Sentence formulation is easier when thematic and syntactic prominence align: evidence from psych verbs

We use the visual world eye-tracking paradigm to investigate how the mapping from thematic event structures to grammatical structures, known as sentence formulation, unfolds during real time sentence production. Experiment 1 contrasted production of SubjExp (“LeslieEXP loves AnnSTIM”) versus ObjExp (“LeslieSTIM scares AnnEXP”) sentences. Experiment 2 investigated passivized SubjExp (“LeslieSTIM was loved by AnnEXP”) and passivized ObjExp sentences (“LeslieEXP was scared by AnnSTIM.”). In both studies, we found that speakers were faster to begin speaking and to preferentially fixate the subject when they were able to assign the thematically prominent Experiencer role to the subject of the sentence. We conclude that sentence formulation is easier when speakers can make use of a tight, systematic correspondence between event structures and linguistic structures. We discuss the implications of our work for the relationship between language and thought and for the formal accounts of SubjExp and ObjExp verbs.