Morning & Evening People Personality | What is a Chronotype? (Circadian Preference)

This video answers the questions: What is the chronotype? Is there a relationship between circadian preference and personality? Am I a morning person or an evening person?

Circadian preference is also called chronotype. Most research indicates there are two chronotypes: morningness and eveningness.

The word “circadian” is refers to the near 24-hour physiological rhythm that has been observed at every system level in nearly all plants and animals.

It’s controlled by internal factors like the self-sustaining oscillator mechanism as well as external factors like temperature, physical activity, social relationships, light, and food consumption.

If an individual has morningness, they get up easily in the morning, they are more alert in the morning as compared to the evening, and they tend to have a preference for morning activities. Sometimes morning people are referred to as larks.

If somebody has eveningness, they tend to be more alert in the evening, they are able to sleep late into the morning, and they prefer afternoon and evening activities. Sometimes evening people are referred to as owls.

Lipnevich, A. A., Credè, M., Hahn, E., Spinath, F. M., Roberts, R. D., & Preckel, F. (2017). How distinctive are morningness and eveningness from the Big Five factors of personality? A meta-analytic investigation. Journal of Personality and Social Psychology, 112(3), 491–509. (Supplemental)

Randler, C. (2008). Morningness–Eveningness and Satisfaction with Life. Social Indicators Research, 86(2), 297–302.

Zajenkowski, M., Jankowski, K. S., & Stolarski, M. (2019). Why do evening people consider themselves more intelligent than morning individuals? The role of big five, narcissism, and objective cognitive ability. Chronobiology International, 36(12), 1741–1751.

Tonetti, L., Pascalis, V. D., Fabbri, M., Martoni, M., Russo, P. M., & Natale, V. (2016). Circadian typology and the Alternative Five-Factor Model of personality. International Journal of Psychology, 51(5), 332–339.

Taillard J, Philip P, Chastang JF, Bioulac B. Validation of Horne and Ostberg morningness-eveningness questionnaire in a middle-aged population of French workers. J Biol Rhythms. 2004; 19: 76–86. PMID: 14964706

Solomon NL, Zeitzer JM (2019) The impact of chronotype on prosocial behavior. PLoS
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