All other things being equal the parser favors attaching an ambiguous modifier to the most recent possible site. A plausible explanation is that locality preferences such as this arise in the service of minimizing memory costs--more distant sentential material is more difficult to reactivate than more recent material. Note that processing any…

Results from an English acceptability-rating experiment are presented that demonstrate that people find doubly nested relative-clause structures just as acceptable when only two verb phrases are included instead of the grammatically required three. Three possible accounts of the results are considered. (Author/VWL)