Dissertations / Theses on the topic 'Psychopaths Personality disorders'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Psychopaths Personality disorders.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
Patrick, Christopher John. "The validity of lie detection with criminal psychopaths." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/27507.
Full textArts, Faculty of
Psychology, Department of
Graduate
Carter, Rachel M. "Psychopathic Traits and Insecure Attachment Patterns in Community-based Subgroups." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc699993/.
Full textKreklewetz, Kimberly. "Facial affect recognition in psychopathic offenders /." Burnaby B.C. : Simon Fraser University, 2005. http://ir.lib.sfu.ca/handle/1892/2166.
Full textZanone, Charles F. "Predictors of criminality and personality subtypes among women prisoners /." free to MU campus, to others for purchase, 1997. http://wwwlib.umi.com/cr/mo/fullcit?p9842577.
Full textHenley, Aimee Gillison. "Psychopathy and career interest in a noncriminal population." Access restricted to users with UT Austin EID Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3035949.
Full textForeman, Michael Ernest. "Interpersonal assessment of psychopathy." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/42514.
Full textArts, Faculty of
Psychology, Department of
Graduate
Hart, Stephen David. "Diagnosis of psychopathy in a forensic psychiatric population." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26835.
Full textArts, Faculty of
Political Science, Department of
Graduate
Harpur, Timothy John. "Visual attention in psychopathic criminals." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/31019.
Full textArts, Faculty of
Psychology, Department of
Graduate
Torres, Cristian, and Cristian Torres@act gov au. "Early maladaptive schemas and cognitive distortions in psychopathy and narcissism." The Australian National University. Faculty of Science, 2003. http://thesis.anu.edu.au./public/adt-ANU20031107.130315.
Full textEverett, David C. Blashfield Roger K. "Antisocial personality disorder vs. psychopathy an analysis of the literature /." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Spring/master's/EVERETT_DAVID_59.pdf.
Full textRogstad, Jill E. "Female Psychopathy Predictors: Cluster B Traits and Alexithymia." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc283811/.
Full textRogstad, Jill E. "Psychopathy and Antisocial Personality Disorder: Gender Differences in Empathy and Alexithymia." Thesis, University of North Texas, 2011. https://digital.library.unt.edu/ark:/67531/metadc103384/.
Full textMurray, Ashley Anne. "The effects of psychopathy and Machiavellianism on cognitive dissonance." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.
Full textAuty, Katherine M. "Family factors and the intergenerational transmission of psychopathy, personality disorders & criminal offending." Thesis, Queen Mary, University of London, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612574.
Full textKiehl, Kent Anthony. "A neuroimaging investigation of affective, cognitive, and language functions in psychopathy." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ48667.pdf.
Full textLad, Reena. "Staff attitudes to personality disorder : the role of personality, emotion regulation, empathy and compassion." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/16448.
Full textParsons, Shaun. "The DSM cluster B personality disorders : validity of the concept and effects on primary care." Thesis, University of Newcastle Upon Tyne, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242356.
Full textKotler, Julie S. "Early correlates of psychopathy and relations between psychopathy, youth adjustment, and growth trajectories for externalizing behavior in samples of normative and high-risk youth /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/8996.
Full textSteadham, Jennifer A. "Psychopathic and Antisocial Personality Disorder Traits As Predictors of Reactive and Instrumental Aggression." Thesis, University of North Texas, 2012. https://digital.library.unt.edu/ark:/67531/metadc115167/.
Full textHilving, Rebecca. "Violent Female Offending: Examining the Role of Psychopathy and Comorbidity with DSM-IV Personality Disorders." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc30465/.
Full textGrann, Martin. "Personality disorder and violent criminality : a follow-up study with special reference to psychopathy and risk assessment /." Stockholm, 1998. http://diss.kib.ki.se/search/diss.se.cfm?19981016gran.
Full textRidings, Leigh Elizabeth. "Emotional Dysregulation and Borderline Personality Disorder: Explaining the Link Between Secondary Psychopathy and Alexithymia." University of Dayton / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1310672856.
Full textGregory, Amanda Louise. "Orbitofrontal cortex dysfunction in adolescent psychopathy neuropsychological function, violent behavior, and MRI volumetrics /." Access restricted to users with UT Austin EID Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3032405.
