What does a high SII score typically indicate about hearing ability?

A high Speech Intelligibility Index (SII) score is an important metric in audiology that reflects a person's ability to understand speech. The SII score quantifies how much of the speech signal is accessible to the listener, taking into account various frequency ranges and how well they contribute to speech comprehension.

When a person has a high SII score, it typically indicates that a significant portion of the speech signal is available to them, suggesting good speech intelligibility. This means they are more likely to accurately perceive and understand spoken words, leading to more effective communication in daily life.

In contrast, the other options do not correctly relate to what a high SII score conveys about hearing ability. For example, a low SII score would indicate poor understanding of speech and possibly unreliable test results, but these are not associated with high scores. High frequency loss could also negatively impact the SII score, which is the opposite of what a high score represents.