罪犯精神病态的初步探索

以中国罪犯为被试,对Hare精神病态量表进行修订,并在此基础上进一步探讨罪犯精神病态的影响因素。研究结果表明:(1)修订的Hare精神病态量表具有良好的信度和效度;(2)年龄、文化程度、婚姻状况和犯罪次数是影响罪犯精神病态得分的重要因素。20-29岁年龄组罪犯精神病态的得分显著高于30-38岁年龄组;文化程度高的罪犯精神病态的得分显著低于文化程度低的罪犯,大专以上文化程度的罪犯精神病态得分最低;未婚罪犯精神病态的得分显著高于已婚和离异的罪犯;累犯精神病态的得分显著高于初犯。     

基于三元精神病态模型的精神病态认知-情感加工框架

精神病态作为暴力犯罪、累犯和青少年犯罪的重要预测变量, 在临床心理学和司法领域受到了广泛重视。三元精神病态模型通过大胆、卑劣和去抑制三个维度对精神病态进行了操作化定义, 反映了精神病态在神经生物学维度上存在的认知情感加工缺陷。其中, 低威胁敏感性是精神病态大胆的主要病因学基础; 而执行功能受损, 尤其是注意调节缺陷则导致了精神病态的去抑制倾向; 而与情绪识别存在联系的共情缺陷可能是卑劣的深层原因。未来研究中仍需关注精神病态的概念化问题, 以及不同精神病态特质之间是否存在共同的潜在病因学基础, 探索精神病态特质在生命早期阶段的体现从而进行及时有效的干预。     

精神病态的家庭风险因素

精神病态(psychopathy)是一种个体表现在人际关系、情感、生活方式和反社会特征等方面的人格障碍, 其特征为自我中心、欺骗、冲动、缺乏共情、缺乏罪恶感等。以往研究偏向于精神病态的生理机制, 认为精神病态具有高度的遗传性, 近期越来越多的研究发现家庭因素对精神病态的重要影响。这些因素包括：产前风险因素、破碎家庭、不良的教养方式、不安全的亲子依恋关系和童年期虐待等。未来的研究应探讨家庭因素对各个精神病态亚型的作用机制, 探索抑制精神病态表达的保护性环境因子, 并构建精神病态的生物心理社会模型等。     

发展性阅读障碍书写加工缺陷及其神经机制

发展性阅读障碍是学习障碍的主要类型之一, 严重影响个体认知、情感与社会适应性的发展。书写与阅读关系密切, 阅读障碍者常常表现出书写加工缺陷。在行为层面, 阅读障碍者书写缺陷表现在书写质量差、速度慢和停顿多等多个方面。在脑机制层面, 脑成像研究发现, 阅读障碍者书写加工缺陷与字形加工脑区活动, 以及字形与运动区脑功能与结构连接异常有关。总体而言, 阅读障碍者书写过程中的字形通达缺陷的证据比较充分, 但字形与运动编码的衔接以及运动执行是否存在困难, 尚缺乏研究证据。相对于字母语言, 书写与阅读的关系在汉语中更为紧密, 汉语阅读障碍的书写研究将为开发汉语特色的诊治方案提供重要指导。     

精神病态暴力犯执行功能的缺陷*

为了解精神病态罪犯可能存在的执行功能缺陷及其是否受冲动性影响,研究采用精神病态检核表（PCL-R）筛选出30名精神病态组被试和30名非精神病态组被试,通过爱荷华赌博任务（IGT）和河内塔任务（TOH）对两组被试执行功能的特点进行分析,并结合冲动性量表（BIS-11）对其冲动性进行测量。研究发现精神病态组的冲动性显著高于控制组;精神病态组选择高风险的不利牌显著多于对照组,即对惩罚不敏感;精神病态组在河内塔任务中的错误次数及所消耗时间都显著高于控制组;冲动性水平与两任务得分均无显著相关。结果表明,精神病态暴力犯在与前额叶相关的执行功能上存在缺陷,并与个体的高冲动性无关。     

