Criminological Characteristics and Criminal Responsibility Capacity of Offenders with Alcoholism / 中山大学学报(医学科学版)

ObjectiveTo analyze the criminal behavior characteristics of alcohol-related crime offenders and explore the relationship between criminal behavior characteristics and criminal responsibility capacity. MethodsBasic information， alcohol use information， psychiatric symptoms before and after the crime， criminological behavioral characteristics and conclusion of judicial evaluation were collected. ResultsThe drinking history of the chronic alcoholism group 25.0 （13.3~30.0） years was significantly longer than that of the acute alcoholism group 1.2 （0~14.3） years. In the chronic alcoholism group， 85.0% drank alcohol at least once a day， 52.5% had morning or bedtime drinking habits， and 92.5% drank mainly alone. Violent crimes accounted for 57.6%. Delirium existed in 52.5% of the chronic alcoholics' mental state at the time of the crime， and 84.6% of the acute alcoholics' mental state was hazy. In the chronic alcoholism group， 42.5% committed the crime with pathological motive， and in the acute alcoholism group， 69.2% committed the crime with realistic motive. Acute alcoholism group 96.2% were assessed as complete criminal responsibility capacity， and chronic alcoholism group 50.0% were assessed as complete criminal responsibility capacity. ConclusionCompared with acute alcoholism offenders， chronic alcoholics had a longer drinking duration， more frequency drinking， and obvious morning drinking or bedtime drinking habits. The nature of alcoholism crime cases was mostly violent. Compared with the chronic alcoholism group， the acute alcoholism group had highly selective motives for committing crimes and were mostly rated as complete criminally responsibility.

Perspectivas éticas e legais em perícias de psiquiatria forense / Ethical and legal perspectives of forensic psychiatry in expert testimony / Perspectivas éticas y legales en pericias de psiquiatría forense

Resumo Conhecer o paradigma ético que fundamenta o código moral da medicina é fundamental para atuar não só na assistência, mas também em processo pericial. A partir de revisão da literatura, propõe-se avaliar a maneira como os quatro princípios éticos fundamentais (beneficência, não maleficência, autonomia e justiça) se aplicam antes, durante e após a perícia psiquiátrica, como perito ou como assistente técnico. Novos desafios éticos vêm surgindo na psiquiatria forense. Com a pandemia de covid-19, a tecnologia foi adotada para permitir a prática da telemedicina, mas ainda se debate se seria suficiente para promover avaliação pericial psiquiátrica adequada. Considerando a complexidade da área, cada situação deve ser analisada de forma individual e abrangente, sendo recomendável buscar auxílio para debater as perspectivas éticas e legais das perícias psiquiátricas quando necessário.

Abstract Knowing the ethical paradigm that bases the medicine moral code is fundamental to act not only in care but also in the expert testimony process. From a revision of the literature, we propose to evaluate the way the four fundamental ethical principles (beneficence, nonmaleficence, autonomy, and justice) apply before, during, and after the psychiatric expert testimony, be it as expert or as technical assistant. New ethical challenges have been appearing in forensic psychiatry. With the COVID-19 pandemic, technology was adopted to allow the practice of telemedicine, but debates still occur if that would suffice for an adequate psychiatric expert testimony evaluation. Considering the complexity of the area, each situation must be analyzed in an individualized and all-encompassing way and seeking help to debate the ethical and legal perspectives of psychiatric expert testimonies is recommended when necessary.

Resumen Conocer el paradigma ético que subyace en el código moral de la medicina es fundamental para actuar no solo en la asistencia, sino también en el proceso pericial. A partir de una revisión bibliográfica, se propone evaluar cómo se aplican los cuatro principios éticos fundamentales (beneficencia, no maleficencia, autonomía y justicia) antes, durante y después de la pericia psiquiátrica, ya sea como perito o como asistente técnico. Están surgiendo nuevos desafíos éticos en la psiquiatría forense. Con la pandemia del Covid-19, se utilizó la tecnología para permitir la práctica de la telemedicina, pero aún está en debate si esto es suficiente para promover una adecuada evaluación psiquiátrica forense. Considerando la complejidad del área, se debe analizar cada situación de manera individual e integral y, cuando sea necesario, buscar ayuda para debatir las perspectivas éticas y legales de la pericia psiquiátrica.

