Operant Conditioning: STICKERS!!

In a few of my classes during grade school we had a sticker sheet system. Every time we received an A on a quiz or test we got a sicker. And once we filled up our sheet with however many stickers we needed, we were rewarded with extra credit. This specific operant conditioning was positive reinforcement because we were rewarded for doing well on our tests. I knew this system was to encourage us to study so that we would do well in the class, but what I didn't know was that it effected how I strived to achieve in other classes. I acknowledged my study habits for that specific class and then applied them to my other classes so that I could do just as well.