Abstract

The article analyzes an interactional form of tunnel vision or cognitive bias in a series of mundane police–suspect interactions. The data come from a murder case in which the suspect, later convicted and then released from prison with the help of the Wisconsin Innocence Project, frequently calls police detectives to inquire about his confiscated van. As he is operating in a context in which accusations are rarely made explicit, we highlight the suspect’s use of a complaint-denial device to tacitly claim innocence. The police respond by focusing on the complaint rather than the denial part of the device. The use of the complaint-denial device is compared to more formal inquiries in which accusations are overt. We discuss the implications of a sociological understanding of cognitive bias – how it may operate in practices of talk and social interaction during informal encounters – for other criminal justice settings.