Appraising the intention of other people: Ecological validity and procedures for investigating effects of lighting for pedestrians

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One of the aims of outdoor lighting in public spaces, such as pathways and subsidiary roads, is to help pedestrians to evaluate the intentions of other people. This paper discusses how a pedestrians' appraisal of another persons' intentions in artificially lit outdoor environments can be studied. We review the visual cues that might be used, and the experimental design with which effects of changes in lighting could be investigated to best resemble the pedestrian experience in artificially lit urban environments. Proposals are made to establish appropriate operationalisation of the identified visual cues, choice of methods and measurements representing critical situations. It is concluded that the intentions of other people should be evaluated using facial emotion recognition; eye-tracking data suggest a tendency to make these observations at an interpersonal distance of 15 m and for a duration of 500 ms. Photographs are considered suitable for evaluating the effect of changes in light level and spectral power distribution. To support investigation of changes in spatial distribution, further investigation is needed with three-dimensional targets. Further data are also required to examine the influence of glare.


Enheter & grupper
Externa organisationer
  • University of Sheffield

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Arkitekturteknik
Sidor (från-till)111-130
Antal sidor20
TidskriftLighting Research and Technology
Utgåva nummer1
StatusPublished - 2019 jan 1
Peer review utfördJa