The researchers calculated that between 10.5 and 22.8 percent of participants engaged in deception about their eligibility to participate. The purpose of this document is to assist researchers in addressing issues related to using deception in research with human subjects.The use of deception and incomplete disclosure are valuable research techniques used to answer scientific inquiries in human subjects research. Chapter 1 introduces the scientific method and its objectives. Spectrum of deception types, including: disinformation, concealment, camouflage, demonstrations, and feints. Deception in warfare dates back to early history. Federal regulations prohibit the use of deceptive techniques that place participants at greater than minimal risk. Theft or fraud, call the Philadelphia Police Department at 911 to file a report with your local police district. Mossad created a bomb in a pocket and tricked Hezbollah fighters into unwittingly wearing these devices on their bodies.