Each tries to prove that their theory is true. Design a study that will prove the theory. Memory -based construct that controls coordinated movement. The person must add parameters. Other features are invariant.
Proof includes novel skill performance.
Increase in RT more complex. EMG patterns are similar whether a person makes or not able to make a prepared movement. Minimum amount of time needed to stop intended movement. Changes over time do not follow linear progression. Attractors are preferred behavioral states.