Progress of Keystroke Dynamics in Deception Research / 法医学杂志

Traditional polygraph techniques mostly rely on the changes of an individual's physiological indicators, such as electrodermal activity, heart rate, breath, eye movement and function of neural signals and other indicators. They are easily affected by individual physical conditions, counter-tests, external environment and other aspects, and it is difficult to conduct large-scale screening tests based on the traditional polygraph techniques. The application of keystroke dynamics to polygraph can overcome the shortcomings of the traditional polygraph techniques to a large extend, increase the reliability of polygraph results and promote the validity of legal evidence of polygraph results in forensic practice. This paper introduces keystroke dynamics and its application in deception research. Compared with the traditional polygraph techniques, keystroke dynamics can be used with a relatively wider application range, not only for deception research but also for identity identification, network screening and other large-scale tests. At the same time, the development direction of keystroke dynamics in the field of polygraph is prospected.

Application Prospect of Integrative Omics in Forensic Identification of Methamphetamine-Associated Psychosis / 法医学杂志

The clinical symptoms and signs of methamphetamine-associated psychosis (MAP) and schizophrenia are highly similar, but the situation is completely different when MAP and schizophrenia patients need to be assessed for criminal responsibility after they comitted a harmful behavior. Therefore, the distinction between the two psychoses is very important in forensic psychiatry. At present, the identification of these two psychoses is mainly dependent on the corresponding criteria such as the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) and the Chinese Classification of Mental Disorders Version 3 (CCMD-3). It's challenging to diagnose and distinguish between the two in practical cases due to their similar clinical symptoms and the lack of effective objective indexes. Different from the limitations of single omics, integrative omics intergrates data from multiple dimensions and has been extensively studied in the field of schizophrenia and has achieved some preliminary results. In view of the correlation between MAP and schizophrenia and the potential application value of integrative omics, this paper proposes an integrative omics strategy for MAP pathogenesis and forensic identification, aiming to improve the further understanding of the relationship between the two psychoses and the corresponding pathogenesis. It also provides references for the future exploration of integrative omics in forensic precise identification and effective monitoring and early warning methods.

The Legal Correspondence of Sexual Self-Defense Capability Assessment / 法医学杂志

OBJECTIVES@#To understand the legal application and case deposition of assessment opinions of sexual self-defense capability, and to explore the necessity of legal correspondence in the sexual defense capability assessment.@*METHODS@#According to the self-made questionnaire, the cases of sexual self-defense capability assessment completed by the Academy of Forensic Science from January 1, 2012 to December 31, 2018 were statistically analyzed through telephone interviews and referrals.@*RESULTS@#Among the 69 cases, 3 cases (4.3%) had complete sexual self-defense capability, 30 cases (43.5%) had weakened sexual self-defense capability, 32 cases (46.2%) had no sexual self-defense capability, and 4 cases (5.8%) were not suitable for assessment. Among the 30 cases with weakened sexual self-defense ability, 15 cases were filed and investigated by public security authorities for rape and 15 cases were not. The inconsistent rate of disposition was 1∶1. Among the 15 rape cases filed and investigated by the public security authorities, 10 cases were arrested and prosecuted by the procuratorate and sentenced to fixed-term imprisonment by the court, while the other 5 cases were not arrested and prosecuted by the procuratorate, with an inconsistent rate of disposition being 2∶1.@*CONCLUSIONS@#The legal application of the assessment opinion on the weakening of sexual self-defense capability is inconsistent, and the judicial disposition is confusing. It is imperative to unify and correspond the classification of sexual self-defense capability with the legal requirements.

An Epidemiologic Survey and Violent Behavior Analysis of Antisocial Personality Disorder in Young Men in Chengdu / 法医学杂志

OBJECTIVES@#To investigate the epidemiological characteristics of antisocial personality disorder (ASPD) in young men in Chengdu and explore the characteristics and risks of violence.@*METHODS@#Stratified random sampling was used to conduct a self-assessment questionnaire survey in 4 108 males aged from 18 to 34 in Chengdu, including general demographic characteristics, structured clinical interview for the diagnostic and statistical manual of mental disorders-Ⅳ axis Ⅱ disorders (SCID-Ⅱ) personality disorder screen questionnaire, violence questionnaire, psychosis screening questionnaire (PSQ), Alcohol Use Disorders Identification Test (AUDIT) and drug use. χ2 test, univariate and multivariate logistic regression were used for analysis and odds ratio (OR) was calculated.@*RESULTS@#The positive rate of ASPD was 5.91%, which was associated with young age, unmarried, unemployment state, low educational level, violent behavior, psychotic symptoms, alcohol and drug use (P<0.05). Young men with ASPD also had a risk (P<0.05) of violence (OR was 8.51), multiple violence (OR was 16.57), injury (OR was 6.68), intentional violence (OR was 11.41), etc., the risk decreased after controlling for psychotic symptoms and substance abuse, but was still statistically significant.@*CONCLUSIONS@#The risk of violence, severe violence and intentional violence in young men in Chengdu is high, and psychotic symptoms and substance abuse increase the risk of ASPD violence and relate characteristics.

