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Analysis Service

The Psychological Forensic Division provides legal assistance by applying psychological principles for various demands of the judicial system, such as crime prevention, investigations, trials and correction fields.
The division performs tasks to collect criminal information by helping victims and witnesses recall their memory through analysis of the authenticity of statements through measurements of physiological responses and analysis of verbal and behavioral responses, personality and cognitive ability assessment, inference of psychological process leading to suicide, cognitive interviews and hypnosis.

  • Analysis of the authenticity of statements

    Psychophysiological examination, EEG and statement analysis to confirm the truth of statements

  • Psychology Assessment

    Comprehensive assessment for personality, intelligence, cognitive and emotional states that help legal judgment

  • Forensic Hypnosis·
    Forensic Cognitive Tests &
    Montage Creation

    Forensic hypnosis·forensic cognitive tests and montage creation to help victims and witnesses recall their memory of a crime

  • Crime Analysis

    Analysis of crime motives and crime environment, research on crime prevention

  • Psychological Autopsy

    Inference of the psychological process that led to suicide of a person based on objective data

Introduction of Laboratory

The Psychological Forensic Division consists of two laboratories, including a Psychology Research Lab to evaluate the psychology of examinees such as through psychophysiology tests to verify the truth of statements of examinees, analysis of the validity of statements, personality and cognitive ability, etc. and Crime Analysis Lab to perform research on forensic hypnosis test to help victims and witnesses recall their memory as well as the causes and methods of crimes.


01 Psychology Research Lab

The Psychology Research Lab conducts psychophysiological detection of deception to judge the authenticity of statements, psychological assessment to evaluate psychological characteristics, and research related to each field.

Psychophysiological Detection of Deception

  • Psychophysiological Detection of Deception is a psychological analysis technique using a psychophysiological response measuring device to detect and analyze psychological changes caused by remorse, fear of detection and fear of punishment, or various physiological responses caused by the memory formed when possessing information related to a crime and to infer the authenticity of the statements.
    • Scene of psychophysiological
      detection of deception
    • Equipment of psychophysiological
      detection of deception
    • Equipment of psychophysiological
      detection of deception
    • Chair for psychophysiological
      detection of deception
  • An examinee insists that he or she does not know about a knife used in a crime, but a physiological response is shown during questioning about the knife used in the actual crime.
    • Questionnaire
    • Graph

Psychological Autopsy

  • Psychological Autopsy refers to an analysis to infer the cause of suicide by examining whether the subject committed suicide and the process leading to suicide based on various data related to the subject of analysis.

Polygraph Examination

  • Polygraph examination is a test to confirm the authenticity of statements by analyzing physiological responses including breathing, skin resistance to current, cardiovascular activities (blood pressure, pulse, etc.) among the physiological responses caused by a psychological status change that occurs when people consciously lie.

Statement Analysis (Statement Validity Analysis)

  • Statement analysis is a diagnostic process to verify the hypothesis that has been set in order to analyze the potential causes of inaccurate statements through interviews, various diagnostic methods and techniques.

ERP testing (Event Related Potential)

  • ERP testing is a technique to confirm if a suspect knows about a set of information related to a crime (if information exists related to the crime in the brain of a suspect) in a situation where the suspect denies the incident by analyzing the waveform of EEG that appears when the crime-related information is presented as a stimulation. The figure below shows the positions where electrodes are attached to the scalp.
    • Placement of Electrodes (plane)
    • ERP Equipment

Psychology Assessment

  • The assessment of psychological status of a criminal and a victim is very important in the process of investigation and trial in the aspects of credibility of the statement and sentencing.
    Psychology assessment refers to the evaluation of a subject’s psychological characteristics by measuring and examining the personality, intelligence, cognitive and emotional state, and neuropsychological functions of the subject using various psychological tests.
02 Crime Analysis Lab

The Crime Analysis Lab conducts forensic hypnosis • forensic cognitive tests and crime analysis.
For forensic hypnosis · forensic cognitive tests, hypnosis and cognitive neurological techniques are applied to enhance the recall of memory when there is no physical evidence left at a crime site and the investigation needs to rely on the statement of a victim or witness, when the victim or witness finds it difficult to recall the memory related to the incident due to the psychological impact or the passage of time. The incident is reconstructed by inducing emotional stability of the victim or the witness and psychological regression into the time of the incident, and the memories for the visual and auditory clues are retrieved to be used as clues for investigation including situational and psychological clues at the time of the incident, appearance and voice of the suspect, the weapon used in the crime, the model and color of the car, etc.
In addition, criminals who committed violent crimes such as murder, rape, and arson are interviewed to collect and analyze data on the crimes and criminals, including the criminal's upbringing environment, motivation and methods of crime, and characteristics of the crime scene. The laboratory also performs research on the causes, environments, and prevention of crimes.

  • Forensic Hypnosis Test Room
  • Interactive Digital Recording Equipment
  • Scene of Forensic Hypnosis Test


Lab Photo

Laboratory Equipment

Laboratory Equipment

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Psychophysiology examination system & NFS chairs for lie detecting

Psychophysiology examination system is used to judge the authenticity of a statement by measuring the physiological response caused by the psychological change of an examinee. The Forensic Psychology Division developed NFS chairs for lie detecting, for which each part can be adjusted according to the body shape of an examinee to minimize the physical discomfort that may affect the examinee's psychological state (patent registration in 2011) and uses them for examination.

Laboratory Equipment

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Statement-Behavior analysis system

Statement-behavior analysis is a technique to judge whether a statement is true or false by using information of nonverbal behaviors, facial expressions, language and phonetic features, and emotional expressions of an examinee appearing during an interview. It can supplement the psychophysiology test result and improve the validity and reliability of authenticity examination of the statement.

Laboratory Equipment

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EEG analysis system

Used for examination of an examinee's perception of crime-related information by analyzing the EEG that appears when presenting various stimuli related to the crime to the examinee.

Laboratory Equipment

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Composite production software

Montage is created by a witness selecting facial areas (e.g., eyes, nose, mouth, hairstyle, face type, etc.) similar to a criminal from a database saved in a computer.

Laboratory Equipment

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Forensic Hypnosis – EEG Monitoring System

This equipment is used to monitor the EEG and event-related potentials of subjects during the forensic hypnosis process to help victims and witnesses memorize the event and analyze the data. It performs real-time digitalized monitoring for the relaxation and immersion of victims and witnesses during the forensic hypnosis process and emotional changes in the process of stating what they witnessed. At the same time, it makes a judgment on the accuracy of the event-related memories of the victims and witnesses in an objective and scientific way

Major Analysis Cases

Major Analysis Cases

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2004.03
불임치료목적으로 복용한 반묘(cantharides)에
의한 사망사건

강원도 원주시 한의원에서 불임치료목적으로 지은 한약, 한약가루약(일명 반묘가루) 및 한약추출액을 혼합하여 마신 직후 환자가 사망하였으며, 감정결과 위 내용물 및 혈액에서 칸타리 딘(cantharidin)이 검출됨. 칸타리딘은 반묘의 주성분으로 치사량이 10mg이고 과량복용시 복통, 이질, 토혈, 혈뇨, 혈압 저하 등에 이어 사망한다고 알려져 있음