Circadian Typology and Personality Dimensions of Croatian Students of Health-Related University Majors
Abstract
1. Introduction
2. Participants and Methods
2.1. Participants
2.2. Questionnaires
2.3. Statistical Analyses
3. Results
3.1. Reliability of IPIP 50 Big Five and rMEQ
3.2. IPIP 50 Big-Five and rMEQ Related Differences between Different Majors
3.3. Relationship of IPIP 50 Big-Five and rMEQ
4. Discussion
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Conflicts of Interest
References
- Adan, A.; Archer, S.N.; Hidalgo, M.P.; Di Milia, L.; Natale, V.; Randler, C. Circadian typology: A comprehensive review. Chronobiol. Int. 2012, 29, 1153–1175. [Google Scholar] [CrossRef]
- Randler, C.; Gomà-i-Freixanet, M.; Muro, A.; Knauber, C.; Adan, A. Do different circadian typology measures modulate their relationship with personality? A test using the Alternative Five Factor Model. Chronobiol. Int. 2015, 32, 281–288. [Google Scholar] [CrossRef]
- Germain, A.; Kupfer, D.J. Circadian rhythm disturbances in depression. Hum. Psychopharmacol. Clin. Exp. 2008, 23, 571–585. [Google Scholar] [CrossRef]
- Horne, J.A.; Ostberg, O. A self-assessment questionnaire to determine morningness-eveningness in human circadian rhythms. Int. J. Chronobiol. 1976, 4, 97–110. [Google Scholar] [PubMed]
- Liaghatdar, M.J.; Ashoorion, V.; Avizhgan, M. Compare the educational achievement of medical students with different circadian rhythms in difficult courses of basic sciences. Adv. Biomed. Res. 2016, 5, 58. [Google Scholar] [CrossRef] [PubMed]
- Raoof, A.M.; Asaad, Y.A.; Al-Hadithi, T.S. Distribution of Chronotypes among a Sample of Iraqi Kurdish Medical Students. Sultan Qaboos Univ. Med. J. 2014, 14, e356–e360. [Google Scholar] [PubMed]
- Andrijevic, I.; Simic, S.; Stanojevic, C.; Golubovic, B.; Milutinovic, D. Sleep quality in relation to sleep hygiene knowledge and practice, chronotype and lifestyle behaviour among healthcare students. Med. Pregl. Rev. 2018, 71, 17–24. [Google Scholar] [CrossRef][Green Version]
- Milić, J.; Kvolik, A.; Ivković, M.; Babić, A.; Labak, I.; Benšić, M.; Ilakovac, V.; Ništ, M.; Zibar, L.; Heffer, M. Are There Differences in Students’ School Success, Biorhythm, and Daytime Sleepiness Depending on Their School Starting Times? Coll. Antropol. 2014, 38, 889–894. [Google Scholar]
- Muro, A.; Gomà-i-Freixanet, M.; Adan, A.; Cladellas, R. Circadian typology, age, and the alternative five-factor personality model in an adult women sample. Chronobiol. Int. 2011, 28, 690–696. [Google Scholar] [CrossRef]
- Goldberg, L.R. The development of markers for the Big-Five factor structure. Psychol. Assess. 1992, 4, 26–42. [Google Scholar] [CrossRef]
- Čuljak, Z.; Mlačić, B. The Big-Five Model of Personality and the Success of High School Students in Physical Education. Croat. J. Educ. 2014, 16, 471–490. [Google Scholar]
- Adan, A.; Lachica, J.; Caci, H.; Natale, V. Circadian typology and temperament and character personality dimensions. Chronobiol. Int. 2010, 27, 181–193. [Google Scholar] [CrossRef]
- Lee, S.J.; Park, S.H.; Cloninger, C.R.; Chae, H. Behavior problems and personality in Korean high school students. PeerJ 2018, 6, e6106. [Google Scholar] [CrossRef]