Analysis on mental-insanity and cessation-of-dangerousness examinations in three Brazilian custodial institutions: a retrospective cross-sectional study

ABSTRACT BACKGROUND: In Brazil, the right to healthcare and the incorporation of best scientific evidence in public health are universally guaranteed by law. However, the treatment offered to patients with mental disorders in custodial hospitals in this country has not been rigorously evaluated. OBJECTIVES: To analyze the psychiatric diagnoses and treatments implemented in three Brazilian custodial institutions. DESIGN AND SETTING: This was a retrospective, cross-sectional and descriptive study on patients held in custody in three Brazilian institutions, as judicially-determined safety measures due to their mental disorders, and the tools used in diagnoses and treatments. These institutions are in Rio de Janeiro and the Federal District. METHODS: The data from medical and judicial records that were made available were assessed regarding the diagnoses that were made and the instruments that were used. RESULTS: None of these inpatients were evaluated using validated tools, and only a few medical records presented clear descriptions of the cases. No patient with substance involvement had undergone laboratory toxicological assays. It was not possible to verify the adequacy of treatments because the procedures were inadequately described in the records. CONCLUSIONS: No standardized protocols or instruments for diagnosing mental health disorders or assessing use of psychoactive substances had been applied among the inpatients at these custodial institutions in Rio de Janeiro and the Federal District. The treatments that were prescribed to these inpatients consisted mainly of drugs.

Forensic Analysis of 105 Autopsy Cases of Psychiatric Patients / 法医学杂志

Objective To provide reference for medical and health services and forensic expertise, the causes and manners of death of psychiatric patients were analyzed retrospectively. Methods A total of 105 autopsy cases of psychiatric patients accepted and settled by Institute of Forensic Science of Criminal Investigation Police University of China from 2004 to 2019 were collected. The cases were divided into four groups： disease death, suicidal death, accidental death and homicidal death. The common causes of death of each group were statistically analyzed and the differences in age, disease duration, body mass index （BMI） and gender among the groups were assessed. Results Of the 105 cases, 60 were male and 45 were female, the course of psychosis was （12.9±10.4） years, the age of the deceased was （51.3±11.4） years, and 61.0% was schizophrenic. There were 50 cases （47.6%） in the disease death group, in which the psychiatric patients were the oldest and had the longest course of psychosis and lowest BMI. Pulmonary thromboembolism, respiratory infections, and cardiogenic disease were the most common causes of death in the group. There were 26 accidental deaths （24.8%）, among which traffic accidents were the most common cause of death. There were 15 homicidal deaths （14.3%）, all of which were male, with craniocerebral injury being the most common cause of death. There were 14 suicidal deaths （13.3%）. In suicidal death group, the age of the deceased was the youngest, the course of psychosis was the shortest and falling from the height was the most common way to commit suicide. Conclusion Understanding the common causes of death of psychiatric patients may contribute to developing measures to reduce the mortality rate of the population. It is necessary to investigate the age, course of psychosis and gender of the deceased when assessing the manner of death.

