How do educational psychologists define "boredom"?

How do educational psychologists define "boredom"?

Louis Pugliese (Lecturer in Educational Psychology, CSUN, Certified by the National Board for Professional Teaching Standards) gives expert video advice on: What conditions stimulate learning?; How can I help my child be more motivated in the classroom? and more...

Boredom is basically a term that people use, or learners use, to describe why they didn't stay interested in a particular task or a particular stimuli. But there are two sides of boredom. One is, we didn't want to stay with the task because it was too simple, it wasn't challenging, we had better things on our mind to do. The mind wants to be engaged, it wants to be active. If the task is not challenging, we report boredom. On the other hand, boredom can be from just the opposite. Boredom can be when the task is so challenging there is no chance of our success, and that the process, the novelty in the task, any of the new information is such a cognitive challenge we readily break it off because we don't believe we're going to meet with any success at all. So there are two sides to boredom, one is when a task is too easy, and one is when a task is too difficult.