- Kotrla Topic, M.; Perkovic Kovacevic, M.; Mlacic, B. Relations of the Big-Five personality dimensions to autodestructive behavior in clinical and non-clinical adolescent populations. Croat. Med. J. 2012, 53, 450–460. [Google Scholar] [CrossRef] [PubMed]
- Hampson, S.E. Personality processes: Mechanisms by which personality traits “get outside the skin”. Annu. Rev. Psychol. 2012, 63, 315–339. [Google Scholar] [CrossRef] [PubMed]
- Milić, J.; Škrlec, I.; Vranješ, I.M.; Podgornjak, M.; Heffer, M. High levels of depression and anxiety among Croatian medical and nursing students and the correlation between subjective happiness and personality traits. Int. Rev. Psychiatry 2019, 31, 1–8. [Google Scholar] [CrossRef]
- Gramstad, T.O.; Gjestad, R.; Haver, B. Personality traits predict job stress, depression and anxiety among junior physicians. BMC Med. Educ. 2013, 13, 150. [Google Scholar] [CrossRef]
- Prat, G.; Adan, A. Relationships among circadian typology, psychological symptoms, and sensation seeking. Chronobiol. Int. 2013, 30, 942–949. [Google Scholar] [CrossRef]
- Randler, C. Morningness–eveningness, sleep–wake variables and big five personality factors. Pers. Individ. Differ. 2008, 45, 191–196. [Google Scholar] [CrossRef]
- Russo, P.M.; Leone, L.; Penolazzi, B.; Natale, V. Circadian preference and the big five: The role of impulsivity and sensation seeking. Chronobiol. Int. 2012, 29, 1121–1126. [Google Scholar] [CrossRef] [PubMed]
- Selvi, F.F.; Karakaş, S.A.; Boysan, M.; Selvi, Y. Effects of shift work on attention deficit, hyperactivity, and impulsivity, and their relationship with chronotype. Biol. Rhythm. Res. 2015, 46, 53–61. [Google Scholar] [CrossRef]
- Tsaousis, I. Circadian preferences and personality traits: A meta-analysis. Eur. J. Pers. 2010, 24, 356–373. [Google Scholar] [CrossRef]
- Lipnevich, A.A.; Credè, M.; Hahn, E.; Spinath, F.M.; Roberts, R.D.; Preckel, F. How distinctive are morningness and eveningness from the big five factors of personality? A meta-analytic investigation. J. Pers. Soc. Psychol. 2017, 112, 491–509. [Google Scholar] [CrossRef] [PubMed]
- Randler, C.; Schredl, M.; Göritz, A.S. Chronotype, Sleep Behavior, and the Big Five Personality Factors. SAGE Open 2017, 7, 1–9. [Google Scholar] [CrossRef]
- Jackson, L.; Gerard, D. Diurnal types, the “Big Five” personality factors, and other personal characteristics. J. Soc. Behav. Pers. 1996, 11, 273–283. [Google Scholar]
- DeYoung, C.G. Higher-order factors of the Big Five in a multi-informant sample. J. Pers. Soc. Psychol. 2006, 91, 1138–1151. [Google Scholar] [CrossRef]
- DeYoung, C.G.; Hasher, L.; Djikic, M.; Criger, B.; Peterson, J.B. Morning people are stable people: Circadian rhythm and the higher-order factors of the Big Five. Pers. Individ. Differ. 2007, 43, 267–276. [Google Scholar] [CrossRef]
- Randler, C. Evening Types among German University Students Score Higher on Sense of Humor after Controlling for Big Five Personality Factors. Psychol. Rep. 2008, 103, 361–370. [Google Scholar] [CrossRef]
- Bleidorn, W.; Hill, P.L.; Back, M.D.; Denissen, J.J.A.; Hennecke, M.; Hopwood, C.J.; Jokela, M.; Kandler, C.; Lucas, R.E.; Luhmann, M.; et al. The policy relevance of personality traits. Am. Psychol. 2019, 74, 1056–1067. [Google Scholar] [CrossRef]
