There are as many explanations for the causes of the credit crunch as there are economists, but some themes predominate: excessive leverage; inadequate capital; over-complex financial instruments; an asset bubble; and (pretty universally) the asymmetric incentives that arose from bankers' bonus arrangements. Bankers were paid when the risks they took paid off, but were not penalised when their bets went sour. Since it can take years to be certain that bank risks are profits or losses, it proved too easy for them to take the cash on short-term gains but to have no responsibility for the consequences of their actions years later.
人们对于信贷危机起因的解释，就像manbetx20客户端下载 学家的数量那样，多如过江之鲫，但有些说法成为了主流：过度杠杆操作；资本金不足；过于复杂的金融工具；资产泡沫；以及银行家奖金安排引起的非对称激励——人们在这一点上意见相当一致。如果银行家的冒险获得了成功，他们会收取报酬，但他们押注失败后，却不会受到惩罚。由于确认银行风险是盈利还是亏损可能要花费数年的时间，银行家很容易就会选择根据短期利润拿钱，但对于自己的行为在多年后造成的影响却不承担责任。