chapter 5 Flashcards
Profiling
the process of drawing inferences about a criminal’s personality, behavior, motivation, and demographic characteristics based on crime scenes and other evidence.
serial killers
murderers who kill three or more people in separate events with a cooling-off period between murders
what do profilers do?
analyze the crime scenes, gather information about the victims, and study both police and autopsy reports.
Jack the ripper
First criminal profile in 1888; Killed 5 prostitutes; Never caught
The Olympic bomber
1996 summer Olympics; Within days, arrested; But no evidence linked him to the crime; Another arrest was made
The Mad bomber
1940 unexploded bomb found; Profile was accurate; Mental health problem
Characteristics of serial killers
-Brain injuries
-Abuse during childhood
-White males of average intelligence
-Intimate methods of killing
-Intoxicated
-Highly sexualized/porn addicted
-Females seek out children and elderly and more likely to be motivated by money
___% of inmates meet diagnostic criteria for psychopathy
25
Psychopath characteristics
charming, self-centered, devoid of empathy, reckless, no impulse control
Not all serial killers are _____, they are almost always rational and _____ _____ _____ ______
1) psychopaths
2) in touch with reality
Organized murderers
carefully selecting and stalking their victims and planning what they will do to them. They show patience and self-control by waiting for the right opportunity and then cleaning up evidence after the murder. They also tend to use more elaborate rituals involving torturing the victim and dismembering the corpse.
disorganized murderers
impulsive, picking their victims at random, acting on sudden rage, or following commands to kill from voices in their heads. Disorganized killers are more likely to use any weapon that happens to be available, leave the weapon at the crime scene, and use the dead body for sexual purposes
investigators used the ____ _____ _____ to assume about the killers ______ for profiling
1) crime scene organization
2) personality
Holmes classification for serial killers
visionary, mission-oriented, hedonistic, and power-oriented
visionary types
usually psychotic; they have visions or believe they hear voices from God or spirits instructing them to kill certain types of people.
mission-oriented types
are less likely to be psychotic and are motivated by a desire to kill people they regard as evil or unworthy (e.g., one set out to kill all physicians who performed abortions).
Hedonistic types
kill for thrills and take sadistic sexual pleasure in torturing their victims.
Power-oriented types
get satisfaction from capturing and controlling the victim before killing.
Geographic profiling
-Relies on maps and math
-Key locations plotted on a map
-Estimate general vicinity of work or home based on geographical comfort zone of killer
-Suggests where to look
-Proven useful in actual cases
anchor point
the location from which an offender leaves to launch attacks
buffer zone
around a criminal’s home — that is, an area in which the criminal is less likely to commit crimes
distance decay
the probability of an attack decreases as distance from past crime locations increases.
temporal sequencing
the principle that, over time, the geographical range of a serial offender’s crimes will increase
behavioral investigative advice (BIA):
stresses the role of offering advice to investigators on how to use the media, what questions might be asked during police interviews with suspects, and whether a crime might be part of a series of crimes.
Racial profiling
using race (or ethnicity) as an indicator of who might be engaged in criminal activity
Probative evidence
provides information that is useful in assessing whether a person committed a crime.
Two crucial questions for probative evidence:
-Should information about whether a defendant fits a profile be admissible in court?
-Should a defendant’s “fit” with a profile be considered evidence?
Equivocal death
: unclear the intentions behind the death
NASH system for death classification
a death can fall into one of four categories: natural, accidental, suicide, or homicide.
psychological autopsy
is an effort to dissect and examine the psychological state of a person prior to his or her death.