- Adan, A.; Almirall, H. Horne & Östberg morningness-eveningness questionnaire: A reduced scale. Pers. Individ. Differ. 1991, 12, 241–253. [Google Scholar] [CrossRef]
- Milić, J.; Škrlec, I.; Vranješ, I.M.; Matić, M.; Sertić, D.; Heffer, M. The Croatian Translation of the Horne and Östberg Morningness-Eveningness Questionnaire With a Brief Review of Circadian Typology. Southeast Eur. Med. J. 2018, 2, 1–11. [Google Scholar] [CrossRef]
- Goldberg, L.R. A broad-bandwidth, public domain, personality inventory measuring the lower-level facets of several five-factor models. In Personality Psychology in Europe, 1st ed.; Mervielde, I., Deary, I., De Fruyt, F., Ostendorf, F., Eds.; Tilburg University Press: Tilburg, The Netherlands, 1999; Volume 7, pp. 7–28. [Google Scholar]
- Mlačić, B.; Goldberg, L.R. An Analysis of a Cross-Cultural Personality Inventory: The IPIP Big-Five Factor Markers in Croatia. J. Pers. Assess. 2007, 88, 168–177. [Google Scholar] [CrossRef]
- Goldberg, L.R.; Johnson, J.A.; Eber, H.W.; Hogan, R.; Ashton, M.C.; Cloninger, C.R.; Gough, H.G. The international personality item pool and the future of public-domain personality measures. J. Res. Pers. 2006, 40, 84–96. [Google Scholar] [CrossRef]
- Tomczak, M.; Tomczak, E. The need to report effect size estimates revisited. An overview of some recommended measures of effect size. Trends Sport Sci. 2014, 21, 19–25. [Google Scholar]
- Fritz, C.O.; Morris, P.E.; Richler, J.J. Effect size estimates: Current use, calculations, and interpretation. J. Exp. Psychol. Gen. 2012, 141, 2–18. [Google Scholar] [CrossRef]
- Randler, C. German version of the reduced Morningness–Eveningness Questionnaire (rMEQ). Biol. Rhythm. Res. 2013, 44, 730–736. [Google Scholar] [CrossRef]
- Treven Pišljar, N.; Štukovnik, V.; Kocjan, G.Z.; Dolenc-Groselj, L. Validity and reliability of the Slovene version of the Morningness-Eveningness Questionnaire. Chronobiol. Int. 2019, 36, 1409–1417. [Google Scholar] [CrossRef]
- Adan, A.; Natale, V.; Caci, H.; Prat, G. Relationship between circadian typology and functional and dysfunctional impulsivity. Chronobiol. Int. 2010, 27, 606–619. [Google Scholar] [CrossRef]
- Yoon, I.Y.; Kripke, D.F.; Elliott, J.A.; Youngstedt, S.D.; Rex, K.M.; Hauger, R.L. Age-related changes of circadian rhythms and sleep-wake cycles. J. Am. Geriatr. Soc. 2003, 51, 1085–1091. [Google Scholar] [CrossRef]
- Yoo, G.S.; Kim, T.W. The Effect of Morningness-Eveningness on Shift Work Nurses: Sleep Quality, Depressive Symptoms and Occupational Stress. Sleep Med. Res. 2017, 8, 39–43. [Google Scholar] [CrossRef]
- Kotov, R.; Gamez, W.; Schmidt, F.; Watson, D. Linking “big” personality traits to anxiety, depressive, and substance use disorders: A meta-analysis. Psychol. Bull. 2010, 136, 768–821. [Google Scholar] [CrossRef] [PubMed]
- Mlačić, B.; Šakić, I. The Development of Croatian Markers for the Big-Five Personality Model. J. Gen. Soc. Issues 2008, 17, 223–246. [Google Scholar]
- Milić, J.; Šijan, I.; Božić, I.; Zibar, L.; Ilakovac, V.; Heffer, M. Habits of medical students and the effect on daytime sleepiness. In Proceedings of the Zagreb International Medical Summit, Zagreb, Croatia, 21–24 November 2013; Liječnički vjesnik: Zagreb, Croatia, 2013; p. 34. [Google Scholar]