Analysis of Post-Concussion Syndrome Disability Re-appraisal / 法医学杂志

OBJECTIVES@#To understand the current status of appraisal of post-concussion syndrome disability and the reasons for the changes in re-appraisal opinions.@*METHODS@#The cases that were judged as "post-concussion syndrome and ten-level disability" in the first appraisal and re-appraised for psychiatric impairment by the Academy of Forensic Science in 2019 were analyzed retrospectively.@*RESULTS@#There were 75 cases, including 58 cases with pre-hospital emergency medical records, among which 39 cases were clearly recorded to be without a history of coma; 74 cases had emergency medical records, among which 44 cases were recorded of having a history of coma; 43 cases had follow-up medical records, among which 24 cases had a history of psychiatric follow-up. The most complained symptoms of the appraisee in appraisal and examination include headache, dizziness, poor sleep at night, irritability, memory loss, fatigue and inattention. The main reasons for the re-appraisal application include doubts about the history of coma, doubts about the credibility of mental symptoms, post-concussion syndrome didn't meet the disability criteria, and objections to the original appraisal procedure or the original appraisal agency. The appraisal opinions of a total of 47 cases were changed. Seven of them did not meet the disability criteria, and the main reason was that there was no clear history of coma and no head injury was admitted; the coma history of the 40 other cases had to be confirmed by the court before they can be clearly identified as disabilities. The reason was that the records about the history of coma were inconsistent or there were alterations and additional information.@*CONCLUSIONS@#In the past, the conditions for appraisal of post-concussion syndrome disability were too lax and must be further standardized and strictly controlled.

Set-Up Madness: A Review

@#Psychosis can be defined as a mental disorder in which a person’s thoughts, affective response, ability to recognize reality, and ability to communicate and relate to others are sufficiently impaired to grossly interfere with his or her capacity to deal with reality. The classical characteristics of psychosis are impaired reality testing, hallucinations, delusions, and illusions. While factitious disorder and malingering are usually acknowledged as contrived psychiatric conditions for acquisition of interior or exterior profits, respectively, another alternative, also, exists that though is not manufactured individually, is enforced peripherally. Such cases, which are usually referred by the judge’s ruling, for evaluation and treatment, are more important than comparable simulated or genuine mental conditions, because incorrect diagnosis, or careless, cagily, and guarded validation of preliminary diagnosis that has been issued in the authorized or emergency department, can seriously endanger the individual’s civil rights, while it should not be overlooked that incorrect diagnosis is a kind of malpractice that may harm an individual awfully. In the present article the clinical picture of the said situation, in addition to some case histories, and recommendable hints for differential diagnosis between different types of psychoses, has been discussed.

Reinserción social en la unidad de Psiquiatría Forense en Sancti Spíritus / Social reintegration in the Forensic Psychiatry unit in Sancti Spíritus

RESUMEN Fundamento: la Psiquiatría Forense es la aplicación de los conocimientos psiquiátricos al proceso de administración de justicia. Objetivo: describir el comportamiento de la reinserción social en la Unidad de Psiquiatría Forense de Sancti Spíritus. Métodos: se comunican los resultados del estudio del comportamiento de los asegurados en la Unidad de Psiquiatría Forense de Sancti Spíritus 2016 al 2018. Resultados: predomina el grupo etáreo entre 24 a 35 años, sexo masculino, la esquizofrenia paranoide con los neurolépticos atípicos como modalidad de tratamiento psico farmacológico más utilizado. Se lograron cambios positivos, que ayudó a la solicitud de cese de medida con su posterior reinserción social. Conclusiones: con la aplicación integral de terapias, se logran cambios que permiten la reinserción social, disminuye el riesgo de que puedan delinquir o violentarse en un futuro.

ABSTRACT Background: Forensic Psychiatry is the application of psychiatric knowledge to the justice administration process. Objective: to describe the behavior of social reintegration in the Forensic Psychiatry Unit of Sancti Spiritus. Methods: the results of the study of the behavior of the insured in the Forensic Psychiatry Unit of Sancti Spiritus 2016 to 2018 are communicated. Results: it predominates the age group between 24 to 35 years, male sex, paranoid schizophrenia with atypical neuroleptics as modality of most commonly used psycho-pharmacological treatment. Positive changes were achieved, which helped the request to cease the measure with its subsequent social reintegration. Conclusions: with the integral application of therapies, changes are achieved that allow social reintegration, reducing the risk that they may commit crimes or be violent in the future.

