What type of impairment does the One-Leg Stand test primarily assess?

The One-Leg Stand test primarily assesses mental and physical coordination. During this test, an individual is instructed to stand on one leg while counting or holding a specific position. This task requires the participant to manage their balance and maintain stability by utilizing both cognitive processes (to follow instructions and count) and physical abilities (to control their body while balancing on one leg).

Mental and physical coordination is essential to successfully complete this task; if a person struggles with balance or coordination, it may suggest impairment possibly due to alcohol or drugs. The other types of impairment, while relevant in different contexts, do not encapsulate the primary purpose of this specific test as effectively as mental and physical coordination does. Balance under pressure is a contributing factor, but the test is fundamentally about assessing overall coordination in both mental and physical facets.