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Investigative Psychology

by: Kirsten Notetaker

Investigative Psychology

Marketplace > Lewis University > Psychology > > Investigative Psychology
Kirsten Notetaker
Lewis University

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About this Document

Notes covered week 3
Forensic Psychology
Dr. Bristow
Class Notes
25 ?




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This 2 page Class Notes was uploaded by Kirsten Notetaker on Wednesday September 14, 2016. The Class Notes belongs to at Lewis University taught by Dr. Bristow in Fall 2016. Since its upload, it has received 4 views. For similar materials see Forensic Psychology in Psychology at Lewis University.

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Date Created: 09/14/16
Investigative Psychology Investigative psychology profiling  One who examines evidence from the crime scene, victims, and witnesses in an attempt to construct and accurate psychological and demographic description of the individual who committed the crime  Those who do profiling are typically not psychologists, but rather individuals who have been trained and advanced through a law enforcement agency like the FBI  The sketching of significant psychological and demographic features of a person or persons  Criminal profiling - the process of identifying personality traits, behavioral tendencies, geographical location, and demographic or biographical descriptors of an offender based on characteristics of the crime  Crime scene analysis - the development of a rough behavioral of psychological sketch of an offender based on clues identified at the crime scene  Factors in prediction - predicting and profiling human behavior is a difficult task Dynamic risk factors - factors that change over time and situation, they are  divided into stable and acute o Stable - factors that are changeable but very slowly-over months and years o Acute - factors that change rapidly, within minutes, hours, or days  Static risk factors - factors that are stable and do not change  Modus opernadi - the means, actions, and procedures an offender uses to commit the crime  Signature - a symbolic communication by the offender that goes beyond what is necessary to commit a crime  Organized crime scene - indicated planning and premeditation on the part of the offender, they maintained control while committing the crime  Disorganized crime scene - indicates no planning or premeditation, offender may have been impulsive or rageful  Mixed crime scene - indicated planning that eventually became influenced by emotion in disorganization  Undoing - the offender attempts to psychologically undo the crime scene  Staging - the intentional alteration of a suicide or crime scene prior to the arrival of the police  A reasonable determination of what may have been the mind of the deceased person leading up to and at the time of death - particularly if the death appears to be a suicide  Psychological autopsies are typically conducted to reconstruct the possible reasons for the suicide and ultimately to establish legal culpability on the part of other persons or organizations  Geographical profiling - the analysis of geographical locations associated with the spatial movements of a single serial offender  Geographical mapping - analyzing the spatial patterns of crimes committed by numerous offenders over a period of time  Forensic hypnosis o Hypnosis is used to gather significant information regarding a crime o Factors for inducing hypnosis 1. The level of trust between the participant and hypnotist 2. Participant's motivation and desire to cooperate 3. Preconceived notions the participant has about hypnosis 4. The context and reasons for the hypnosis  Identifying a face o Unconscious transference - this occurs when a person seen in one situation is confused with a person seen in another situation o Own-race bias - the finding that people are often better able to discriminate between faces of their own race than between those of other races of people of color  The lineup o Functional size - number of participants in a lineup who resemble the suspect o Nominal size - actual number of members within a police lineup who may or may not resemble the suspect o Commitment bias - the phenomenon that once a witness commits to a certain viewpoint, such as identification of a face, the witness is less likely to change his/her mind o Show up - identification procedure in which police present a single suspect to the eyewitness to see if the eyewitness will identify that person as the perpetrator o Trans-temporal consistency - the assumption that human behavior is consistent across place o Nomothetic approach - the search of general principles, relationships, and patterns by examining and combining date from many individuals o Idiographic approach - the focus or study of one individual o Confirmation bias - the tendency to look for evidence that confirms pre-existing expectation or beliefs  The effectiveness of profiling o In regards to sex offenders, profilers were twice as high as detectives, 3x higher than psychologists, 5x higher than students o With respect to homicide, there was no significant different between the groups


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