Oller,D.K.&Eilers,R.（2002）.Language and literacy in bilingual children.Clevedon: Multilingual Matters.
Rescorla,R.A.（1966）.Predictability and number of pairings in Pavlovian fear conditioning.Psychonomic Science,4,383-384.
Saffran,J.R.（2001）.The use of predictive dependencies in language learning.Journal of Memory and Language,44,493-515.