Further development of the response scales of the Acquired Brain Injury Challenge Assessment (ABI-CA).

Primary Objective: To revise the scaling of the response sets of the Acquired Brain Injury Challenge Assessment (ABI-CA) through expert input and determination of empirically based cut-points.

Research Design: A measurement development study with a content validity focus.

Methods: Response option wording was revised through consultation with six physiotherapists with paediatric ABI expertise.