Full textSorg, Abberley E. "The Impact of Medicalization on Individuals Labeled with Antisocial Personality Disorder." University of Toledo / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1564670634916647.
Full textSalekin, Randall T. (Randall Todd). "An Investigation of Psychopathy in a Female Jail Sample: a Study of Convergent and Discriminant Validity." Thesis, University of North Texas, 1996. https://digital.library.unt.edu/ark:/67531/metadc277640/.
Full textCarlisle, J. R. "Using mentalizing and psychopathy to explore a dimensional model of antisocial and borderline personality disorder." Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1448713/.
Full textMark, Daniel. "Contribution of Psychopathic Traits in the Prediction of Generalized Prejudice in Males." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1404546/.
Full textSargeant, Marsha Nneka. "Biobehavioral mechanisms underlying emotionality in antisocial personality disorder and the role of psychopathic traits." College Park, Md.: University of Maryland, 2008. http://hdl.handle.net/1903/8723.
Full textThesis research directed by: Dept. of Psychology. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Ali, Afiya. "Recognition of facial affect in individuals scoring high and low in psychopathic personality characteristics." The University of Waikato, 2007. http://adt.waikato.ac.nz/public/adt-uow20070129.190938/index.html.
Full textOncul, Oznur. "Roles Of Basic Personality Traits, Schema Coping Responses, And Toxic Childhood Experiences On Antisocial, Borderline, And Psychopathic Personality Characteristics." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609775/index.pdf.
Full textBonogofsky, Amber Nicole. "Self-report measures of psychopathic and schizotypal personality characteristics a confirmatory factor analysis of characteristics of antisocial behavior and hypothetical psychosis-proneness in a college sample /." CONNECT TO THIS TITLE ONLINE, 2007. http://etd.lib.umt.edu/theses/available/etd-06012007-120950/.
Full textAndrade, Joel T. "Psychosocial Precursors of Psychopathy in a Psychiatric Sample: A Structural Equation Model Analysis." Thesis, Boston College, 2009. http://hdl.handle.net/2345/1387.
Full textPsychopathy has received a marked increase in attention in the research literature over the past 2 decades since the validation and standardization of assessment tools designed to measure this construct, particularly the Psychopathy Checklist-measures (Hare, 1991/2003; Hart, Cox, & Hare, 1995; and Forth, Kosson, & Hare, 2003). Psychopathy has been identified as the best single predictor of violence among adult offenders (Hart, 1998). Such findings have led some to conclude that "psychopathy is the most important psychological construct for policy and practice in the criminal justice system" (Harris, Skilling, & Rice, 2001). Despite the overwhelming evidence of substantial societal and individual costs attributable to this disorder, little is known about psychosocial precursors of psychopathy. This study examines risk factors related to the development of psychopathy, as measured by the PCL:SV, in a sample of 446 psychiatric patients using structural equation modeling (SEM). The final SEM includes five predictor variables measuring early-life physical abuse, paternal antisocial behavior, and cognitive ability. Severe physical abuse (β = 0.17, p = .043), biological father's alcohol abuse history (β = .16, p =.004), biological father's arrest history (β = 0.13, p = .02), and the subject's cognitive ability (β = -0.18, p < .001) were found predictive of psychopathy in this sample. Post hoc analyses comparing male and female subjects, and black and white subjects, indicate different causal pathways in the development of psychopathy among these groups. Future research designed to assess these potentially different causal pathways are recommended. Implications to clinical theory, practice, and policy are also discussed
Thesis (PhD) — Boston College, 2009
Submitted to: Boston College. Graduate School of Social Work
Discipline: Social Work
Hazelwood, Lisa L. "Gender differences in a prototypical analysis of psychopathy." Thesis, University of North Texas, 2006. https://digital.library.unt.edu/ark:/67531/metadc5371/.
Full textAbbass, Nagim Tony, and Jonas Molin. "Psychopaths in the media : Criminals, madmen or hidden among us?" Thesis, Hälsohögskolan, Högskolan i Jönköping, HHJ, Avd. för beteendevetenskap och socialt arbete, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-20568.
