Measurement and assessment
Measurement is evidence, and it enables us to compare, contrast, assess and re-evaluate all aspects of movement. Before taking measurements we have to consider the classification of the skill, the main purpose of the skill and the component parts of the movement to be performed. Generally, measurement can be divided into two areas: outcome measures and performance measures. This chapter outlines outcome and performance measures used in motor control before considering issues of validity and reliability. It provides an overview of the performance measures most commonly used. Measurement allows us to plan, evaluate, provide feedback, diagnose, monitor, predict and assess motor development. When taking measurements in motor control, we have to ask whether an indicator accurately measures the variable that it is intended to measure. The chapter reviews a range of topics and research in which an understanding of measurement provides a key foundation.