The MacDonald triad suggests that serial killers will demonstrate several early childhood warning signs, including which of the following?

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The MacDonald triad suggests that three early childhood behaviors are common in serial killers: bed-wetting past age 5, setting fires, and cruelty to animals. While some sources may suggest other behaviors within the triad, such as truancy or running away, they are not typically considered to be part of the original triad identified by J.M. MacDonald in the 1960s. Swearing and lead exposure are not typically included in the MacDonald triad at all.

The MacDonald Triad Suggests That Serial Killers Will Demonstrate Several