Within a legal setting this article are several passages and links on interrogation - notably HIG's work:
There is also a 46-page HIG booklet that offers an accessible view into the various controlled investigations completed, underway, and on the horizon. In general, the results (unsurprisingly) indicate that rapport-building approaches draw out more credible information than control-based (or coercive) methods.
Link to article:https://www.justsecurity.org/29273/a...-genuine-step/

Link to HIG booklet:http://online.fliphtml5.com/xaga/cwpt/#p=45