The relevance of Mini Mental State Examination (MMSE) use on demential interdiction exams in judicial proceedings / A importância do Miniexame do Estado Mental (MEEM) nos exames de interdição demencial em processos judiciais

ABSTRACT Objective To highlight the important role of Mini Mental State Examination (MMSE) use on judicial interdiction assessments. Methods On this paper, we present a case in which we have used the Mini mental state examination (MMSE) for screening an initial dementia diagnosis, suggested by clinical and mental state examination. Results The relevance of using a screening test for demencial states on judicial interdictions assessments, as MMSE, in order to provide more objective findings to the court, has been demonstrated. Also, we review the current evidence for using MMSE on this setting and the importance of its use on demential interdiction exams in judicial proceedings. Conclusions Judicial evidence is a critical element in decision making. Judicial interdiction assessment is usually performed by expert psychiatrists. As psychiatric diagnosis relies on clinical history and mental state examination, it is composed of subjective elements, varying also according to the examiner's personal technical orientation and impressions. Neuroimaging exams are helpful on a minority of cases, in which specific findings are present. In such cases, clinical screening questionnaires play an important role - providing objective elements of neuropsychic functioning of an individual, thus limiting the subjective realm of the expert forensic report.

RESUMO Objetivo Destacar a importância do uso do Miniexame do Estado Mental (MEEM) nas perícias de interdição judicial por demência. Métodos Neste artigo, apresentamos um caso no qual aplicamos o MEEM para rastreamento de demência inicial, cujo diagnóstico foi sugerido por meio de história clínica e exame do estado mental. Resultados Foi demonstrada a importância de usar um teste de rastreamento para demência, no caso o MEEM, nas perícias de interdição por esse diagnóstico, a fim de fornecer elementos mais objetivos ao juízo. Ainda, fornecemos uma revisão das evidências atuais para a aplicação do MEEM nesse contexto, bem como a importância do uso dele nas perícias de interdição por demência. Conclusões A prova pericial é um elemento crítico para a tomada de decisão judicial. A perícia de interdição judicial por demência é usualmente realizada por especialistas em psiquiatria. Como o diagnóstico psiquiátrico baseia-se na história clínica e no exame do estado mental, é composto de elementos subjetivos, variando de acordo com a técnica e impressão individual do examinador. Exames de neuroimagem são úteis em uma minoria de casos, nos quais achados específicos estão presentes. Assim, questionários clínicos para rastreamento de doenças mostram-se importantes, pois fornecem elementos objetivos do funcionamento neuropsíquico do indivíduo, diminuindo o papel da subjetividade no laudo pericial.

Research Status and Limitations of Sadomasochism / 法医学杂志

Sadomasochism is the sexual interest, psychosexual deviance or sexual crimes that are sexually aroused by suffering or causing others to suffer. This study summarizes the concept, assessment and diagnosis, categories and symptoms, psychological and biological mechanisms, judicial disposition and clinical intervention strategies of sadomasochism from the perspectives of clinical medicine, law, criminology and psychology, suggests that further research should take local people with sadomasochism preference and local patients as research objects, pay attention to different types of sadomasochists, conduct bottom-up research, explore the core elements and manifestations of sadomasochism, and accurately define and classify sadomasochism, construct an effective scale, a erectile measurement sexual stimulation system and a diagnostic criteria; discuss evaluation methods combined with crime scene data; discuss the validity of masochists' consent combined with diagnosis; establish targeted criminal correction programs and a treatment and rehabilitation system to provide reference for the improvement of medical, judicial and mental health services.

Analysis of 123 Cases of Forensic Psychiatry Testimony of Individuals Suspected of Road Traffic Offences / 法医学杂志

Objective To explore the characteristics of individuals with mental disorders suspected of road traffic offences and to find their differences from normal offenders, in order to regulate mental disorder patients' driving activities and prevent road traffic offences. Methods One hundred and twenty-three cases of forensic psychiatry testimony of individuals suspected of road traffic offences between 2014 and 2019 from the West China Forensic Center of Sichuan Province were collected. Fisher exact probability test was used to compare the differences between offenders with mental disorders and without mental disorders in terms of demographic characteristics, criminological characteristics, psychiatric characteristics and criminal responsibilities. Results There was no statistical significance in the differences of demographic characteristics, vehicles and kinds of alcohol between the two groups （P>0.05）. The main type of road traffic related crimes committed by offenders with mental disorders was risky driving and were mainly evaluated as partial criminal responsibility, whereas most offenders without mental disorders committed crime of causing traffic casualties and all were evaluated as full criminal responsibility. There was statistical significance in the differences of the types of crime and the criminal responsibility rating between the two groups （P<0.05）. Meanwhile, patients with mental disorders were characterized by long course of disease and irregular treatment, and individuals diagnosed as having mental disorders caused by psychoactive substances accounted for a large proportion. Conclusion There are differences in the characteristics of road traffic-related crimes between mental disorder patients and normal people. It is of great practical significance for reducing road traffic offences to evaluate whether the individuals with mental disorders are fit for driving.

