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The objective of this study was to evaluate the internal structure dimensionality of the Utrech Work Engagement Scale – Student (UWES–9S) and its association with the academic procrastination reported by 321 psychology students from a private university in Cajamarca (Peru) ranging between 17 and 41 years old (79% women; Mage = 22.50 years; 84% between 17 and 25 years old). The UWES-9S and the Academic Procrastination Scale (APS) were used and both a confirmatory and a bifactor analysis were conducted on the UWES–9S, as well as a structural regression analysis that specified the influence of the general and specific dimensions of engagement on the dimensions of academic procrastination. Regarding the results, the bifactor model is the one that best defines the construct, whereas the general dimension of engagement has a greater influence on the dimensions of academic procrastination than the specific ones. The theoretical and practical implications of the findings are discussed, as well as the need to focus on the students’ positive resources in order to achieve greater involvement in their academic work.

Factorial models of Rosenberg’s Self-esteem Scale in Peruvian adolescentsAbstract: The Rosenberg Self-Esteem Scale (RSE) is an instrument widely used and designed to measure self-esteem in a single dimension. The aim of this research was to analyze the internal structure and the reliability of the RSE in Peruvian adolescents. The scale was administered to a total of 715 adolescents (51.3% female) with an average age of 12.20 years. Six models were identified by confirmatory factor analysis, which correspond to factorial structures reported in previous studies. The results showed a better goodness of fit for the one-dimensional model with control of method effects on inverse items, eliminating item 8 due to its ambiguity. Reliability was adequate and was calculated using the omega coefficient. The unifactorial structure of the RSE is discussed and it is concluded that the instrument reports evidence of validity and adequate internal consistency to be used in the Peruvian context.Keywords: Self-esteem; teenagers; validity; reliability.Resumen: La Escala de Autoestima de Rosenberg (RSE) es un instrumento ampliamente utilizado que fue diseñado para medir la autoestima en una sola dimensión. La presente investigación tuvo como objetivo principal analizar la estructura interna y la fiabilidad de la RSE en adolescentes peruanos. La escala fue administrada a un total de 715 adolescentes (51.3% de sexo femenino; M edad = 12.20 años). Se identificaron seis modelos mediante análisis factorial confirmatorio, los cuales corresponden a estructuras factoriales reportadas en estudios previos. Los resultados mostraron mejores bondades de ajuste para el modelo unidimensional con control del efecto del método en ítems inversos eliminando el ítem 8 por su ambigüedad. La fiabilidad fue adecuada y se calculó a través del coeficiente omega. Se discute la estructura unifactorial de la RSE y se concluye que el instrumento proporciona evidencia de validez y consistencia interna adecuadas para ser utilizada en el contexto peruano.Palabras clave: Autoestima; adolescentes; validez; fiabilidad.

This research aims to develop and validate a Spanish version of The Brief Scale of Fear of Loneliness (BSFL). Participants were 1385 youth and adults, 347 from a pilot sample and 1032 from the final version, whose ages were in the range of 18 to 40 years. Two instruments, the Rosenberg Self-Esteem Scale and the De Jong Gierveld Loneliness Scale, in their Peruvian versions, were used to support the relationship with other variables. Results show that the BSFL should be interpreted as a one-dimensional measure, the same ones that were examined at the exploratory level and verified at the confirmatory moment (RMSEA < 0.08, CFI > 0.95), and its reliability is considered good (ω > 0.88). In addition, the quality of the item content was reviewed by six expert judges for relevance and validity, with Aiken's V being greater than 0.70. It is concluded that the BSFL is a valid and precise short instrument that can be used in future research studies.

Se hace un análisis y propuesta para el uso de tres programas estadísticos gratuitos: Jamovi, Jasp y R; que son de interfaz simple, intuitiva y amigable. También se señalan sus ventajas. Palabras clave: Programas estadísticos, Jamovi, Jasp, R.