[35-37] The Zeigarnik Effect was first observed by Russian psychologist Bluma Zeigarnik in the early 20th century. While observing waiters in a restaurant, Zeigarnik noticed that the waiters had better recall of orders that were still in progress, as opposed to those that had already been completed.
So, why do unfinished tasks stay on our minds? The answer lies in our brain’s need for closure.
Our brains crave closure, and when a task is left unfinished, it creates a state of tension in our mind...