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THE EFFECTS OF BLUE-LIGHT FILTRATION ON SLEEP AND WORK OUTCOMES.

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Guarana, Cristiano L. Barnes, Christopher M. Ong, Wei Jee


CITATION

Guarana, C. L., Barnes, C. M., & Ong, W. J. (2021). The effects of blue-light
filtration on sleep and work outcomes. Journal of Applied Psychology, 106(5),
784–796. https://doi.org/10.1037/apl0000806

--------------------------------------------------------------------------------


ABSTRACT

In this article, we investigate the effects of blue-light filtration on broad
attitudinal and behavioral outcomes (i.e. work engagement, organizational
citizenship behavior, and counterproductive work behavior). Drawing on recent
developments in the circadian process literature and its related research on
chronobiology, we propose that a cost-effective sleep intervention can improve
multiple organizationally relevant outcomes. Specifically, we theorize that
wearing blue-light filtering glasses creates a form of physiologic darkness,
thus improving both sleep quantity and quality. We then argue that wearing
blue-light filtering glasses is related to work engagement, task performance,
and nontask performance via sleep quantity and sleep quality. Considering that
individuals vary in the timing of their circadian process, we propose that
chronotype is a first-stage moderator for our theoretical model. We tested these
theoretical expectations in 2 experimental experience sampling studies. In Study
1a, we collected data from 63 managers (519 daily observations) and found that
wearing blue-light filtering glasses is an effective intervention to improve
physiological (sleep), attitudinal (work engagement), and behavioral (task
performance, organizational citizenship behavior, and counterproductive work
behavior) outcomes. In general, the effects were stronger for employees who tend
to have sleep periods later in the day. In Study 1b, we collected data from 67
call center representatives (529 daily observations) and measured task
performance from clients. We replicated most of the findings except for the
interactions. Our model highlights how and when wearing blue-light filtering
glasses can help employees to live and work better. (PsycInfo Database Record
(c) 2022 APA, all rights reserved)

--------------------------------------------------------------------------------




JOURNAL OF APPLIED PSYCHOLOGY

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