What are the two types of clues evaluated in the One-Leg Stand test?

In the One-Leg Stand test, the main focus is on assessing balance and the individual's ability to follow instructions. Balance is critical because the test involves standing on one leg, which challenges the subject's stability and coordination under a condition where impairment may be evident. The ability to follow instructions is equally important; the test requires the subject to listen to and understand the commands being given, as well as execute them precisely. Observing these two types of clues allows officers to evaluate whether the person is demonstrating the coordination and cognitive function expected of a sober individual, making the assessment of balance and ability to follow instructions essential for determining sobriety.