The English language is made up of a variety of speaker groups, all of whom can generally understand each other but may present speech with slightly different qualities. In this study, we test the hypothesis that listeners from different linguistic backgrounds process morphosyntactic information differently depending on the dialect of the speaker (guise). Bidialectal speakers of Mainstream American English (MAE) and African American Language (AAL) and monodialectal speakers of MAE listened to sentences containing subject-verb agreement in both MAE and AAL. Verbal -s morphology is different in MAE (obligatory third person singular -s) and AAL (zero-marking of third person singular). Therefore, differences in subject-verb agreement can have different interpretations depending on listener background. Sentences contained stimuli with zero-marked verbal -s in both the AAL guise and in the MAE guise, such as “The duck(s) swim in the pond”. This means that the subject can be interpreted as either singular or plural in AAL, but only plural in MAE. Using the Visual World Paradigm, we recorded listeners’ eye movements to corresponding images associated with the linguistic input, as well as the images that they selected. We predict that there will be a difference between listener groups in how they use subject-verb agreement to guide interpretation based on the speaker’s guise: monodialectal MAE-speaking listeners will follow a consistent selection pattern that aligns with MAE grammatical rules, and bidialectal listeners will have split selection patterns depending on a difference in grammatical rules for AAL. Data collection is ongoing, but I will report image selection for verbal -s across both AAL and MAE guises and discuss the implications of preliminary results.