Full textNär samhället blir sett ur ett socialkonstruktionistiskt perspektiv, blir socialarbetaren lika påverkad som den övriga populationen av den bild som media förmedlar och framställer. En fördomsfull eller partisk socialarbetare kommer inte att uppnå den effektivitet i sin profession som syftet med yrket innebär. Syftet med denna uppsats är att undersöka eller upptäcka om det finns några synliga kulturella skillnader i bruket och beskrivningen av psykopati som begrepp eller psykopaten som person i media, mer specifikt dagstidningar. I den här studien ingår tre amerikanska dagstidningar och tre svenska dagstidningar. Studien är baserad på en kvantitativ innehållsanalys av artiklar publicerade mellan 1:a januari 2008 och 1:a juli 2012. Den insamlade data är kategoriserad där varje artikel kan falla under en eller flera av fem förekommande kategorier. Även om det inte går att utläsa några tydliga resultat, föreligger indikationer som kan vara av intresse mellan amerikanska dagstidningar och svenska dagstidningar, men dessa är tydligare mellan de olika amerikanska dagstidningarna. Psykopater, människor som har en antisocial personlighetsstörning, beskrivs mestadels som kriminella eller galningar/dårar i båda ländernas dagstidningar med en viss högre procentuell representation vad gäller USA.
Carter, Rachel Marjann. "Psychopathy in Male and Female Offenders: Validating the CAPP-IRS and Investigating the Impact of Gender Role Conformity." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1062832/.
Full textRoy, Sandeep. "Differential Associations between Psychopathy Factors and Shooter Bias in the Police Officer's Dilemma." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1248423/.
Full textParhi, K. (Katariina). "Born to be deviant:histories of the diagnosis of psychopathy in Finland." Doctoral thesis, Oulun yliopisto, 2018. http://urn.fi/urn:isbn:9789526219431.
Full textTiivistelmä Väitöskirja tarkastelee psykopatiadiagnoosin historian vaiheita Suomessa neljässä eri yhteydessä 1800-luvun loppupuolelta 1960-luvun loppuun. Lukuisista eri konteksteista, joissa diagnoosia on käytetty, tarkastellaan tarkemmin oikeuspsykiatrian alkutaivalta, lasten itsemurhien patologisointia, diagnoosin käyttöä toisen maailmansodan jälkeisessä Pohjois-Suomessa sosiaalisen kontrollin muotona, sekä Transvestitismus-alakategorian potilaita ja hoitoa. Yhteisiä nimittäjiä psykopatiadiagnoosin käytössä ovat olleet poikkeavuus, mielenterveyden ja mielisairauden välinen rajatila, interventio, pysyvyys, synnynnäisyys sekä epänormaalius, joka liittyy tunteisiin, vietteihin ja tahtoon. Väitöskirjassa tarkastellaan psykopatiadiagnoosin käytön taustoja, tapoja ja merkitystä osana suomalaisyhteiskunnan kehitystä kohti hyvinvointivaltiota ja korostetaan, että käsitteellisesti laajan diagnoosin historiaa tulisi tarkastella aina käyttökontekstin kautta, ei pelkkänä kaatoluokan historiana
Falkenbach, Diana M. "The subtypes of psychopathy and their relationship to hostile and instrumental aggression." [Tampa, Fla.] : University of South Florida, 2004. http://purl.fcla.edu/fcla/etd/SFE0000569.
Full textCruise, Keith R. "Measurement of Adolescent Psychopathy: Construct and Predictive Validity in Two Samples of Juvenile Offenders." Thesis, University of North Texas, 2000. https://digital.library.unt.edu/ark:/67531/metadc2648/.
Full textMorana, Hilda Clotilde Penteado. ""Identificação do ponto de corte para a escala PCL-R (Psychopathy Checklist Revised) em população forense brasileira: caracterização de dois subtipos de personalidade; transtorno global e parcial"." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/5/5142/tde-14022004-211709/.
