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- Aries, Myriam, et al.
(författare)
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Assessment protocol and effects of two dynamic light patterns on human well-being and performance in a simulated and operational office environment
- 2020
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Ingår i: Journal of Environmental Psychology. - : Elsevier. - 0272-4944 .- 1522-9610. ; 69
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Tidskriftsartikel (refereegranskat)abstract
- Sophisticated electric lighting solutions like tuneable white-light LED-systems, varying in light amount and/or colour temperature, can help to supplement or mimic daylight. Today's office environments are increasingly being equipped with dynamic lighting solutions even though it is yet unknown what a dynamic pattern looks like to optimally support human performance and well-being. In a pilot study, a dual-experimental methodology was employed to examine the effects of a dynamic lighting pattern. Two opposite dynamic electric light patterns were applied both in a controlled laboratory study as well as in a quasi-controlled field study. A momentary questionnaire concerning different aspects of well-being was repeated multiple times during the duration of the experiment, complemented by two performance tasks. The current results were inconclusive and inconsistent between the two study types, carefully pointing at the need to test dynamic light patterns in the field before implementing it in a real office environment.
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- Aries, Myriam, et al.
(författare)
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Field study challenges : Customisation and personalisation during lighting control research in residences
- 2023
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Ingår i: Journal of Physics: Conference Series, Volume 2600, Daylighting & electric lighting. - : Institute of Physics (IOP).
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Konferensbidrag (refereegranskat)abstract
- Residential lighting control can assist in creating a comfortable atmosphere, providing information, and supporting well-being. Field studies are used to investigate lighting control, but study protocol customisation or personalisation may be required due to actual life events and situations. An 8-week field study tested three protocols for effects on behaviour, well-being, and sleep patterns and was executed in 14 apartments during the winter. Light amount and timing were controlled: residents woke up with a dawn simulation, experienced lights turn-off as an indication to leave for work, and were prepared for bed during a dusk simulation scenario. Sleep trackers results showed later and more wide-ranged wake-up and bedtimes than assumed. As expected, the apartments’ different floorplans challenged comparable light exposure. Unexpectedly, several participants requested a reduced wake-up frequency and reported sleeping elsewhere on Fridays and Saturdays. Everybody experienced a full dawn simulation, but some people left home soon after wake-up, calling for lighting control customisation. Real-time field applications may demand a certain level of customisation or personalisation, affecting intentions and results. Discussing and documenting (un)intentional adjustments during final interviews and in scientific publications can benefit in explaining findings and further research.
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- Aries, Myriam, et al.
(författare)
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Students in good mood appear slower and less accurate: A pilot study investigating dynamic lighting impact on students’ perception and performance
- 2019
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Ingår i: Proceedings of the 29th Session of the CIE. - Vienna : The International Commission on Illumination. - 9783902842749 ; , s. 1297-1304
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Konferensbidrag (refereegranskat)abstract
- Dynamic daylight can provide stimulation throughout the day. Since not all building spaces have access to enough daylight, electric lighting solutions can help substituting. The study investigated the effect of two opposite, daily dynamic light patterns to influence students’ mood and performance. In a mimicked open office space, 20 second-year students participated in a pilot study where they were exposed to light patterns changing in illuminance level over a day and filled out momentary assessments five times. Hierarchical Linear Models were employed to analyse the effect of light level as well as the timing of the exposure. Positive effects are shown for mood, but only for the pattern with a high morning light level. An afternoon boost may come too late to exert benefits. There are indications for performance-enhancing effects by use of dynamic light conditions, even though students seem to be slower and less accurate when in good mood.
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- Aries, Myriam, et al.
(författare)
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The relationship of light exposure to sleep outcomes among office workers. Part 1 : Working in the office versus at home before and during the COVID-pandemic
- 2024
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Ingår i: Lighting Research and Technology. - : Sage Publications. - 1477-1535 .- 1477-0938. ; 56:2, s. 113-125
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Tidskriftsartikel (refereegranskat)abstract
- The relationship between everyday light exposure and sleep was studied for office workers. The study was conducted during the upswing of the COVID-19 pandemic, enabling a comparison between Office and Home Workdays. Fifteen full-time office employees were monitored for a period of 4–6 weeks. They wore a light-tracking device on their clothes and had a sleep tracker at home. Compared to an Office Workday, light exposure was lower in the afternoon and total sleep time was almost 5 minutes longer on a Home Workday. Sleep efficiency was the same on both workday types. A higher median illuminance level in the afternoon was significantly related to later sleep onset on an Office Workday. Higher median illuminance levels in the morning were related to earlier awakening. Counter to expectations, higher light levels in the evening were also related to earlier awakening. Everyday light exposure matters for sleep quality but may affect circadian functioning differently than the often more extreme light interventions employed in laboratory experiments. Moreover, differences in outcomes between Office and Home Workdays signal the need for further investigation to provide supportive light levels during workhours.
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- Fischl, Geza
(författare)
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A psychosocial approach to architectural design : a methodological study
- 2004
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- In this thesis, psychosocially supportive environmental components are identified and environmental assessment techniques are investigated to evaluate psychosocial components in built environments, particularly in health care environments. The aim is to develop a method useful for designers in collecting quantitative as well as qualitative information about the psychosocial supportiveness of the built environments. In the first paper, an evaluation of the multi-methodological tool (Empowering Environment Evaluation (Triple-E)) was conducted in a hospital ward and a health care center. The aim of the paper was to appropriately select, and test the multi-methodological tool in two cases, where redesign of the existing facilities took place. The results show that, with the Triple-E tool, psychosocially supportive components of the environment could be measured by the combination of structured brainstorming, semantic environmental description, and aesthetical preferences. User group differences were found and further considered for the design process. The analysis-synthesis model of design facilitated the designers understanding of how psychosocial approach could be integrated in the design cycle. In the second paper, the Environment Evaluation tool consisting of a modified semantic environmental description questionnaire and an evaluation of architectural details. The aim of the study was to identify whether there are any differences in perception of psychosocially supportive architectural and interior elements among patients and architects. The results show that there are differences between patients and architects in terms of factors contributing to psychosocial supportiveness. Results also show that the significant architectural details may influence individual psychological skills, which in turn may affect individual social skills and self-management. The ranking of the influential architectural details on perceived supportiveness for the architect and the patient groups is in the following order: 1) window; 2) floor and wall; 3) ceiling and furniture; 4) handicraft, photograph, chair and curtain; 5) noise level, safety, and space for moving. By relating environmental details to environmental semantic descriptive factors further details of psychological and physical factors could be realized. Suggested improvements of the Triple-E tool are the inclusion of measurements of restorative environmental components which may further contribute to stress alleviation and of more structured guidelines for the design purposes.
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