salfati april 2013 pa forensic workshop - participant handbook
TRANSCRIPT
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
Criminal Profiling& Sex Offending
Pennsylvania Forensic AssociatesApril 19th2013
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
()
,
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, , () 1976 2007 132 (.., ,
, ),
:
I (E )
Claim
The murderer is
under 30 years
Backing
Research by X (date)
Warrant
Majority of offenderswho murder women under 35 yearsare themselves 30 year old
Grounds
Because thisis the murderof a 23 yearold woman
Modality
87% chance that...
11(Alison, Smith, Eastman & Rainbow, 2003)
Extent to which we can rely on this information
(rather than probably, possibly etc.)
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
A IA (BIA)
20052007 E (, , & , ) 47 , 805 ( 305 )
96% , 63%
B 34%
C
K (BIA)
H,
:
? A ,
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Type 1
Type 2
Type 3
Characteristics
Actions
13
I D
B CE
AC,
. C & B, 1990
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
People dont always act the same way every time
Behaviour is situation influencedBehaviour changes over time
E.g. Duffy the Railway rapist
Linking
Need to understand influence of situation on behavior& how can be seen at crime sceneLook at the psychological meaning of the behavior
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10 GAGGED
11 BD
Is this last victim part of the same series?
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The Science
CONTROLLING PSEUDO INTIMATE
C P
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
Canter 2000
1 - 2 - 3 1 - 2 - 3
A C
, , & , .
Evaluation:
Are subgroups distinct?
Key issues:oMotivation basedoMeasures that discriminateo Frequencies largely overlooked in classification
workoNo practical classification criteria
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
o Role of frequencies largely overlooked inclassification work
o Need to provide guidelines for:
- Measurement
- Individual differentiation
- Criteria for classification
(C, 2000)
(C, 2000)
(2003)H C
I
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
(C, 2000)
(2003)
73% B60% B .. CA !
(C, 2000)
H ?
H , ?
H IF ?
H ?
H D
26
(Based on Salfati& Canter 1999 model
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
&
D & FBI
IPRU POLICE TRAINING
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
(A) (C)
Offender Profiling
A1 A2 A3 ... C
A1 A2 A3 ... C
Behavioral Consistency
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
,
( )
://..///
5 days
135 subject matter experts
10 countries, 5 continents
Law Enforcement
Prosecution & Defense
Media
Academics Clinicians
38,500,000
21,400,000
17,800,000
8,640,000
28,900
20,500
23,000
18,600 36
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
22 /
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C & C
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C & , 1987; , 1991,, 1991
A . 2007
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
B B
.. C . 2004,
B E ( ) ( )
C
D & E
?C
Individual behaviorPsychological type/theme
DescriptivePsychological
May increase chances of e.g. linking
The Influence of the Unit of Analysis
Key Questions
oDo offenders always engage in the same behaviors across e.g. their series?
oUnit of analysis we use, may affect the nature of the results we obtain
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
2
:1. 2.
B (2007) () C C 1/6
B (2005) (2613%)
The Influence of the Unit of Analysis
C
E
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
( )
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
,
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2. "
1.
2. 3.
,
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
&
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
1880s - First known profile of aserial killer by Police surgeon Dr.Thomas Bond in the UK
65
66
The plan was I wanted to kill as many women Ithought were prostitutes as I possibly could. Ipicked prostitutes as my victims because I hate
most prostitutes and I did not want to pay them forsex. I also picked prostitutes as victims becausethey were easy to pick up without being noticed. Iknew they would not be reported missing rightaway, and might never be reported missing. Ipicked prostitutes because I thought I could kill asmany of them as I wanted without getting caught
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
(, , )
7382%* 3768%
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19982000, 2.7% ()
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C. Gabrielle Salfati (2013)
Investigative Psychology Unit (IPRU)
73(Canter & Heritage 1990)
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