Although over 150,000 law enforcement personnel have been trained to use the Behavior Analysis Interview (BAI), the interview technique has been subjected to very little scrutiny in the laboratory setting. Building on theories of deception from communication and psychology literature, I propose to mine key lexical features from the verbal content of responses to the Behavior Analysis Interview. I expect to find that the responses from deceptive interviewees will differ from truthful responses across multiple lexical dimensions. In addition, I expect responses in high-stakes environments to differ from responses in low- or medium-stakes contexts.