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About PSI Investigations
PSI investigations are professionally-run, scientifically grounded research field studies. All investigators are vetted, fully trained and assessed.
Most of the venues investigated are detailed on these pages.
Please select a year from the menu, left, to view investigations conducted in those years and for more information about reports.
Occasionally, formal investigation locations cannot be made public for various reasons and are noted as 'Undisclosed locations', or 'fieldwork' in the case of observation investigations which cannot be disclosed.
You can also find out how to request an investigation in this section.
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