ons. We generally want our measurement error to be as low as possible, which we can achieve either by improving the quality of the measurement (for example, using a better time to measure reaction time), or by averaging over a larger number of indvidiual measurements.</p>
<p>Sometimes there is a standard against which other measurements can be tested, which we might refer to as a “gold standard” – for example, measurement of sleep can be done using many different devices (such as devices that measure 