Patterns of Episodic Aggressive Behavior
From The Encyclopedia of Serial Killers, page 18
1. Ritualistic behavior
2. Masks of sanity concealing mental instability
3. Compulsivity
4. Periodic search for help
5. Severe memory disorders and an inability to tell the truth
6. Suicidal tendencies
7. History of committing assault
8. Hypersexuality and abnormal sexual behavior
9. Head injuries; injuries suffered at birth
10. History of chronic drug or alcohol abuse
11. Parents with a history of chronic drug or alcohol abuse
12. Victims of childhood physical or mental abuse
13. Result of unwanted pregnancy
14. Product of a difficult gestation for mother
15. Unhappiness in childhood resulted in inability to find happiness
16. Extraordinary cruelty to animals
17. Attraction to arson without homicidal interest
18. Symptoms of neurological impairment
19. Evidence of genetic disorder
20. Biochemical symptoms
21. Feelings of powerlessness or inadequacy