When a person is focusing, either by thinking; planning a move or performing a task they tend to filter out their surroundings. They may hear or see what lays besides, but due to the fact that their mind’s is elsewhere their surroundings is not registered. It is still somewhere in their memories, located to the part of their brain’s where you might consider it to be their “junk files”.Example: I myself (Philippe Paul) tend to get lost in watching my favorite show Tom and jerry. On the second of September my best-friend had came over to visit, to tell me about how his date went the previous night. I was on my couch watching television when he walked in and greeted me. Then he began to tell me about his date. I switched the Channel unintentionally and landed on Tom and jerry. From that point in time everything my friend was telling me was irrelevant to me and my focus turned swiftly to the t.v as I’m shaking my head in agreement to everything he was saying. To this day I recall nothing of what he was telling me. So because I filtered my friend story out my behavior can be consider as a negative reinforcement.