Language comprehension integrates linguistic and non-linguistic information. One such non- linguistic cue, the phenomenon of linguistic register, indexes properties of the speaker’s social identity and social situation and is a concept that is naturally incorporated in speech production and speech perception by proficient speakers of a language. Studies in register research have discovered that the linguistic features do not co-occur by chance, but because of shared underlying communicative functions which correspond to shared situational features like purpose, mode and interactiveness. To the extent that in real – time processing comprehenders are expected to be sensitive to register if there are disruptions in these features. Though there is enough evidence to agree that register knowledge influences every level of linguistic processing, the mental representations of register has not been studied. This study explores the processing and interaction of linguistic register variants (register knowledge) in comparison with verb inflection (grammatical knowledge) in native German speakers in a self- paced reading task followed by acceptability ratings in an online experiment. Our results show no main effects in critical region, but a significant effect of verb mismatch in spillover regions, signifying the need for a more sophisticated experimental method such as ERP or eye-tracking for an advance psycholinguistic study such as this one.