1 Start: Show Square, Aim Finger
2 Begin to Trace Square
3 Turning a 90-degree Corner
4 Tracing the rest of the square
5 Completing the
Figure
6 Perfect Square: Get Treat
Download a videoclip of this trial
For more information see:
Iversen
I. H. & Matsuzawa, T. Presentation at Measuring Behavior 1998