Familiarity of Brazilian psychologists with basic concepts in sleep science and chronobiology
Open accessAbstract
Desynchronization of circadian rhythms and sleep-wake patterns impacts biochemical, physiological, and behavioral functions, including mental processes. The complex relationship between circadian rhythms and mental health makes it challenging to determine causality between circadian desynchronization and mental disorders. Regarding the fact that psychologists act as the front line for initial mental health care, we aimed to assess the knowledge and use of sleep science and basic chronobiology by professional psychologists in Brazil. Data were collected via an online questionnaire completed by 1384 professional psychologists between October 2018 and May 2019. Our findings revealed that ±80% of psychologists reported that at least half of their patients presented some sleep-related complaints; however, only ±27% routinely inquired about sleep quality even in the absence of patient complaints. Additionally, only ±66% initiated treatments to understand these complaints, potentially influenced by the lack of prior academic exposure to biological rhythms as reported by ±76% of Brazilian psychologists interviewed. Importantly, ±15% did not believe in an association between mental health and biological rhythms, and even a significant ±67% were unfamiliar with the term chronobiology and ±63% were not able to describe any other biological rhythm except for the sleep-wake cycle. These results demonstrate that fundamental concepts in chronobiology and sleep science are unknown to a substantial proportion of Brazilian psychologists. In conclusion, we propose that this subject could be more effectively integrated into psychologists' academic training, potentially promoting benefits through the incorporation of a chronobiological approach in mental health practice.
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76% of surveyed psychologists in Brazil had no academic exposure to biological rhythms.
“76% of surveyed psychologists in Brazil had no academic exposure to biological rhythms”
From Essential Information About Chronobiology and Chronotherapy for the Optimal Care of People With Bipolar Disorders: An Expert Consensus (2026) · cites this paper as [40]
67% of surveyed psychologists in Brazil were unfamiliar with the term 'chronobiology'.
“67% were unfamiliar with the term ‘chronobiology’”
From Essential Information About Chronobiology and Chronotherapy for the Optimal Care of People With Bipolar Disorders: An Expert Consensus (2026) · cites this paper as [40]
63% of surveyed psychologists in Brazil could not describe a biological rhythm beyond the sleep-wake cycle.
“63% could not describe a biological rhythm beyond the sleep–wake cycle [40]”
From Essential Information About Chronobiology and Chronotherapy for the Optimal Care of People With Bipolar Disorders: An Expert Consensus (2026) · cites this paper as [40]
There is a paucity of information about chronobiology in clinical training programs and professional guidelines for the treatment of BD.
“we believe there is a paucity of information about chronobiology in clinical training programs and professional guidelines for the treatment of BD.”
From Essential Information About Chronobiology and Chronotherapy for the Optimal Care of People With Bipolar Disorders: An Expert Consensus (2026) · cites this paper as [40]
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“Extrapolating from the sleep medicine literature [34, 40, 56, 57] and our anecdotal experience, we believe there is a paucity of information about chronobiology in clinical training programs and professional guidelines for the treatment of BD.”
Soalheiro, L. M., Benfica, M. A., Brandão, B. D. J., Paiva, R. V. N., Carvalho, L. D., Paranhos, R. D. M., Ferreira, L. T. D. J., Moreno, A. M., Barbosa, P. C. R., & Tamura, E. K. (2024) · Journal of Health Psychology · doi:10.1177/13591053241298780 · Cited by 1 · see citing works
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Sleep medicine and chronobiology education among Brazilian medical students
Novais, Y. C., Borges, J. S. S., Ferreira-Moraes, F. A., & Tamura, E. K. (2024) · Brazilian Journal of Medical and Biological Research · doi:10.1590/1414-431x2024e14147
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- Authors
- Marilac Soalheiro, L., de Jesus Brandão, B., Paiva, R. V. N., Dias Carvalho, L., Menezes Paranhos, R. D., Ribeiro Barbosa, P. C., Guerrero-Vargas, N. N., & Tamura, E. K.
- Affiliations
- Department of Health Sciences, Universidade Estadual de Santa Cruz, Ilhéus, Brazil
- Universidade Estadual de Santa Cruz (BR)
- Department of Human Sciences and Philosophy, Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
- Department of Anatomy, Faculty of Medicine, Universidad Nacional Autonóma de México, México City, México
- Corresponding author
- Tamura, Eduardo Koji
- Venue
- Chronobiology International
- Publisher
- Informa UK Limited
- Published
- 2023-08-03
- Volume
- 40
- Issue
- 8
- Pages
- 1072-1083
- ISSN
- 0742-0528 (ISSN-L)
- 1525-6073
- OpenAlex
- W4386407933
- Cited by
- 5
- References
- 70
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 2
- FWCI
- 0.75
- Type
- journal article
- Language
- en
- Open access
- green
- figshare.com
- Licence
- cc-by
- Locations
- Chronobiology International (publishedVersion)
- PubMed (publishedVersion)
- Figshare (submittedVersion, cc-by)
- Figshare (cc-by)
- Funders
- no funding
- Topics
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
- Keywords
- chronobiology, sleep science, circadian rhythm, sleep-wake cycle, mental health, sleep quality assessment, psychology education, Brazilian psychologists
- MeSH terms
- Brazil, Circadian Rhythm, Humans, Mental Health, Sleep, Recognition, Psychology
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