Can emotional state influence the results of the SFST?

The emotional state of an individual can significantly influence their performance during the Standardized Field Sobriety Test (SFST). Factors such as anxiety, stress, or nervousness can affect a person's coordination, concentration, and overall ability to complete the tasks required in the test. When someone is feeling anxious or stressed, their fine and gross motor skills may be compromised, leading to poorer performance on tasks like the walk-and-turn or one-leg stand.

Research indicates that an individual's mental state can impact their cognitive functions, such as judgment and decision-making, which are critical during the SFST. This means that officers administering the test must be aware that psychological factors may skew the results, making it challenging to determine if impairment is due to alcohol or drugs as opposed to a heightened emotional state. Understanding this can help ensure a more accurate assessment during the evaluation process.