Listening requires little mental involvement through which a person registers he or she's hearing anything at all.

Incidental listening requires little mental involvement through which a person registers he or she's hearing anything at all.

Incidental listening requires little mental involvement through which a person registers he or she's hearing anything at all.

Explanation:

Incidental listening is more related to "hearing" than "listening". Hearing refers to the ability to sense sounds around with the ear, while "Listening" refers to paying attention consciously to sound.

Rather than "passive listening", which does involve some level of mental involvement and awareness of what is being listened to, like listening to music while doing something else, "Incidental Listening" occurs when we simply "overhear" sounds in our surroundings, which sometimes can register and we can learn something from what we've heard, but other times it doesn't register and we don't pay attention to it.

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