According to the Harvard study, for people who have not experienced trauma, trigger warnings seem to decrease the belief in their own and others resilience, and increase the belief in their own and others post-traumatic vulnerability to developing a mental disorder, being unable to effectively regulate emotions, and generally becoming unable to function.
This is of particular concern because beliefs about ones own post-traumatic vulnerability have a meaningful impact on post-traumatic recovery... trigger warnings may have the effect of encouraging trauma to become central to the identity of those who have experienced trauma; and this is associated with increased severity of PTSD symptoms...Employing trigger warnings may also inadvertently communicate to members of the school community that ideas and material that students find upsetting or uncomfortable is harmful to them or to others. For people who are predisposed to thinking that words have the capacity to do harm, trigger warnings serve as a threat-confirmation.
In short - colleges are teaching students to put a chip on their shoulders...
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Don't handicap your children by making their lives easy."
Robert Heinlein
Ya think? Sheesh.