Working memory span tasks may measure interference-proneness in addition to capacity for both older and younger adults, suggest that resistance to interference may also affect performance on many cognitive tasks.

A diagnosis of coronary heart disease is usually reached in a step-by-step procedure that begins with an electrocardiogram and frequently includes a stress test in which the patient exercises on a treadmill or a stationary bicycle while hooked up to an electrocardiograph, which measures the heart's electrical activity at close to maximum capacity.

Overcrowding in schools, measured by the ratio of enrollment to capacity.