Psychological noise

 I am very easily distracted by sounds in a silent room. If there is a pen being tapped or even a clock ticking, my focus will zoom in on the distracting noise, and I won't be able to focus mentally on much else. To help with that, I often have music playing in my room. For example, today during the Chapter 1 Test, I had music playing to help me focus on getting other work done and to also help students focus on the task in front of them.