1. The Teachability Hypothesis and Concept-based Instruction: topicalization in Chinese as a Second Language Open Access Author: Zhang, Xian Title: The Teachability Hypothesis and Concept-based Instruction: topicalization in Chinese as a Second Language Graduate Program: Applied Linguistics Keywords: Processability TheoryTeachability TheorySociocultural TheoryConcept-based teaching File: Download Xian_Zhang.pdf Committee Members: James Lantolf, Dissertation Advisor/Co-AdvisorXiaofei Lu, Committee Chair/Co-ChairNing Yu, Committee MemberPing Li, Committee Member