

Detecting lies is crucial in criminal investigations to help determine the truth, eliminate false leads, and ensure the correct individuals are held accountable. It helps investigators distinguish between innocent suspects and guilty parties, and it can also help protect the innocent from wrongful accusations by providing information that contradicts false claims. Welcome to Lie Detection Techniques (Polygraphy). This book is designed to serve as a resource material for those seeking a comprehensive understanding of truth and lie based on psychological and bodily responses through the aid of polygraph machine and the excellent way of formulating test questions to be utilized in its administration as well as the adherence to the legal requisites throughout the test. This book was inspired by a necessity to produce initial materials for criminology as mandated by CHED Memorandum Order No. 05, Series of 2018 creating the policies and standards for the criminology program. It is hoped that this material would best serve the needs of the instructors and more importantly, the increasing number of criminology students. It is a hope that this book will provide a valuable insight and serve as an indispensable resource in your academic and professional journey.
ISBN: 978-621-418-457-6
Author/s: Jose Rene A. Cepe
Copyright: 2026
Edition: First Edition
Number of Pages: 161
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