Full textMORANA, HCP. Identifying the Brazilian PCL-R (Psychopathy Checklist Revised) cut-off score for forensic population : characterizing two personality subtypes; global personality disorder (GPD) and Partial personality disorder (PPD). São Paulo, 2003. 178p. Tese (Doutorado) Faculdade de Medicina, Universidade de São Paulo. In Brazil, there have been no standardized instruments in the legal and penal field so far that enable-identifying subjects who may relapse into crime, mainly those crimes of violent and cruel nature. The PCL-R, broadly used and institutionalized in several countries, fills such gap. The goal of the present study is to discriminate, through in-depth personality assessment, subjects considered psychopathic and non-psychopathic, correlated in this study to individuals specified as having global personality disorder (GPD) and partial personality disorder (PPD), respectively. The sample is composed of a random sample of 56 male subjects referred to as forensic population, these being: 33 subjects identified as GPD and 23 subjects identified as PPD. All 56 subjects have been assessed on the light of clinical data, judicial records, the Rorschach Test and the PCL-R. This population was compared to 30 subjects referred to as non-criminal population, and who have also been assessed via the same instruments as the sample. The personality of both forensic population groups fulfills ICD-10 criteria for antisocial personality disorder, but differences in terms of their psychic dynamics and personality determinants can be clearly identified, which impacts upon their social behavior in different ways. The accurate identification of such subjects presents multiple implications to the forensic and penitentiary system, and may contribute to reduce recidivism rates as well as violence levels in the country. Validation of the instrument (PCL-R) and identification of the cut-off score for the psychopathic condition (GPD in our notation), for the sample drawn from the Brazilian forensic population has been conducted through the concurrent analysis of both instruments of assessment, resulting in a 23 cut-off score (CI = 21.61 to 24,05). The average value is 28,63 (CI= 26,78 to 30, 48). Sensitivity outcome is 84,8%. Specificity is 100%. The reliability rates found for both instruments were high (Kappa = 0.8735).
Achá, Maria Fernanda Faria. "Funcionamento executivo e traços de psicopatia em jovens infratores." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/5/5142/tde-07122011-150839/.
Full textBackground: According to the literature, juvenile delinquency is a growing problem in many countries, which has increased researches with forensic population seeking for the etiology of antisocial behavior. In this context, neuropsychological evaluation is usually used as an important tool to investigate the correlation between conduct behavior and cognitive deficits. The present research compared executive functions between recidivist juvenile offenders and non-recidivist ones. Methods: 38 young offenders with 18 years old of average (±0,23) were divided in two groups: Group 1: Primary Offenders (n=17) and Group 2: Recidivist Offenders (n = 21), both evaluated through the following tools: Mini-International Neuropsychiatric Interview (MINI), Psychopathy Checklist Revised(PCL-R) and the neuropsychological tests: similarities, verbal fluency, Stroop Color Test, block design, vocabulary, digit span, Wisconsin Card Sorting Test (WCST), Trail Making Test (TMT) and intelligence coefficient estimated (IQ). Results: The groups were controlled regarding age and scholarship. The recidivist group (group 2) showed higher scores at the PCL-R (p = 0,05) corroborating the theory that psychopathic traits are higher in these offenders. The groups reveal no statistical difference in the following neuropsychological test: verbal fluency, TMT, Stroop, WCST, similarities and vocabulary. However, group 2 presented better ability in activities requiring perceptual organization (p< 0,01), and also had higher estimated IQ (p< 0,02). In the other hand, group 1 performed better in tasks related to auditory sequencing and short-term memory (p=0,04). Conclusion: The results indicate that neuropsychological variables alone are not sufficient to discriminate between recidivist and norecidivist young offenders
Lindblom, Sophia. "Objektrelationer hos livsstilskriminella män : En litteraturstudie." Thesis, Ersta Sköndal Bräcke högskola, S:t Lukas utbildningsinstitut, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:esh:diva-7158.
Full textIntroduction: In this literature study, the relationships between objectrelationships and antisocial personality disorder and psychopathy among criminalswas analysed. The aim is to increase the understanding of the unconsciousemotional processes of people with a criminal lifestyle. An increasedunderstanding is believed to contribute to better tailored interventions for thetarget group. Issues: What object relations are found in men with a criminal lifestyle? How cana greater understanding in the area contribute to better tailored interventions forthe target group? Methods: The studies have been included through database search and examinedthrough thematization. General and specific aspects of object relations wereidentified. Results: The result shows that the target group generally has a personalityorganization at borderline level. Specifically, egocentrism is the characteristicaspect. Interventions that have proved to be successful with other personalitydisorders within cluster B are believed to be useful to the target group. Discussion: Further research is needed to examine how egocentrism should behandled in the therapeutic situation. Psycho-educative elements aboutegocentrism are believed to help the client idealize this knowledge and turn it intoan interest in his own mental states.