Analysis of Correlation between Gene Polymorphisms of CRHBP in Yunnan Han Population and Schizophrenia and Aggressive Behavior / 法医学杂志

Objective To explore the correlation between 4 tag single nucleotide polymorphisms （Tag SNP） sites （rs7721799, rs32897, rs7718461, rs10062367） of corticotropin releasing hormone binding protein （CRHBP） and schizophrenia and aggressive behavior in the Yunnan Han population. Methods Case-control correlation analysis was used to establish a complex amplification system. Improved multiplex ligase detection reaction （iMLDR） technology was used to detect the genotypes of 4 SNP sites of CRHBP gene of 163 Han schizophrenic patients （including 81 patients with aggressive behavior, 82 patients without aggressive behavior） and 345 healthy Han individuals, which were analyzed statistically by SPSS 19.0, Haploview 4.2 and PHASE 2.1 software. Results There was no correlation between the 3 SNP sites of CRHBP gene and the onset of schizophrenia except for the rs7718461 site （P>0.05）. The relative risk of aggressive behavior of patients carrying GG or GA genotype at rs7718461 site were 4.903 times higher than those carrying AA genotype （P<0.05）. Conclusion The CRHBP gene may not be associated with the occurrence of schizophrenia in Yunnan Han population, but AA genotype of rs7718461 may reduce the risk of aggressive behavior in schizophrenia patients.

Research Progress on the Relationship between Genetic Polymorphism and Violent Behavior of Patients with Schizophrenia / 法医学杂志

Schizophrenia is a common disease characterized by thinking obstructions and accompanied by cognitive, emotional and behavioral disorders. Under the control of psychiatric symptoms, patients with schizophrenia may self-injure or impulsively wound others, resulting in public risk and increase in the burden of family and society. In recent years, many studies have shown that the violent behavior of patients with schizophrenia is related to genetic factors. This article reviews the research progress on the relationship between genetic polymorphism and violent behavior of patients with schizophrenia, analyzes the possible mechanism of the correlation between the two, puts forward the limitations of current research and the directions of future research, and provides scientific basis for risk assessment and prevention of violent behavior of patients with schizophrenia.

Analysis of Consistency between Forensic Psychiatry Identification Diagnosis and Clinical Diagnosis of 1 369 Cases / 法医学杂志

Objective To explore the consistency between identification diagnosis and pre-identification clinical diagnosis of patients with mental disorder undergoing forensic psychiatry identification. Methods The identification data of 1 369 appraised individuals who underwent criminal responsibility identification carried out by the Forensic Institute of Second Affiliated Hospital of Jining Medical University from 2014 to 2017 were collected retrospectively using self-designed investigation data sorting table. A comparative analysis of the mental disorder diagnosis results of expert opinion and past clinical diagnosis results was made. Results Among 1 369 appraised individuals, 964 cases （70.4%） were identified and diagnosed with mental disorder and 405 cases （29.6%） without mental disorder. Among the former, 63.3% （610 cases） were clinically diagnosed, which was higher than 43.2% （175 cases, P<0.05） in the latter. Among the various mental disorders that had been identified and diagnosed, patients with hysteria, stress, and neurosis had the highest proportion of clinical diagnoses （86.7%）, while patients with mental retardation had the lowest proportion of clinical diagnoses （9.6%）. Schizophrenia had the highest overall consistency rate of identification diagnosis and clinical diagnosis （98.4%）, while personality and behavior disorder had the lowest （33.3%）. The overall consistency rate between clinical diagnosis and identification diagnosis of the mental disorder group was 84.1%, and the Kappa value was 0.759. Compared with clinical diagnosis, the consistency rate between inpatient diagnosis and identification diagnosis was higher （85.9%, P<0.05）. Conclusion In forensic psychiatry identification that provides data of past clinical diagnosis and treatment, a high consistency between identification diagnosis and clinical diagnosis of the appraised individual who is identified and diagnosed with mental disorder exists. Clinical diagnosis （especially the inpatient diagnosis） has a relatively good reference value for forensic psychiatry identification.

