Known as the Macdonald Triad, this theory was first proposed in the 1960s by psychiatrist J.M. Macdonald in his article The ...
The controversial Macdonald Triad points to three specific behaviour traits in children that are identified in serial killers ...
Conspiracy theories have been cooked up throughout history, but they are increasingly visible lately. So what draws people to them? New research suggests that people with certain personality traits ...
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