Perceived outdoor lighting quality POLQ. A lighting assessment tool

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Perceived outdoor lighting quality POLQ. A lighting assessment tool. / Johansson, Maria; Pedersen, Eja; Mattsson, Pimkamol; Kuhn, Linda; Laike, Thorbjörn.

I: Journal of Environmental Psychology, Vol. 39, 2014, s. 14-21.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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T1 - Perceived outdoor lighting quality POLQ. A lighting assessment tool

AU - Johansson, Maria

AU - Pedersen, Eja

AU - Mattsson, Pimkamol

AU - Kuhn, Linda

AU - Laike, Thorbjörn

PY - 2014

Y1 - 2014

N2 - Abstract in UndeterminedA shift towards more energy-efficient light sources for outdoor lighting such as light-emitting diodes (LEDs) is underway. Photometric measures are not sufficient to capture how users experience the light, so complementary tools are required. This study aimed to develop an observer-based environmental assessment tool, based on bipolar semantic differentials, for outdoor lighting in urban spaces. Exploratory (N = 130) and confirmatory (N = 117) factor analyses of observations of lighting installations made by laypersons on-site along pedestrian paths, resulted in two dimensions of high reliability: the Perceived Strength Quality (PSQ, Cronbach's alpha = 0.82–0.85) and the Perceived Comfort Quality (PCQ, Cronbach's alpha = 0.77–0.81). PSQ and PCQ differentiated between light sources of different illuminance level, colour temperature and colour rendering. Regression analyses showed that the perceived lighting qualities helped to explain the variance in visual accessibility, whereas PCQ helped to explain perceived danger in the environment. The perceived lighting qualities can add to the understanding of pedestrians' perception of outdoor lighting, and is proposed as a complementary tool for development of sustainable light designs in the urban environment

AB - Abstract in UndeterminedA shift towards more energy-efficient light sources for outdoor lighting such as light-emitting diodes (LEDs) is underway. Photometric measures are not sufficient to capture how users experience the light, so complementary tools are required. This study aimed to develop an observer-based environmental assessment tool, based on bipolar semantic differentials, for outdoor lighting in urban spaces. Exploratory (N = 130) and confirmatory (N = 117) factor analyses of observations of lighting installations made by laypersons on-site along pedestrian paths, resulted in two dimensions of high reliability: the Perceived Strength Quality (PSQ, Cronbach's alpha = 0.82–0.85) and the Perceived Comfort Quality (PCQ, Cronbach's alpha = 0.77–0.81). PSQ and PCQ differentiated between light sources of different illuminance level, colour temperature and colour rendering. Regression analyses showed that the perceived lighting qualities helped to explain the variance in visual accessibility, whereas PCQ helped to explain perceived danger in the environment. The perceived lighting qualities can add to the understanding of pedestrians' perception of outdoor lighting, and is proposed as a complementary tool for development of sustainable light designs in the urban environment

KW - assessment

KW - Perception

KW - street lighting

KW - urban space

U2 - 10.1016/j.jenvp.2013.12.002

DO - 10.1016/j.jenvp.2013.12.002

M3 - Article

VL - 39

SP - 14

EP - 21

JO - Journal of Environmental Psychology

JF - Journal of Environmental Psychology

SN - 1522-9610

ER -