Research on L1 Transfer in Second Language Acquisition from the Perspective of Markedness Theory

Language transfer has always been an essential part in SLA research. As one of the most important constraints, markedness theory has gained much more attention these days. Researchers have made various studies on markdness from different perspectives, among which Chomsky's theory of Universal Grammar(UG) and Eckman's Markedness Differential Hypothesis(MDH) are the most influential ones. This thesis aims to make a review of previous studies in order to improve readers' understanding of L1 transfer from the perspective of markdness theory.