This paper presents results from a self-paced reading experiment in Japanes
e investigating attachment preferences for relative clauses to three ensuin
g potential nominal heads. Similar to previous results from the processing
of English, Spanish and German, we observed the following non-monotonic pre
ference ordering among the three attachment sites: most local, least local,
intermediate. We discuss the result in light of two types of parsing model
s: models that only consider attaching a modifier to candidate sites whose
lexical heads have already been encountered, and models in which predicted
categories are also considered as possible modification sites. We contend t
hat the preference to attach to the least local site over the intermediate
site argues against the first type of model, and supports the second type o
f model with a factor such as predicate proximity or anaphor resolution dri
ving the preference to attach the RC to the least local candidate site.