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Warning Signs: Identifying School Shooters Before They Strike — Now available as an audiobook

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Reading Between the Lines: Recognizing Insider References to School Shootings [3 pp, 430 Kb]

School shooters sometimes quote previous shooters in their online posts and homework assignments. This article, originally published in Campus Safety magazine, presents examples of such insider references, which may point to the intention to commit a shooting. For a glossary of insider references, see the companion document “A Guide to Insider References Used by School Shooters and Other Attackers.”

Copyright © 2008–2023 by Peter Langman, Ph.D.

Published by Langman Psychological Associates, LLC.

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Last update: 14 March 2023