  In this paper, we present a tool to assess users ability to change tasks. To
do this, we use a variation of the Box and Blocks Test. In this version, a
humanoid robot instructs a user to perform a task involving the movement of
certain colored blocks. The robot changes randomly change the color of blocks
that the user is supposed to move. Canny Edge Detection and Hough
Transformation are used to assess user perform the robot's built-in camera.
This will allow the robot to inform the user and keep a log of their progress.
We present this method for monitoring user progress by describing how the moved
blocks are detected. We also present the results of a pilot study where users
used this system to perform the task. Preliminary results show that users do
not perform differently when the task is changed in this scenario.
