2026-06-29T02:38:03Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1259482025-11-13T01:02:42Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Díaz Morales, Juan Francisco author Puig Navarro, Yaiza author 2022-08-29 The aim of the present study was to adapt the Morningness-Eveningness-Stability Scale improved (MESSi) to the Spanish adolescent population, testing its factor structure and construct validity. The participants were 725 adolescents (52.9% girls; M = 14.8, SD = 1.99) who completed the MESSi, the Morningness Eveningness Scale of Children (MESC), questions about sleep habits adapted from the School Sleep Habits Survey, and self-reported academic performance. The psychometric results support a three-factor model with the factors of morning affect, eveningness, and distinctness, which show good internal consistency. The pattern of correlations between MESSi and the other measures was in the expected direction. The MESC correlated positively with morning affect and negatively with eveningness, whereas distinctness was uncorrelated. Boys reported higher morningness, whereas girls reported higher distinctness. Eveningness was negatively related to academic performance. Overall, the results support the validity and reliability of the Spanish adolescent version of the MESSi. Díaz-Morales, J. F., & Puig-Navarro, Y. (2022). The psychometric properties of the Spanish version of the Morningness-Eveningness Stability Scale improved (MESSi) in adolescents. Chronobiology International, 39(11), 1411–1418. https://doi.org/10.1080/07420528.2022.2115378 10.1080/07420528.2022.2115378 https://hdl.handle.net/20.500.14352/125948 1525-6073 https://doi.org/10.1080/07420528.2022.2115378 The psychometric properties of the Spanish version of the Morningness-Eveningness Stability Scale improved (MESSi) in adolescents