Investigative interviewing is moving away from confession-driven legacy methods and toward information-gathering approaches grounded in research. Science-Based Interviewing prioritizes accurate information, rapport, open-ended questioning, strategic evidence use, and hypothesis testing while reducing the risks created by guilt presumptions, psychological manipulation, pseudoscience, and false confessions.

Body language and lie detection are often linked, but research does not support many popular claims. This article explains why nervous behavior, eye contact, baselining, and microexpressions are weak indicators of deception and why investigators should focus on statement evidence, corroboration, and science-based interviewing instead.