- Goal: match the working Trial box (bottom white box)  to the Model box (top grey box) using a minimum number of moves
- 3 levels of difficulty: a) 3-move problem, b) 4-move problem, c) 5-move problem
- The task was given on a touch-sensitive screen and all subjects were required to use their dominant (right) hand.

University of California, Davis

This is a cognitive task consisting of colored spheres in 3 stacks. The goal is to match the given state to the model by rearranging the spheres in the minimum amount of moves. The spheres can only be moved in the order in which they appear in the stacks.

Tower of London task

Beauchamp, M., Dagher, A., Aston, J., & Doyon, J. (2003). Dynamic functional changes associated with cognitive skill learning of an adapted version of the Tower of London task. NeuroImage, 20(3), 1649-1660. doi:10.1016/j.neuroimage.2003.07.003

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