300 cuidadores. Matamoros Tamaulipas, México. Cuestionarios: Datos Sociodemográficos, Índice Barthel, Calidad Vida: dimensiones física, psicológica, social; y espiritual, éste con alpha de Cronbach 0.69. Pruebas chi-cuadrada y coeficiente correlación de Pearson. Resultados: Características mayoría mujeres, 42 años, casadas, hija, alfabetizadas, labores hogar, baja escolaridad, sin trabajo o ingresos limitados. Autopercepción con significancia en bienestar general, alfabetización y parentesco; dimensiones física, edad y género; psicológica, escolaridad; social, parentesco y espiritual alfabetización, situación laboral, ocupación y estado civil. Discusión: Características vulneran a cuidadoras a efectos adversos del cuidado y determinan mayor percepción de carga que altera su bienestar dimensional.

Linear low-density polyethylene colored with a nanoclay-based pigment: Morphology and mechanical, thermal, and colorimetric properties

In this study, a novel kind of hybrid pigment based on nanoclays and dyes was synthesized and characterized. These nanoclay-based pigments (NCPs) were prepared at the laboratory with sodium montmorillonite nanoclay (NC) and methylene blue (MB). The cation-exchange capacity of NC exchanged with MB was varied to obtain a wide color gamut. The synthesized nanopigments were thoroughly characterized. The NCPs were melt-mixed with linear low-density polyethylene (PE) with an internal mixer. Furthermore, samples with conventional colorants were prepared in the same way. Then, the properties (mechanical, thermal, and colorimetric) of the mixtures were assessed. The PE–NCP samples developed better color properties than those containing conventional colorants and used as references, and their other properties were maintained or improved, even at lower contents of dye compared to that with the conventional colorants.

Motivational profiles Spanish students of Compulsory Secondary Education: Differential analysis of academic self-attributions

Academic goals and academic self-attributions are relevant variables in school settings. The objective of this study is to identify whether there are combinations of multiple goals that lead to different motivational profiles and to determine whether there are significant differences between the groups obtained regarding causal attributions of success and failure (ability, effort, or external causes) in Mathematics and Language and Literature, and in overall academic performance. The Goal Achievement Tendencies Questionnaire (AGTQ) and the Sydney Attribution Scale (SAS) were administered to a sample of 2022 students of compulsory secondary education, ranging in age from 12 to 16 years (M = 13.81, SD = 1.35). Cluster analysis identified four motivational profiles: a group of students with a high generalized motivation profile, a group of students with low generalized motivation profile, a group of students with predominance of learning goals and achievement goals, and a final group of students with predominance of social reinforcement goals. Results revealed statistically significant differences between the profiles obtained in academic self-attributions.

The SAAS-R: A New Instrument to Assess the School Attitudes of Students with High and Low Academic Achievement in Spain

We examined the psychometric properties of the School Attitude Assessment Survey–Revised in a Spanish population (n = 1,398). Confirmatory factor analysis procedures supported the instrument’s five-factor structure. The results of discriminant analysis demonstrated the predictive power of the School Attitude Assessment Survey–Revised scales as regards academic performance. Implications for education and assessment are discussed.