Performers use a range of different skills when taking part in physical activities. (a) Describe the difference between a simple skill and a complex skill. ...

(a) A simple skill is one that has few decisions to make and is straightforward to perform. It requires relatively little concentration because the movement pattern is uncomplicated. An example is a forward roll in gymnastics, where the performer follows a single, well-practised movement. [1 + 1]

A complex skill involves many decisions, consists of several linked parts, and demands a high level of concentration. The performer must process more information and coordinate multiple actions. An example is a tennis serve, which requires a ball toss, backswing, contact, and follow-through all timed precisely. [1 + 1]

(b) Placing skills on a continuum is more useful than fixed categories because very few skills are purely simple or purely complex in every situation. [1] A continuum acknowledges that most skills fall somewhere between the two extremes, giving a more accurate and nuanced picture of the skill's demands. [1] This helps coaches plan appropriate practice: a skill closer to the complex end might need more part-practice and slower build-up, while one nearer the simple end can be practised as a whole. [1]

(c) The badminton serve sits towards the closed end of the open-closed continuum because the shuttlecock is stationary on the racket and the environment is relatively stable; the performer controls when and how they execute the action. [1] Returning a smash, by contrast, sits towards the open end because the performer must react to the speed, direction, and timing of the opponent's shot, making the environment unpredictable. [1] This illustrates that even within the same sport, different skills can occupy different positions on the continuum. [1]