Studies of English have shown that reduced referential expressions (e.g. pr
onouns) contribute more to discourse coherence than do unreduced expression
s (e.g. proper names). To test the generality of these findings, a series o
f reading-time studies was conducted to examine the processing of co-refere
nce in Chinese discourse. The results obtained for Chinese were similar to
those obtained previously for English. Furthermore, comparisons of the comp
rehension of overt pronouns and zero pronouns (a phologically-null form not
present in English) showed that the two types of reduced referring express
ions contribute equally to discourse coherence for the kinds of passages st
udied in the experiments, A formal model of the structure and processing of
reference in discourse, developed to handle co-reference phenomena in Engl
ish, is shown to provide an account of these experimental results on the re
ading of Chinese.