In Second Language Acquisition(short for SLA) research,the study of individual learner factors plays an important role.In this paper,discussion will be restricted to five general individual learner factors which have received the most attention in SLA research:age,cognitive style,personality,motivation and attitude.The research will,to some extent,not only develop the SLA theory,but also enhance learners' judgments to their own individual learner factors.It can also shed light on the practical foreign language learning.