- Mokros, L.; Koprowicz, J.; Nowakowska-Domagała, K.; Rodak, J.; Pietras, T. Eveningness and its possibility of predicting burnout symptoms among physicians and nurses—Preliminary results. Curr. Probl. Psychiatry 2018, 19, 23–29. [Google Scholar] [CrossRef]
- Hasler, B.P.; Allen, J.J.B.; Sbarra, D.A.; Bootzin, R.R.; Bernert, R.A. Morningness-eveningness and depression: Preliminary evidence for the role of the behavioral activation system and positive affect. Psychiatry Res. 2010, 176, 166–173. [Google Scholar] [CrossRef] [PubMed]
- Vollmer, C.; Randler, C. Circadian preferences and personality values: Morning types prefer social values, evening types prefer individual values. Pers. Individ. Differ. 2012, 52, 738–743. [Google Scholar] [CrossRef]
- Piffer, D.; Ponzi, D.; Sapienza, P.; Zingales, L.; Maestripieri, D. Morningness–eveningness and intelligence among high-achieving US students: Night owls have higher GMAT scores than early morning types in a top-ranked MBA program. Intelligence 2014, 47, 107–112. [Google Scholar] [CrossRef]
- Costa, P.T.; Terracciano, A.; McCrae, R.R. Gender differences in personality traits across cultures: Robust and surprising findings. J. Pers. Soc. Psychol. 2001, 81, 322–331. [Google Scholar] [CrossRef] [PubMed]
- Lynn, R.; Martin, T. Gender Differences in Extraversion, Neuroticism, and Psychoticism in 37 Nations. J. Soc. Psychol. 1997, 137, 369–373. [Google Scholar] [CrossRef]
- Adan, A.; Natale, V. Gender differences in morningness-eveningness preference. Chronobiol. Int. 2002, 19, 709–720. [Google Scholar] [CrossRef]
- Randler, C. Gender differences in morningness–eveningness assessed by self-report questionnaires: A meta-analysis. Pers. Individ. Differ. 2007, 43, 1667–1675. [Google Scholar] [CrossRef]
- Walker, W.H.; Walton, J.C.; DeVries, A.C.; Nelson, R.J. Circadian rhythm disruption and mental health. Transl. Psychiatry 2020, 10, 1–13. [Google Scholar] [CrossRef] [PubMed]
Item | Mean ± SD | Corrected Item-Total Correlations | Alpha If Item Deleted | Factor Loadings |
---|---|---|---|---|
1. Considering only your own “feeling best” rhythm, at what time would you get up if you were entirely free to plan your day? | ||||
2.87 ± 0.87 | 0.502 | 0.557 | 0.743 | |
2. During the first half-hour after having woken in the morning, how tired do you feel? | ||||
2.29 ± 0.76 | 0.357 | 0.611 | 0.607 | |
3. At what time in the evening do you feel tired and as a result in need of sleep? | ||||
2.76 ± 1.46 | 0.244 | 0.673 | 0.388 | |
4. At what time of the day do you think that you reach your “feeling best” peak? | ||||
2.70 ± 0.79 | 0.536 | 0.554 | 0.755 | |
5. One hears about “morning” and “evening” types of people. Which one of these do you consider yourself to be? | ||||
2.69 ± 1.83 | 0.577 | 0.490 | 0.816 |
Variable | Item 2 | Item 3 | Item 4 | Item 5 |
---|---|---|---|---|
Item 1 | 0.360 | 0.164 | 0.397 | 0.477 |
Item 2 | 0.073 | 0.295 | 0.338 | |
Item 3 | 0.182 | 0.251 | ||
Item 4 | 0.543 |
Variable | MD | RN | MLD | All Students | ANOVA * | ||
---|---|---|---|---|---|---|---|
n = 407 | n = 155 | n = 150 | |||||
Mean ± SD | Mean ± SD | Mean ± SD | Mean ± SD | F | p-Value | η2 | |
Age | 21.63 ± 2.1 | 26.79 ± 8.94 | 22.53 ± 7.17 | 22.93 ± 5.88 | 49.23 | <0.001 | 0.12 |
