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Psychopathy
Distinctive pattern of psychological, interpersonal, and neurophysical traits including little empathy, emotional deficits, and frequent lying.
Sociopath
Engage in repetitive crime, have a sense of morality, and show genuine empathy for others despite criminal behavior.
Antisocial behavior
Actions that violate social norms and disregard the rights of others, often seen in both psychopaths and sociopaths.
Serial Murder
Separate killings of a number of people over time (at least 3), with periods of 'cooling off' between murders.
Mass Murder
Killing of at least 3 people at one location with no cooling off period.
1st degree murder
The unlawful killing of another human with premeditation and malice aforethought.
Instrumental violence
Injury of an individual secondary to acquisition of some other goal.
Visionary Serial Killer
Motivated by delusions or hallucinations that compel them to kill.
Hedonistic Serial Killer
Kills for pleasure, excitement, or thrills; includes lust and thrill killers.
Power-Control Serial Killer
Kills for the satisfaction of total control over life and death of the victim.
Cool Off Period
The interval of time between separate killings by a serial killer.
Jeffrey Dahmer
Known as the Milwaukee Cannibal; committed dismemberment, cannibalism, and necrophilia.
Ted Bundy
A prolific serial killer who murdered over 30 women across multiple states, often using charm to lure victims.
Edward Gein
Notorious serial killer who robbed graves and created items from body parts; found unfit for trial.
Dennis Rader (BTK Killer)
Murdered 10 people between 1974 and 1991, taunted police, was caught through DNA evidence.
Gary Leon Ridgeway (Green River Killer)
Murdered 40 to 70 women, mostly sex workers; caught using DNA technology.
Multiple Murder
Killing multiple individuals, may refer to spree or mass murders.
4 Factor Approach to Psychopathy
Includes interpersonal, impulsive lifestyle, affective, and antisocial tendencies.
Reactive/Expressive Violence
Physical violence triggered by a hostile reaction to a perceived threat.
Manslaughter
Unintended killing of another person, often due to mitigating factors.
Hostile Attribution Bias
Tendency to interpret others' actions as harmful, even when they aren't.
Triarchic Model of Psychopathy
Includes boldness, meanness, and disinhibition as personality factors associated with psychopathy.