The current study is a partial replication of
Kim and Goodall (2024),
who tested competing predictions of two prominent accounts of
that-trace effects, which are argued to emerge due
to either syntactic constraints or considerations of the production system. To tease apart these possibilities, Kim and Goodall
examine L2 sensitivity to
that-trace effects, as the two accounts implicitly have different expectations
regarding L2 performance. Their results showed a non-native pattern of acceptability judgments for Korean and Spanish learners of
English, whose L1s do not display
that-trace effects, which are argued to support a production-based account. The
current study extends their experiment to Nadji Arabic L2 learners of English, whose L1 critically exhibits
that-trace effects, allowing us to probe whether previous findings can be accounted for by processing
difficulties or L1 background. Our results indicated that despite L2 learners’ native-like sensitivity at the group level, lower
proficiency was associated with non-native-like subject extraction effects, in line with Kim and Goodall’s results. Overall,
findings from an acceptability judgment task suggest that L2 sensitivity to
that-trace effects does not involve
transfer of a syntactic constraint, but is something that develops with proficiency, more in line with a production-based
account.