As Annalisa is sitting in her bedroom listening to the radio, she notices that it suddenly sounds louder. She looks and is not surprised to find her little sister turning up the volume. How could Annalisa tell that the radio became louder before she saw what her sister was doing?

Question

Quizplus · Accepted Answer

The change in volume had to exceed her difference threshold for her to notice it.

As Annalisa Is Sitting in Her Bedroom Listening to the Radio