The Behavioral Analysis Interview (BAI) is the only questioning method that has been developed specifically to help investigators sort those who are likely to be guilty from those who are not. In its typical application the BAI is a preinterrogation interview that is used to focus interrogational effort. However, it can be used independently in order to circumscribe investigative efforts in those cases in which there are a fixed and relatively large number of suspects. The BAI is typically conducted in a private setting with the interviewer sitting directly in front of the suspect. This paper is intended to present an overview of the BAI and the research which supports it so that practitioners and researchers will not be misled by findings that have little, if any, ecological validity. What is identified is a clear need for additional evaluations of the BAI, both field- and laboratory-based with well-designed laboratory studies providing useful information. Additional suggestions are provided to guide future research on the BAI. References