Barros, Daniel Martins de. "Correlação entre grau de psicopatia, nível de julgamento moral e resposta psicofisiológica em jovens infratores." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/5/5142/tde-26052011-144316/.
Full textBackground: Psychopathy has always been associated with immoral behavior and callousness. Although the latter characteristic is well established for psychopaths, there is no consensus regarding the level of moral discernment of these individuals: some theories suggest that they lack appropriate moral development, whilst others, that they lack only the willing to act properly. Regarding the relationship of these three variables - psychopathy, immorality and callousness - data is even less consistent. Thus, it is important to investigate incarcerated offenders, since studies with such population allow one to control for variables that may confound this inter-relationship, such as environmental influences, criminal experience, psychopathy, drug use and IQ. The investigation of juvenile offenders has additional advantages, as they form a homogeneous sample regarding age. Objectives: To verify the correlation between level of moral judgment, callousness and psychopathy in juvenile offenders incarcerated in Fundação Casa. We also wished to verify the risk prediction of the Brazilian version of the Psychopathy Checklist Revised (PCL-R). We expected to find inverse correlations between PCL-R scores and electrodermal activity and moral judgment level. Regarding the last two variables, we expected that they should be independent from each other. Finally, we expected that primary offenders would be different from recidivist ones. Methods: Thirty incarcerated young offenders were evaluated regarding: a) the degree of psychopathy according with scores on the scale PCL-R, split between factor 1 (which reflects interpersonal relationships and coldness) and factor 2 (reflecting criminal lifestyle, antisocial behaviors), b) level of moral judgment level as assessed with the Socio-moral Objective Measure-Short Form (SROM-SF), c) emotional callousness as measured through psychophysiological responses (electrodermal activity EDA) to visual stimuli from the International Affective Pictures System (IAPS). Results: We found a direct relationship between factor 1 of the PCL-R and latency of EDA response (Spearman test, p<0,005), and between factor 2 and greater vagal control (Spearman test, p<0,005). No significant relationship was found between moral maturity and level of psychopathy or callousness (Spearman test, p>0,05). PCL-R scores were able to distinguish primary from recidivist offenders (t test, p=0,0006). Conclusions: As predicted, there was a significant correlation between psychopathy levels and callousness as measured through EDA. Moreover, we also confirmed the prediction that there would be no relationship between EDA and moral judgment. However, different from what we expected, psychopathy level did not show any significant relationship with moral judgment. Additionally, it was found that the Brazilian version of the PCL-R demonstrated consistency in predicting recidivism in the sample studied.
Forth, Adelle E. "Emotion and psychopathy: a three-component analysis." Thesis, 1992. http://hdl.handle.net/2429/1882.
Full textMoore, Joseph Tatum. "Investigation of the violence inhibition mechanism model of psychopathy in a non-institutionalized sample." 2003. http://hdl.handle.net/2152/12352.
Full textMoore, Joseph Tatum Holahan Charles J. Tucker David M. "Investigation of the violence inhibition mechanism model of psychopathy in a non-institutionalized sample." 2003. http://wwwlib.umi.com/cr/utexas/fullcit?p3122768.
Full textLabow, Melissa Amber. "The comorbidity of psychopathy, anxiety, and depression disorder." Thèse, 2013. http://hdl.handle.net/1866/11046.
Full textPsychopathy is a personality disorder characterized by behavioral traits that are often considered undesirable. These traits include callousness, lack of empathy, narcissism, and increased sense of self-worth. These characteristics of psychopathy manifest themselves in men and women alike, and within both criminal and noncriminal populations. The study of the relationship between psychopathy and other mental disorders is a relatively new area of research within the field of psychology. The present study attempted to expand this area of research, namely by examining the relationship between psychopathy, anxiety, and depression. Studies conducted on this relationship have thus far shown that both anxiety and depression disorder are significantly and negatively correlated with psychopathy. For the present study, a total of 92 currently enrolled or recently graduated undergraduate and graduate students were recruited for participation. The participants completed four standardized scales that assessed their level of psychopathy, anxiety, and depression disorder. Participants were assessed using the Levenson’s Self-Report Psychopathy scale, the Childhood and Adolescent Taxon Self-Report, the Beck Depression Inventory, and the Beck Anxiety Inventory. The results suggested that both anxiety and depression are positively and significantly correlated with psychopathy as well as with each other. Additional variables, such as gender and educational origins, were found to contribute significantly to the model. The discussion of the results of the present study includes the findings of previous, related research as well as the importance of psychopathic comorbidity analyses in future research.
