Chapter 3: Psychology of Investigations Flashcards
Investigative psychology
Umbrella term that refers to a scientific approach designed to improve our understanding of criminal behavior and the investigative process.
Investigative psychologist studies fall into three broad categories
1) the nature of the offender behavior
2) the social psychology of group crime and terrorism
3) cognitive psychology of investigative decision making by law enforcement investigators
Profiling
Profiling is a technique that tries to identify the behavioral, cognitive, emotional, and demographic characteristics of a person based on information gathered from a wide range of sources.
Crime scene profiling
The development of a rough behavioral or psychological sketch of an offender based on clues identified at the crime scene. Also may be referred to as offender profiling.
Crime scene profiler tries to predict…
Characteristics and habits of the offender and where and how the person’s next crime may occur, assuming that another crime will be committed
Case linkage analysis (CLA)
Method of identifying crimes that are likely to have been committed by the same offender because of similarities across the crimes.
Confirmation bias
The tendency to look for evidence that confirms one’s preexisting expectations or beliefs.
There seems to be a tendency for some police investigators to interpret ambiguous information sometimes contained within profiles to fit their own biases about the case or the suspect
Geographical profiling
Focuses on the location of the crime and how it relates to the residence or base of operations of the offender. Assumes that serial offenders prefer to commit their crimes near their own residences.
Geographical mapping
Concerned with analyzing the spatial patterns of crimes committed by numerous offenders over a period of time.
Focuses on identifying the “hot spots” of certain types of crimes.
Geographical profiling’s connection to psychology
Can be connected to psychological principles
- Such as the need to operate within one’s comfort zone or the desire to commit crime as far away from one’s home as possible
Suspect-based profiling
The process of collecting data on behavioral, personality, cognitive, and demographic data on previous offenders in an attempt to identify other offenders. Often used to detect drug trafficking and terrorism-related criminal activity.
The suspect-based profile summarizes the psychological features of persons who may commit a crime based on features of past individuals who have committed similar crime
Psychological profiling
The gathering of information on a known individual who poses a threat or is believed to be dangerous.
In some cases, the identity of the individual is unknown
Threat assessment
Concerned with predicting future violence or other undesirable actions targeted at specific individuals or institutions after an expressed threat has been communicated.
Used to determine if an actual, expressed threat is likely to be carried out
Risk assessment
A systematic process of evaluating the likelihood that a person will engage in dangerous behavior, even though the person has not made a direct or implied threat.
Used to determine if a person is dangerous to self or to others
Psychological autopsy
Primarily undertaken in an effort to make a reasonable determination of what may have been in the mind of the deceased person leading up to and at the time of death - particularly if the death appears to be a suicide.
Person’s mental state prior to death
Equivocal death
An equivocal death is one where the manner of death is unknown or undetermined —> believed that 5% to 20% of all deaths are equivocal
Suicide psychological autopsy (SPA)
Goal —> identify and understand the psychosocial factors that contributed to the suicide
Equivocal death psychological autopsy (EDPA)
Goal —> clarify the manner (or mode) of death and to determine the reasons for the death