Lighting appraisal, well-being and performance in open-plan offices: A linked mechanisms approach

Abstract

/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1177/1477153507086279Lighting Research and Technology, 40, 2, pp. 133-151, 2008-06-01 Lighting appraisal, well-being, and performance in open-plan offices: a linked mechanisms approach Veitch, J. A.; Newsham, G. R.; Boyce, P. R.; Jones, C. C. The material in this document is covered by the provisions of the Copyright Act, by Canadian laws, policies, regulations and international agreements. Such provisions serve to identify the information source and, in specific instances, to prohibit reproduction of materials without written permission. For more information visit http://laws.justice.gc.ca/en/showtdm/cs/C-42Les renseignements dans ce document sont protégés par la Loi sur le droit d'auteur, par les lois, les politiques et les règlements du Canada et des accords internationaux. Ces dispositions permettent d'identifier la source de l'information et, dans certains cas, d'interdire la copie de documents sans permission écrite. Pour obtenir de plus amples renseignements : http://lois.justice.gc.ca/fr/showtdm/cs/C-42 Please cite as: Veitch, J. A., Newsham, G. R., Boyce, P. R., & Jones, C. C. (2008). Lighting appraisal, well-being, and performance in open-plan offices: A linked mechanisms approach. Lighting Research and Technology, 40(2) AbstractIn two experiments in a simulated office space, temporary office personnel worked under one of six lighting conditions for a day. A previous paper reported the results of statistical tests for lighting conditions effects on perceptions, feelings, and task performance. This paper reports mediated regression analyses testing the linked mechanisms by which lighting conditions affect health, well-being, and task performance. Combined results from the two statistical approaches show that people who perceived their office lighting as being of higher quality rated the space as more attractive, reported more pleasant mood, and showed greater well-being at the end of the day. Direct-indirect lighting and personal control were favoured. Lighting conditions that improved visibility also improved task performance.

Systematic review on the interaction between office light conditions and occupational health: Elucidating gaps and methodological issues

“…An X indicates that the health outcome was investigated, it does not give any indication on the strength or significance of the correlation between that health indicator and the office light conditions References Borisuit et al 33 Münch et al 34 Viola et al 35 Linhart et al 36 Mills et al 37 Figueiro et al 38 Das 39 Kozaki et al 40 Vetter et al 41 Maleetipwan-Mattsson et al 42 Geerdinck et al 43 Viitanen et al 44 Veitch et al 15 Villa et al 45 Hedge et al 46 Jafari et al 47 Hirning et al 48 Hirnign et al 49 Xia et al…”

“…In this article, the p-values of correlations were not reported, only 95% confidence intervals were provided to compare different situations. In another study, Veitch et al 15 investigated visual comfort based on different lighting systems in their repeated measures design. Direct-indirect luminaires were found comfortable for 80% of participants, while direct-only luminaires were found comfortable for only 70%.…”

“…Although researchers have indicated a link between environmental satisfaction and job satisfaction 14,15 , the ideal physical work environment for employees' satisfaction and health remains unclear. Based on occupant satisfaction measures, Newsham et al 16 provided recommendations for environmental aspects within the office environment to reduce the risk of dissatisfaction.…”

“…Objective measures are irrespective of people's feelings and beliefs, while subjective measures are usually self-reported and based on individual experiences. Veitch et al 15 included visual capability (number of correct responses per second) and motivation (based on willingness to complete a computer task) as objective measures. Vetter et al 41 included activity levels measured with a wrist-worn actimetry device as outcome measures in their controlled intervention.…”

Users’ experiences of lighting controls: A case-study

“…7 In offices, best practice guidance and careful design can afford both control to individuals and an indirect lighting system to balance the non-visual lighting needs of occupant's wellbeing and still achieve energy savings of up to 70%. 8 Previous qualitative survey-based research has investigated office workers use of lighting controls and results indicated that, unsurprisingly, people had a preference for daylight but also, and more worryingly, 72% of this study's respondents did not know how to find the lighting remote control keys underneath a sliding cover. 9 This study makes use of a qualitative research approach to examine aspects of user experience and beliefs not easily captured by more traditional quantitative methods.…”