The human sentence parsing device assigns phrase structure to sentences in two steps. The first stage parser assigns lexical and phrasal nodes to substrings of words. The second stage parser then adds higher nodes to link these phrasal packages together into a complete phrase marker. This model is compared with others. (Author/RD)

This study presents a view of diachronic change in language which focuses on the conflicting interaction of principles determining language organization. Principles of structural and perceptual nature are in conflict in language of the Subject-Object-Verb (SOV) type, because of the relative clause construction. Theoretical and empirical evidence…