Every gamblers literally have that spirit of confidence in them such that even when they are having doubt about the possible outcome of the bet they placed, they still hope for a miracle to happen so that it can clear their doubt but i am not arguing that some gamblers don't have that feeling that a bet they placed may not likely go according to prediction thereby using lesser amount on such bets unlike those bets they are confident of and tends to increase their wager amount since they have already gotten the conviction that from how they made their predictions that it is most likely to play according to how they predicted them. Some people also reduce their wager amount when they make a lot of accumulations because they are unsure if all the events can run through but for someone who is staking on few games or single bets, they can increase their wager amount since they are more confident and sense that the risk of losing is lesser and the possibility for them to win is very much obtainable.