Teaching and learning a foreign language have undergone a significant paradigm shift from an environment that is centered on the teacher to one that is centered on the learner and the learning. Historically, language instruction was described in terms of classroom activities. Foreign language research in the 1960s and 1970s shifted its focus from the learner's external environment to the learner's internal environment. Social, cognitive, and environmental factors all played a role in language achievement and proficiency in studies.
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