Final answer:
Sharon's constant worry about whether she turned off her stove, which interferes with her daily activities, is an example of the memory error called 'persistence'.
Step-by-step explanation:
Every day Sharon worries about whether she turned off the stove and can barely think of anything else. This is an example of a phenomenon called persistence, which is one of Schacter's seven memory errors. Persistence involves repeatedly remembering certain information to the point where it interferes with the ability to concentrate on other things. Usually, persistence is associated with involuntary recall of unwanted memories, especially if they are unpleasant or distressing.
Sharon's constant preoccupation with the state of her stove despite her efforts to focus on other tasks illustrates how a concern can monopolize one's attention. It's worth noting that if Sharon experiences significant stress or impairment because of these concerns, her experience may also overlap with symptoms of Obsessive-Compulsive Disorder (OCD), which would warrant further evaluation from a mental health professional.
In addition to persistence, there are other types of memory errors, such as absentmindedness and blocking. Absentmindedness is when lapses in memory occur due to breaks in attention, whereas blocking is not being able to access stored information, despite feeling that it's on the tip of your tongue. Understanding these different memory errors can help individuals recognize when they might need strategies to improve their memory or focus, or when it might be a sign of a deeper psychological concern.