rMEQ | 13.23 ± 4.1 | 14.47 ± 3.13 | 12.35 ± 3.89 | 13.32 ± 3.89 | 11.84 | <0.001 | 0.03 |
Extraversion | 33.14 ± 6.69 | 33.62 ± 5.56 | 32.15 ± 6.52 | 33.04 ± 6.44 | 2.12 | 0.121 | 0.01 |
Agreeableness | 37.66 ± 6.35 | 38.68 ± 5.12 | 36.93 ± 5.72 | 37.73 ± 5.99 | 3.32 | 0.037 | 0.01 |
Conscientiousness | 35.49 ± 6.75 | 37.53 ± 5.49 | 35.24 ± 5.88 | 35.89 ± 6.37 | 6.78 | 0.001 | 0.02 |
Emotional Stability | 32.16 ± 7.49 | 32.45 ± 6.06 | 29.81 ± 6.83 | 31.73 ± 7.13 | 7.09 | 0.001 | 0.02 |
Intellect | 36.84 ± 5.46 | 35.27 ± 5.49 | 35.39 ± 5.28 | 36.19 ± 5.47 | 6.77 | 0.001 | 0.02 |
Variable | Morning Type | Neither Type | Evening Type | |||
---|---|---|---|---|---|---|
n (%) | Mean ± SD | n (%) | Mean ± SD | n (%) | Mean ± SD | |
MD (n = 406) | 48 (11.8) | 20.1 ± 3.4 | 223 (54.9) | 14.5 ± 1.1 | 135 (33.3) | 8.9 ± 1.8 |
RN (n = 155) | 26 (16.8) | 19.6 ± 1.7 | 104 (67.1) | 14.4 ± 1.1 | 25 (16.1) | 10.2 ± 0.9 |
MLD (n = 149) | 12 (8.1) | 19.4 ± 0.8 | 79 (53) | 14.3 ± 1.2 | 58 (38.9) | 8.4 ± 2.0 |
Variable | rMEQ | Extraversion | Agreeableness | Conscientiousness | Emotional Stability | Intellect |
---|---|---|---|---|---|---|
Age | 0.178 * | −0.032 | −0.040 | 0.022 | −0.006 | −0.179 * |
rMEQ | −0.033 | 0.012 | 0.232 * | 0.133 * | −0.031 | |
Extraversion | 0.265 * | 0.160 * | 0.237 * | 0.289 * | ||
Agreeableness | 0.317 * | 0.012 | 0.308 * | |||
Conscientiousness | 0.280 * | 0.224 * | ||||
Emotional Stability | 0.067 |
IPIP 50 | rMEQ | ANOVA * | ||||
---|---|---|---|---|---|---|
Morning Type | Neither Type | Evening Type | F | p-Value | η2 | |
n = 86 | n = 406 | n = 218 | ||||
Extraversion | 32.7 ± 7.3 | 32.9 ± 5.9 | 33.4 ± 6.9 | 0.44 | 0.643 | <0.01 |
Agreeableness | 37.7 ± 5.7 | 37.9 ± 5.5 | 37.4 ± 6.9 | 0.67 | 0.499 | <0.01 |
Conscientiousness | 37.4 ± 6.5 | 36.8 ± 5.8 | 33.5 ± 6.7 | 24.39 | <0.001 | 0.06 |
Emotional Stability | 33.4 ± 6.9 | 32.2 ± 6.9 | 30.2 ± 7.5 | 8.31 | <0.001 | 0.02 |
Intellect | 36.0 ± 6.1 | 35.9 ± 5.2 | 36.7 ± 5.7 | 1.42 | 0.241 | <0.01 |
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Milić, J.; Milić Vranješ, I.; Krajina, I.; Heffer, M.; Škrlec, I. Circadian Typology and Personality Dimensions of Croatian Students of Health-Related University Majors. Int. J. Environ. Res. Public Health 2020, 17, 4794. https://doi.org/10.3390/ijerph17134794
Milić J, Milić Vranješ I, Krajina I, Heffer M, Škrlec I. Circadian Typology and Personality Dimensions of Croatian Students of Health-Related University Majors. International Journal of Environmental Research and Public Health. 2020; 17(13):4794. https://doi.org/10.3390/ijerph17134794
Chicago/Turabian StyleMilić, Jakov, Iva Milić Vranješ, Ivana Krajina, Marija Heffer, and Ivana Škrlec. 2020. "Circadian Typology and Personality Dimensions of Croatian Students of Health-Related University Majors" International Journal of Environmental Research and Public Health 17, no. 13: 4794. https://doi.org/10.3390/ijerph17134794
APA StyleMilić, J., Milić Vranješ, I., Krajina, I., Heffer, M., & Škrlec, I. (2020). Circadian Typology and Personality Dimensions of Croatian Students of Health-Related University Majors. International Journal of Environmental Research and Public Health, 17(13), 4794. https://doi.org/10.3390/ijerph17134794