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