What are you looking at? Testing Nancy’s rules for pedestrian interactions

To establish optimal lighting for inter-personal evaluations between pedestrians it is desirable to know what visual cues are used. An experiment was conducted to test two proposals. One, the widely made assumption (in lighting research) that the face is an important cue. Two, the hierarchy of factors proposed by a lighting designer. This was investigated using category rating with a series of images containing actors embedded into an outdoor scene.