Strachan, Catherine Elizabeth. "The assessment of psychopathy in female offenders." Thesis, 1993. http://hdl.handle.net/2429/6829.
Full textLouth, Shirley May. "Psychopathy, alexithymia and affect in female offenders." Thesis, 1994. http://hdl.handle.net/2429/5397.
Full textChiu, Hsien-liang, and 邱顯良. "The Study on Relationships Among Psychopathy, Antisocial Personality Disorder and Violent Crime." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/26527073386099090102.
Full text國立中正大學
犯罪防治所
95
Psychopathy as it is conceptualized among adults represents a distinct cluster of affective, interpersonal and behavioral characteristics. Cleckley(1976) described the prototypical psychopath as an individual who was superficially charming and intelligent, but who also was insincere, untruthful, egocentric, and lacking in remorse and shame. The purpose of the thesis was to investigate the characteristics of the psychopathy in the perpetrators. Four studies had been conducted in the research. In study 1, case study approach was used to explore the behavioral and affective disorder of the continual murder. Data were induced by procedures of the phenomenological analysis. Psychopaths selected from incarcerated offenders were divided into two classifications in study 2. Their domestic relations, school adaptation, social life adaptation, and crime faith were compared between “violent-psychopath” and “nonviolent-psychopath”. In study 3, in-depth interview and self-reported questionnaire were used to survey 71 offenders which divided into “psychopath” and “antisocial personality”. The two group samples were compared with their age, education, parents’ marriage, age of first offense, amounts of recidivism, and substance abuse. In addition, the factor structure of PCL-R was also discussed. In study 4, samples selected from substitute civilian servicemen were divided into different classifications. Their neuroticism, extroversion, impulsivity and aggression were also compared. Multiple regression analyses were used to ascertain the predictors of aggression. Results were as follows: 1. In study 1, the sample was appraised and confirmed a secondary psychopath. These traits of psychopathy were habitually represents by this sample, such as “manipulative”, “callous”, “lack of empathy”, and “lack of remorse or guilt”. 2. Comparing violent-psychopath with nonviolent-psychopath on domestic relations,…, etc. Results were as following: (1)The violent-psychopath is significantly higher in the ratio of the single-parent family. And, both of them lack suitable upbringing. (2)Both of the two groups are similar in the level of education. But, the deviant disposition of violent-psychopath was significantly higher in the school. (3)The violence-psychopath changed work frequently, and most of them had the ideas of earning money by illegal means. In addition, both of the two groups had the complex relations in sex. (4) The violent-psychopath is significantly higher in the ratio of the antisocial behavior in youth. And, the impulsivity of violent- psychopath was also significantly higher. 3. Comparing psychopath with antisocial personality on the records of offenses. Results were as follows: (1)Psychopath was significantly higher in the proportion of the recidivists and substance abuse. (2)The PCL-R has good internal consistency. Confirmatory factor analyses and coefficients of congruence showed that the factor structure in this sample resembled the research of Hare. (3)A direct discriminant function analysis was performed by using 20 traits of psychopathy as predictors of membership in different categories of offenders, respectively. Only “Conning/Manipulative”, “Callous/Lack of Empathy” and “Early Behavioral Problems” in those twenty discriminants can correctly classify (64.1%) samples into three groups. 4. In study 4, results were as follow: (1)Psychopath can be classified into the category of “neuroticism- extroversion”(Quadrant 1 of Eysenck’ theory). (2)A direct discriminant function analysis was performed by using 9 traits as predictors of membership in different categories of personality. Only “physical aggression” of those nine discriminants can correctly classify (53.8%) samples into three groups. (3)The predictive relation of aggression found by multiple regression analysis, only “neuroticism” can significantly explain about 28% to 51% of variance among aggression behaviors. The implications of the findings of this study about the relationships between psychopathy and violent crime are also discussed.