Quote from VTI0990:
Come on, someone has to understand.
I guess he meant you need to do homework. But different people have different interpretations.
OK, from the beginning, I mentioned I was going to focus on two behaviors: cut loss short and let profits run. I have explained that occasional to frequent rewards maintain the opposite behavior, which is to watch your loss widen. Human beings are living organisms and follow the same principles of positive reinforcement and negative reinforcement. Traders are no exceptions. If our bad behavior is rewarded, we will continue. Now you know why people rob a bank, because they get away with loads of money, immediately=they are rewarded. Will they do it again? You bet.
I use the word "immediately" because there is a delayed unpleasant outcome of a certain probability, and that is being caught by cops and sent to jail. In the mind of a bank robber, the delayed unpleasant outcome of jail time has less weight than the instant gratification of getting thousands of dollars. That leads to a trader's bad behavior: take profits too early.
Between instant gratification and delayed gratification of bigger magnitude, traders usually choose the former. In everyday language, we say "1 bird in hand is better than 3 birds in the bush." Many studies have been done on this topic and the results are the same: people choose something that is guaranteed, rather than something that they are not sure of, even though the latter is bigger/better.
If you see your trade goes in your direction, the temptation of taking profits is huge, especially a little pullback shows up. You certainly don't want to lose the bird in your hand, do you?