RT Journal Article T1 Circadian typology is related to resilience and optimism in healthy adults A1 Antúnez-Vílchez, Juan Manuel A1 Navarro-Humanes, José Francisco A1 Adan, Ana K1 Ritmos circadianos AB The relationships between circadian typology and several aspects related to mental health, such as satisfaction with life, emotional intelligence, perceived well-being and psychopathological symptomatology have been documented. However, their relationships with two psychological strengths such as resilience and optimism have not been examined yet. Therefore, the purpose of the present study was to explore whether circadian typology is related to both measures, taking into consideration the possible influence of sex. A sample of 1922 participants (978 men), aged between 18 and 60 yrs (30.08 ± 10.53) completed the reduced Morningness-Eveningness Questionnaire (rMEQ), the 10-item Connor-Davidson Resilience Scale (10-item CD-RISC) and the Life Orientation Test-Revised (LOT-R). Circadian typology was associated with different values in resilience (F(2,1915) = 45.89; p < 0.001; [Formula: see text]( )= 0.046) and optimism (F(2,1915) = 37.74; p < 0.001; [Formula: see text]( )= 0.038), independently of the sex. Morning-type subjects showed the highest resilience and optimism scores while the lowest scores were shown by evening-type, exhibiting the neither-type subjects intermediate scores (p < 0.007, in all cases). These results suggest that evening-type subjects could display less capacity to face adversity and adapt positively, as well as less expectance of the occurrence of positive events compared to neither and morning-type individuals. In addition, these results provide new evidence that might improve our understanding about the relationships between circadian typology and psychological traits and disorders. Although future studies with longitudinal designs are needed, the obtained results emphasize that the evening-type could be a risk factor for the development of psychological problems and mental disorders, whereas the morning-type could be considered as a protective factor. PB Taylor and Francis YR 2015 FD 2015 LK https://hdl.handle.net/10630/33691 UL https://hdl.handle.net/10630/33691 LA eng NO Juan Manuel Antúnez, José Francisco Navarro & Ana Adan (2015) Circadian typology is related to resilience and optimism in healthy adults, Chronobiology International, 32:4, 524-530, DOI: 10.3109/07420528.2015.1008700 NO Ministerio de Economía y Competitividad (PSI2009-12300)Ministerio de Educación, Cultura y Deporte (AP2010-3244) DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 20 ene 2026