发展性阅读障碍的听觉时间加工缺陷

发展性阅读障碍是指个体在智力正常并且不缺乏学校教育的情况下, 仍无法获得与年龄相匹配的阅读技能的一种学习障碍, 其缺陷的本质一直是研究者争论的焦点。大量研究显示, 阅读障碍者常表现出听觉时间加工损伤。在行为层面, 阅读障碍者难以辨别快速、连续呈现刺激的顺序以及刺激本身的动态时间特征。在神经层面, 阅读障碍者诱发的失匹配负波更弱且具有异常的神经同步加工。这些损伤同时存在于对言语和非言语刺激的加工中, 表明听觉时间加工缺陷非言语加工所特有。未来的研究还需阐明以下几个问题：1)阅读障碍的听觉时间加工缺陷发生在哪些时间窗口, 随年龄增长如何变化; 2)阅读障碍听觉时间加工缺陷在神经层面的时间进程是怎样的; 3)听觉时间加工缺陷是否为阅读障碍的核心缺陷。     

冷酷无情特质：一种易于暴力犯罪的人格倾向

冷酷无情特质(callous unemotional trait, CU)是指对他人冷漠、缺乏罪责感、低共情的一种人格倾向, 伴随有高频率和高破坏性的反社会行为甚至暴力犯罪。CU特质者在情感上表现为对负性情绪加工不敏感, 缺乏共情; 在认知上表现出追求奖赏、忽视惩罚; 在生物学方面, CU特质者生理唤醒水平低、皮质醇水平低、杏仁核和腹内侧前额叶活动异常。未来研究的方向是修订发展本土化CU特质量表、探析CU特质者的性别差异、梳理CU与品行障碍等其他精神障碍的关系、为暴力犯循证矫正的方案设计提供科学依据。     

情感性动机网络使用者对负性情绪线索的前注意偏向

采用修改后的分离式Stroop任务,通过两个实验考察了基于人际情感性动机的网络使用者在双线索竞争条件下的前注意加工特性。研究结果表明,相对于信息获取型被试,在中性线索与负性情绪线索匹配条件下,人际情感型被试对负性情绪线索表现出显著的前注意加工偏向,但在中性线索和情感满足线索匹配条件下,该类被试对情感满足线索未表现出前注意加工偏向。该研究为解释人际情感型动机者的病理性网络使用行为的情绪机制提供了实验证据。     

物质成瘾人群金钱奖赏加工的异常机制及可恢复性

长期的成瘾物质使用造成奖赏系统的变化是成瘾过程发展和维持的关键, 这种病理性变化反过来会对奖赏系统的调节功能产生不利的影响, 引起认知表现和日常功能方面的障碍。近年来大量的功能性核磁共振成像研究表明物质成瘾人群的金钱奖赏加工相关的腹侧纹状体及其它奖赏脑区激活存在异常。而奖赏加工相关的纹状体激活可以作为治疗效果的预测器和临床恢复的指标; 这种奖赏加工异常可以通过戒断有所恢复。今后的研究需要进一步补充奖赏加工的事件相关电位研究, 研究物质成瘾人群奖赏加工的特异性, 并增加对家庭物质依赖史个体的奖赏加工研究, 以及奖赏与执行功能的交互作用机制的研究。     

不同类型罪犯在爱荷华赌博任务中的决策功能缺陷

采用爱荷华赌博任务(Behcara等人1994年版本)测量了8类共222名在监男性罪犯以及32名普通男性的决策功能, 并运用前景效用学习模型分析了不同类型罪犯在情感决策中的心理功能缺陷。罪犯组选择牌1的比例与控制组没有显著差异, 选择牌2的比例显著高于控制组, 选择牌3和牌4的比例显著低于控制组。暴力犯和涉黑犯对收益和损失都不敏感, 对过去的预期效用折扣很快; 吸毒犯(已戒除)、涉毒犯、盗窃犯和抢劫犯对奖赏加工正常, 对惩罚不敏感; 经济犯选择一致性最低; 性罪犯选择一致性最高。结果表明不同类型罪犯在爱荷华赌博任务中都具有决策功能缺陷, 但他们的决策功能缺陷由不同的心理功能缺陷所致。     

The characteristics of non-criminals with high psychopathy traits: Are they similar to criminal psychopaths?

