Being Watched Changes Performance

Being observed does not have a single effect on performance. It reliably helps some tasks and reliably hinders others, and the dividing line is how well practised the task is.

Observation raises arousal, which is not uniformly good

The presence of others increases physiological arousal. Higher arousal strengthens the most available response, whatever that response happens to be.

For a well practised task the most available response is the correct one, so performance improves. For an unfamiliar task it may not be, so errors increase.

This accounts for the apparent contradiction between people who thrive under scrutiny and people who fall apart. Both are experiencing the same mechanism applied to different levels of practice.

Attention is diverted towards monitoring

Being watched draws some attention towards how you are being perceived. That attention is unavailable for the task, which matters most where the task requires most attention.

Automatic skills need little, so the diversion goes unnoticed. Skills still requiring deliberate control need a great deal, and the shortfall shows immediately.

The self-monitoring can also interfere directly, since attending to a movement that has become automatic often disrupts it.

Who is watching matters more than how many

Observation by someone whose judgement carries consequences produces stronger effects than observation by a larger indifferent group.

This is why a rehearsal in front of friends feels different from the same material in front of an assessor. The audience size may be smaller and the effect larger.

It also suggests a useful sequence: practise in front of low-stakes observers before high-stakes ones, so that being watched is itself the practised condition.

Preparation raises the level at which the effect flips

Since the outcome depends on how well established the response is, additional practice moves a task from the impaired category to the assisted one.

Practising to the point where the material runs without deliberate control is therefore the specific remedy, rather than attempting to feel less nervous.

The nervousness may remain unchanged. What changes is whether it strengthens the right response or a competing one.

Interpretation of the arousal is adjustable

The physical signs of pressure and the physical signs of anticipation are largely the same. Which one a person concludes they are experiencing affects how they then perform.

Reading a racing pulse as readiness rather than as a warning is not self-deception, since the underlying state genuinely supports either reading.

Persistent anxiety that prevents ordinary activity is a different matter and warrants professional support rather than reframing.