... achieve their long term study goals English is a compulsory subject from the elementary school up to senior school in today‟s Vietnam education system.It is considered a difficult subject for the ... systematic way Clark, et al., (1997) pointed out that the field of psycholinguistics is concerned with discovering the psychological process that make it possible for humans to acquire and use ... as social class, educational level, age, sex and ethnic origin as well as the study of language choice in bilingual or multilingual communities, language planning or language attitudes; stylistics,...