Which of the following is NOT a standard field sobriety test (FST) used by law enforcement?

The finger-counting test is not recognized as a standard field sobriety test (FST) used by law enforcement. Instead, the three commonly accepted FSTs are the horizontal gaze nystagmus test, the walk-and-turn test, and the one-leg stand test.

The horizontal gaze nystagmus test assesses how well a person can follow a moving object with their eyes, revealing potential impairment if there is a lack of smooth pursuit or if the eyes exhibit distinct nystagmus (an involuntary jerking motion). The walk-and-turn test evaluates a person's ability to follow instructions and maintain balance while performing a simple task, which can be indicative of intoxication. The one-leg stand test measures balance and coordination, requiring the individual to stand on one leg for a specified period.

Each of these tests has been validated through research and is widely accepted in courts as reliable indicators of impairment. In contrast, the finger-counting test lacks the scientific backing and standardized procedures associated with the other three tests, making it non-standard in the context of assessing sobriety.