Insights into Phraseological Processing through Stimuli Modification: An Exploratory Eye-Tracking Study on Native Speakers and Learners of Italian

Collocations are one of the most studied types of word combinations. Their intricate nature, based on varying degrees of restriction, begs the question as to how modifications in their typical form influence the way they are processed by native speakers and learners. In this study, an eye-tracking experiment was carried out. We compared native speakers and learners of Italian when processing typical (i.e., common) and atypical (i.e., uncommon) collocations of Italian. Atypical collocations were developed by manipulating the grammatical and lexical components of a set of typical collocations. We also investigated how the online processing was affected by the different modifications (i.e., lexical and grammatical) performed and proficiency levels included. Both kinds of modifications disrupt collocation processing, with lexical modification being generally more salient than grammatical modification in terms of processing costs. Further, proficiency level influences phraseological processing, with varying effects related to the different kinds of modifications. The findings of our study are largely in line with previous research, while providing new insights into how lexis and grammar affect phraseological processing. They contribute to the evidence on languages other than English, a still under-researched domain in second language acquisition as a whole.