Evidence of validity of a Jealousy Scale in Peruvian youth and adults: An item response theory approach / Evidencia de validez de una Escala de Celos en jóvenes y adultos peruanos: un enfoque de teoría de respuesta al ítem

Abstract Introduction/Objective: In romantic relationships, jealousy can influence how individuals feel emotionally and interact with their partners. This study analysed the metric properties of the Brief Jealousy Scale (BJS) in young adults from Peru using current methods. Method: A total of 297 individuals were selected to participate in the study. They averaged 26.52 years of age (with a variation of 7.75 years), and 74.10% were women. The study used a technique called Item Response Theory (IRT) with a two-parameter model to confirm the structure and reliability of the BJS. Result: The BJS demonstrated high reliability and fit through goodness-of-fit indices. DIF analysis indicated slight gender biases in some items, reflecting differences in the perception of jealousy between men and women. Conclusions: The study highlights the importance and usefulness of the Jealousy Scale in relationships, as it helps to understand relationship dynamics and guides interventions. Future studies should address issues such as participant selection and study design and examine whether the scale can be used in different cultures.

Resumen Introducción/Objetivo: En las relaciones de pareja, los celos pueden influir en cómo se sienten emocionalmente y en cómo interactúan las personas con su pareja. Este estudio analizó las propiedades métricas de la Escala Breve de Celos en jóvenes y adultos de Perú utilizando métodos actuales. Método: Se seleccionaron 297 personas para participar en el estudio. Tenían en promedio 26.52 años (con una variación de 7.75 años) y el 74.10 % eran mujeres. El estudio utilizó una técnica llamada teoría de respuesta al ítem (IRT) con un modelo de dos parámetros para confirmar la estructura y fiabilidad del BJS. Resultados: El BJS demostró una gran confiabilidad y ajuste a través de índices de bondad de ajuste. El análisis DIF indicó ligeros sesgos de género en algunos ítems, lo que refleja diferencias en la percepción de los celos entre hombres y mujeres. Conclusiones: El estudio resalta la importancia y utilidad de la Escala de Celos en las relaciones, ya que ayuda a entender cómo funcionan y a saber cómo intervenir. En el futuro, los estudios deben ocuparse de problemas como la selección de participantes y el tipo de estudio realizado, y examinar si la escala se puede usar en diferentes culturas.

The scale of myths of romantic love: Evidence of validity and reliability of a brief scale in Peru.

The study aimed to provide validity evidence and reliability of the Scale of Myths of Romantic Love (SMRL) in Peru among young and adult individuals. Focusing on how romantic love myths affect relationship satisfaction and their ties to interpersonal violence, sexism, and gender inequality, the methodology involved 308 participants, mainly females (75%), using the SMRL and Relationship Assessment Scale. Bayesian Confirmatory Factor Analysis (BCFA) assessed the scale's structure and reliability, complemented by descriptive statistics and correlation analyses to examine the myths' impact on intimate relationships. Results showed the SMRL's two-dimensional structure, confirming its robust psychometric properties and satisfactory internal consistency. Descriptive findings revealed a skeptical view of traditional romantic myths among participants, indicating the scale's good reliability and successful adaptation to the Peruvian context. This validation highlights how debunking romantic love myths can improve relationship dynamics and satisfaction and addresses their wider societal effects.

Translation and content validity of a brief scale of mindfulness for Peruvian adolescents. / Traducción y validez de contenido de una escala breve de mindfulness para adolescentes peruanos.

OBJECTIVE: To translate into Spanish and analyze the evidence of validity based on the content of the items in the brief version of the Mindful Attention Awareness Scale of 5 items (MAAS-5). METHOD: An instrumental study that involved the translation to Spanish of the items of the short version of the MAAS-5 scale, using the back-translation procedure. We analyzed the evidence of validity based on the test content, with the participation of a total of 14 expert judges. The degree of clarity, coherence and relevance of the items was quantified using the Aiken V coefficient and their 95% confidence intervals using an ad hoc template developed in the MS Excel program. RESULTS: The items of the MAAS-5 show favourable evaluations of their clarity, coherence and relevance, where all the values of V were statistically significant and greater than 0.70. On the other hand, the lower limit of 95% confidence intervals of all the items satisfies the criterion at population level (Li˃0.59). CONCLUSION: The empirical evidence of validity based on the test content of the MAAS-5 reports that all are sufficiently relevant, coherent and clear to adequately represent the construct mindfulness, both at sample and population level. This suggests that the MAAS-5 can be a brief and useful measure to assess mindfulness. On the other hand we suggest carrying out further studies that analyze other sources of evidence of validity of the MAAS-5.