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Table 1 Appearance and behavior details for the objects used in the game; these parameters were consistent across experiments

From: The spatial allocation of attention in an interactive environment

Object Maximum horizontal × vertical size (in pixels) Color(s) Speed(s) (in pixels/second)
Roadway 600 × 500 Dark gray (#777777) NA
Sidewalks 150 × 500 Medium gray (#C1C1C1) NA
Seed basket and barn 220 × 200 Cartoon image NA
Pentagon avatar 40 × 40 Purple (#800080) 180
Pedestrian triangles 30 × 30 Blue (#0000FF) 60 or 120
Car discs 44 × 44 (radius = 22) Red (#FF0000) 60, 120, 180, or 240
Seed disc 16 × 16 (radius = 8) #FFD700, #F08080, #FFA07A, #20B2AA, or #87CEFA NA