The Investigator's Workbook: Principles of Practice - How to Conduct Proper Interviews and Interrogations

Written By: John E. Reid and Associates
Oct 13, 2025

Principles of Practice: How to Conduct Proper Investigative Interviews and Interrogations*

Since 1947, John E. Reid and Associates has been conducting investigative interviews and, when appropriate, interrogations.

Since the mid-1970s, we have been teaching investigators from law enforcement, government agencies, and the private sector from around the world proper interview and interrogation procedures. In this document (an expansion of a prior Investigator Tip), we will detail the procedures, guidelines, and best practices that we teach to all investigators, and will include references and supporting documentation.

Our purpose is to reinforce the core principles of practice that we believe are essential for conducting effective interviews and interrogations, which are the principles we teach in all our training programs.

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The Investigators Workbook 1025 (389.772 KB)
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