On the interpretation of null arguments in L2 Japanese by European <i>non-pro-drop</i> and <i>pro-drop</i> language speakers

We report that (i) European pro-drop language learners of Japanese as a foreign language (L1 Spanish) (pro-drop JFLs) allowed a sloppy interpretation of null arguments beginning at the primary stage of L2 development, and that (ii) European non-pro-drop JFL learners (non-pro-drop JFLs) did not permit a sloppy interpretation with null arguments even at an advanced level. Under Ishino’s (2012) framework, we argue that the results for the pro-drop JFLs follow from positive L1 transfer, given that Spanish, their first language, permits a sloppy interpretation with null subjects in some well-defined contexts (Duguine, 2013, 2014), and also that the non-pro-drop advanced JFLs’ availability of null arguments stems from the addition of a D-feature to the feature bundles of the target language.