Impulse Control and ERP Characteristics of Patients with Mental Disorder Caused by Traumatic Brain Injury / 法医学杂志

Objective To explore the impulse control and event-related potential （ERP） characteristics of patients with mental disorders caused by traumatic brain injury （TBI） in forensic psychiatry identification and to provide objective auxiliary indicators for forensic psychiatry identification. Methods Thirty patients （TBI group） with mental disorders caused by traumatic brain injury, who were identified as mild psychiatric impairment by judicial psychiatry, including 24 males and 6 females, as well as the thirty people in the control group participated in the study. All the participants completed Barratt Impulsiveness Scale-11 （BIS-11） and ERP induced by Go/NoGo tasks. BIS-11 and ERP data were collected and analyzed. Results The results of the BIS-11 showed that the total score and subscale scores of the TBI group were higher compared to the control group （P<0.05）. Moreover, the TBI group exhibited significantly lower NoGo-N2 amplitude and lower NoGo-P3 amplitude than the control group. The NoGo-N2 amplitude was larger than the Go-N2 amplitude, and the NoGo-P3 amplitude was larger than the Go-P3 amplitude in both groups （P<0.05）. Conclusion Traumatic brain injury could impair impulse control of mild psychiatric impairment patients, and the amplitudes of NoGo-N2 and NoGo-P3 could be important parameters to evaluate the impulse control of patients with mental disorders caused by traumatic brain injury.

Accuracy Analysis of Distinguishing the Cooperation Degree during Image Completion Test by Eye Movement Parameters / 法医学杂志

Objective To analyze the differences in accuracy of different eye movement parameters in distinguishing the cooperation and non-cooperation during image completion test of patients with mental disorders caused by craniocerebral trauma. Methods One hundred and forty cases of patients with mental disorders caused by craniocerebral trauma who took psychiatric impairment assessments were collected. The 21 pictures from "image completion" of Wechsler intelligence test were used as stimulating pictures, then divided into cooperation group and non-cooperation group according to binomial forced-choice digit memory test and expert opinions. The eye movement parameters of research subjects during completion of images were obtained by the SMI eye-tracker. The accuracy of eye movement parameters in distinguishing the cooperation or non-cooperation of patients with mental disorders caused by craniocerebral trauma in psychiatric impairment assessments were evaluated by the ROC curve. Results During the process of the image completion test, the area under curve （AUC） value of frequency of blink, frequency of fixation, pupil size, frequency of saccade, latency of saccade, average acceleration of saccade, the average and peak longitudinal velocity of saccade was above 0.5. When it comed to a specific stimulating picture, the AUC value of frequency of blink in looking at a specific stimulating picture could be above 0.8, and the AUC value of X axis diameter of pupil size could be above 0.7. Conclusion The accuracy of eye movement parameters in distinguishing the cooperation or disguise of patients with mental disorders caused by craniocerebral trauma is related with the stimulating picture. The accuracy of frequency of blink in distinguishing cooperation and non-cooperation is better than that of other eye movement parameters.

Application of Eye Tracker in Lie Detection / 法医学杂志

Objective To investigate the application value of eye tracking in lie detection. Methods The 40 subjects were randomly divided into two groups. The pupil diameter, fixation duration, points of fixation and blink frequency of the subjects in the experimental group in observing target stimulation and non-target stimulation were recorded with eye tracker after they accomplished the mock crime. The eye movement parameters of subjects in the control group were directly collected. The differences in eye movement parameters of the experimental group and the control group in observing target stimulation and non-target stimulation were analyzed by t-test. Pearson coefficient analysis of correlation between eye movement parameters that had differences was conducted. The effectiveness of eye movement parameters to distinguish between the experimental group and the control group was calculated by the receiver operator characteristic （ROC） curve. Results Participants from the experimental group had shorter average pupil diameter, longer average fixation duration and fewer fixation points （P<0.05）, but the differences in blink frequency had no statistical significance. The differences in the above indicators of the control group in observing target stimulation and non-target stimulation had no statistical significance. The average fixation duration showed a negative correlation with fixation points （r=-0.255, P<0.05）; the average fixation duration showed a negative correlation with average pupil diameter （r=-0.218, P<0.05）; the fixation points showed a positive correlation with average pupil diameter （r=0.09, P<0.05）. The area under the curve of average pupil diameter, average fixation duration and fixation points was 0.603, 0.621 and 0.580, respectively. Conclusion The average pupil diameter, average fixation duration and fixation points obtained by the eye tracker under laboratory conditions can be used to detect lies.