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Grossmont College Griffin Gate

Wednesday October 10, 2018, 7-9pm. We're currently scheduling our fall 2018 events for the month of October. If you would like PPI to come to your San Diego Branch Public Library, college campus, or other learning institution, contact This email address is being protected from spambots. You need JavaScript enabled to view it..

honoring the heroes of

skeptical inquiry

Eyewitness Testimony: Many subscribe to the old adage, "Seeing is believing," but eyewitness testimony is among some of the more unreliable findings admitted into any investigation. Paranormal investigations are no exception. Although clients provide personal accounts of activity as part of the Prelim process, investigators cannot use these as findings. Rather, they must depend on a combination of their own personal accounts and the documented findings they capture on the investigation. Even the eyewitness testimony of investigators remains the most subjective and least reliable form of findings in the report. It is significant only if there are correlations between subjective experience and documented findings, or patterns among independent reports of experiences.

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Ouija Boards: A History

I remember I was about six when my 16-year- old sister had several of her girlfriends at our home for a slumber party. I was not interested in girls yet so the night was extremely uneventful for me. At least most of the night was uneventful. The only interesting part of that night came late in the evening when I heard loud screaming coming from inside her bedroom. Then her bedroom door flew open with such force that it sucked the air out of the hallway where I was....

PPI Podcast #8: Investigative Techniques (2011)

Part 1 of our presentation: Science & Beyond - A Look at the Science Behind 21st Century Paranomrmal Investigation - is entitled Investigative Techniques.

presented by PPI Investigator Jason Sieckman. Introduction by PPI Investigator Tim Mountain.

Recorded October 11, 2011

Length: 00:17:32