動物固僻（重復而沒有功能）行為的起因：
How do stereotypies develop? One theory is that animals are motivated to perform a naturally occurring behaviour and if that behaviour is prevented or thwarted, it results in a chronic state of arousal. Once a critical level is reached, the animal performs an abnormal behaviour, such as a stable vice, in an attempt to decrease that arousal. Another theory is that most sequences of behaviour include two distinct phases: an appetitive phase, where the animal is motivated to perform a behaviour and a consummatory phase where the animal completes the behaviour to reduce the initial drive (ie. courtship is an appetitive behaviour terminated by mating). If the animal is unable to reach the second phase, it returns to the original sequence and begins again. Eventually the initial behavioural act becomes a fixed pattern which is refined until it barely resembles a normal behaviour.作者: 畜牧刀客 時間: 2010-9-28 20:34
!3:受益了，謝謝樓主的資料。。。。作者: howitzki 時間: 2010-10-22 22:19
樓主總結(jié)的真好，收藏了~~作者: csf159357 時間: 2011-2-21 11:31
很好 收藏了作者: zhengda 時間: 2011-2-26 10:26
好貼 給頂一下作者: 飼料精英 時間: 2011-2-28 21:52
有蟲啊
