Kim, Jae-gue. 1998. A Minimalist Theoretic Analysis of Word Order Parameter. Studies in Modern Grammar 14, 151-173. The purpose of this study is to examine the correlation of head movement and word order under the postulation that the order of the sentential constituents is closely related to the head parameter and head movement. In this paper, it is shown that Chomsky`s(1993, 1995) Economy Principle not only covers the effects of the ECP, Ouhalla`s(1990b) Neg Parameter, Pollock`s(1989) theta-opacity, Pesetsky`s(1989) Earliness Principle, but also effectively account for the properties of head movement and word order in English, French, German, and Korean. Following Chomsky (1993), the motivation of head movement is regarded as morphological feature-checking and differences of word order are analyzed in terms of the properties of functional categories. In the framework of Minimalist Theory, the morphological features of functional categories in English, French, German, and Korean, including many other languages are classified into strong vs. weak, and the surface word order of them is explained on the base of the properties of these features.