Symmetries and Asymmetries in Movement

Abstract

Symmetric and asymmetric phenomena are prevalent in linguistics. Recently, two famous approaches have been put forward to analyze the symmetry and asymmetry in grammar: Kaynes Linear Correspondence Axiom (LCA)[1]and Ackema and Neelemans human parser[2].
Both of them prove that there is only leftward movement in humans spoken languages. Kaynes theory proves it from a linguistically syntactic perspective while Ackema and Neeleman testify the leftward movement through a mechanic approach. Though these two analyses are
quite popular with linguists, exceptions still exist in many languages. In this paper, I will apply two linguists analysis on CPs movement to
show that rightward-movement explanation for moved CPs is better than leftward movement. Then, the traditional point of view that human
grammar is asymmetric because of the unique leftward movement will be proved to be wrong. From the demonstration of Cps rightward
movement, we will see our grammar is symmetric because both leftward movement and rightward movement exist.