The current study was developed under the larger research project True Times - Morningness-eveningness and time-of-day effects on cognitive performances and emotional states: New lessons from children and adolescents- PTDC/PSI-ESP/32581/2017 and CENTRO-01-0145-FEDER-032581.; The present study primarily aimed to investigate the interactive effect of chronotype and time of day on adolescent’s emotional states. Ch...