Revisiting the Performance and Mood Effects of Information About Lighting and Fluorescent Lamp Type

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/10.1006/jevp.1997.0059 Psychology, 17, 3, pp. 253-262, 1997-09-01 Revisiting the performance and mood effects of information about lighting and fluorescent lamp type Veitch, J. A. Journal of Environmental REVISITING THE PERFORMANCE AND MOOD EFFECTS OF INFORMATION ABOUT LIGHTING AND FLUORESCENT LAMP TYPE 1Jennifer A. Veitch 2 National Research Council of Canada, Institute for Research in ConstructionAbstract Popular articles and manufacturers' literature assert that full-spectrum fluorescent lighting improves cognitive performance, vision, and mood. Previous experimental investigations have failed to demonstrate these effects. This paper reports an attempt to replicate work by Veitch, Gifford, and Hine (1991) concerning the effects of information sets about lighting on performance and mood. In this 2 (lamp type) x 4 (information sets) x 2 (gender) factorial experiment, 104 male and 104 female participants were led to expect good, poor, or indifferent outcomes of working under full-spectrum or cool-white fluorescent lighting, or they were not given any information. There were no effects of lamp type or information set on performance or mood. The results are discussed in relation to other evidence that cognitive processes mediate lighting-behaviour relationships.

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“…Similarly, Luckiesh and Moss [46] determined that lighting and its quality related positively to student test scores. Veitch [64] , however, argued that regardless of the quality and quantity of lighting it had no effect on the mood or performance of students. In a different but related study, Knez and Kers [44] explored the effect of lighting and gender to find that females were more perceptive to light than males.…”

“…Correlational research Alassaf [3] A survey design was judged to be the most appropriate for the present study for a number of reasons. According to Reference [64,34] survey studies allows researchers to obtain information about the case, facts, activities, phenomena, moral, personal experiences, behaviour and answers to events. Questionnaires also offer the advantage of allowing sufficient time for the respondents to reflect on their answers.…”

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“…Two cognitive processes, demand characteristics and reactance, were offered as possible explanations for the reactions to the two information sets; alternatively, providing information about lighting might increase arousal sufficiently to affect task performance. However, Veitch (1997) conducted a replication study that found neither information sets nor lamp type effects on performance or mood, despite a larger sample size, double-blind experimental control, and a more vivid information set using a video presentation. If the anecdotal reports about beneficial changes following FSFL installation illustrate the action of expectancies created by advertising or promotional material, the process by which this occurs is difficult to create in a laboratory setting.…”

“…Other research groups have not found lamp type effects on mood in laboratory and field experiments that compared a variety of fluorescent lamp types (Bartholomew 1975;Berry 1983;Boray et al 1989;Kuller and Wetterberg 1993;Veitch et al 1991;Veitch 1997). FSFL did not produce improved mood in any of these experiments, which include both within-subjects and double-blind between-subjects designs and a range of exposure times (e.g., field studies with 14 working days' exposure to each type [Berry 1983]; laboratory studies from 2 hours [Veitch 1997] to one working day in length [Kuller and Wetterburg 1993]).…”

“…FSFL did not produce improved mood in any of these experiments, which include both within-subjects and double-blind between-subjects designs and a range of exposure times (e.g., field studies with 14 working days' exposure to each type [Berry 1983]; laboratory studies from 2 hours [Veitch 1997] to one working day in length [Kuller and Wetterburg 1993]). Moreover, wider differences in spectral power distribution (CWFL, metal halide, and HPS lamps, compared within-subjects) did not affect feeling ratings such as "bad-good", "tense-relaxed", "sleepy-alert", "tired-rested", "comfortable-uncomfortable", and "discouraged-satisfied" (Smith and Rea 1979).…”