A DYNAMICAL SYSTEMS STRATEGY:

Ulrich, B.D., Ulrich, D.A., Collier, D.H., & Cole, E.L. (1995). Developmental shifts in the ability of infants with Down syndrome to produce treadmill steps. Physical Therapy, 75, 14-23.

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1. IDENTIFY A COLLECTIVE VARIABLE

2. EXAMINE CHANGE OVER TIME IN THE COLLECTIVE VARIABLE

3. EXAMINE STABILITY / INSTABILITY IN THE COLLECTIVE VARIABLE

4. IDENTIFY CONTROL PARAMETERS

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