Controversial Issues of Automaticity in Second Language Acquisition

Automaticity in second language acquisition covers a variety of topics,which results in different explanations and conclusions in terms of different perspectives.Most studies focusing on automaticity differ at three controversial issues.The first one is the properties of automaticity;second is the definition of automaticity and nonautomaticity,that is,the clear-cut dichotomy or two ends of a continuum;third is the process of automaticization.On one hand,these controversial issues result in some difficulties in related studies;on the other hand,they promote the development of automaticity to a great degree.