From these results, it may be that input on the form of contact with
native speakers and interaction with them is a crucial factor in the usage
of these L2 learners, in relation to “ne” deletion. Those who had never been
to France previously deleted not at all, and contact with natives during the
year in France, increased their deletion rate substantially. On the other
hand, the speaker who had had contact with natives previous to the year
abroad, and who did not have much contact with natives during the academic
year, actually decreased.