This study compared the findings from a sample of non-criminals with high and low psychopathy levels to published findings with criminal psychopaths and non-psychopaths. Congruent to findings with criminal psychopaths, participants with high psychopathy traits (High-P) compared to those with low psychopathy traits (Low-P) performed significantly worse on the Iowa Gambling Task, a task sensitive to orbital frontal cortex dysfunction. Moreover, the High-P group also evidenced a lack of empathy, a hallmark feature of psychopathy. These findings could not be explained by differences in estimated IQ or performance on a task sensitive to an executive functioning deficit. The discussion focuses on possible differences between non-criminal and criminal psychopaths, concluding criminal psychopaths manifest more extreme degrees of the interpersonal-affective and antisocial features of psychopathy.     

Recognition of facial expressions of emotions in criminal and non-criminal psychopaths: Valence-specific hypothesis

IntroductionPsychopaths with the dominant reduced interpersonal and affective ability are characterized by the hypofunction of the right hemisphere, while psychopaths with the dominant impulsivity and antisocial behavior are characterized by the hyperfunction of the left hemisphere. The assumption is that this interhemispheric imbalance in a psychopath will also be reflected in the recognition of facial emotional expressions.ObjectiveThe objective is to examine the lateralization of facial expressions of positive and negative emotions as well as processing of facial expressions of emotions in criminal and non-criminal psychopaths.Participants48 male participants age 24–40 were voluntarily recruited from the psychiatric hospital in Nis, Serbia.Stimuli48 black-and-white photographs in two separate tasks were used for the stimulation with central and lateral exposition.ResultsCriminality is related to the reduced recognition of facial expression of surprise and not necessarily to psychopathy, whereas reduced recognition of facial expression of fear is related to psychopathy, but not criminality. Valence-specific hypothesis has not been confirmed for positive and negative emotions in criminal and non-criminal psychopaths and non-psychopaths, but it was shown that positive emotions are equally well processed in both hemispheres, whereas negative emotions are more successfully processed in the left hemisphere.     

Neuroaffective processing in criminal psychopaths: brain event-related potentials reveal task-specific anomalies

This study aimed to confirm neuroaffective processing deficits in psychopaths by measuring late brain event-related potential (ERP) components and behavior in groups of psychopathic and nonpsychopathic inmates of a Singaporean prison while they performed two tasks. In a Categorization task, affective stimuli were task-relevant and required focused attention, while in a Vigilance task, affective pictures were presented in the background while participants discriminated vertical from oblique lines. Psychopaths showed differences in late positive ERPs that were sensitive to affective stimulus properties (valence and arousal) in the Categorization, but not in the Vigilance task, suggesting that only under conditions of focused attention did psychopaths show a neuroaffective processing deficit. In the Categorization task, psychopaths also showed a significantly larger prefrontal negative ERP (N350) whose amplitude correlated positively with the behavioral facet of psychopathy. In the Vigilance task, psychopaths both missed more targets and showed significantly smaller target-evoked parietal ERPs when viewing arousing pictures, suggesting their attentional focus was disrupted by the affective background.     

In cold blood: characteristics of criminal homicides as a function of psychopathy

This study investigated the relationship between psychopathy and the characteristics of criminal homicides committed by a sample of 125 Canadian offenders. It was hypothesized that the homicides committed by psychopathic offenders would be more likely to be primarily instrumental (i.e., associated with premeditation, motivated by an external goal, and not preceded by a potent affective reaction) or "cold-blooded" in nature, whereas homicides committed by nonpsychopaths often would be "crimes of passion" associated with a high level of impulsivity/reactivity and emotionality. The results confirmed these predictions; homicides committed by psychopathic offenders were significantly more instrumental than homicides by nonpsychopaths. Nearly all (93.3%) of the homicides by psychopaths were primarily instrumental in nature compared with 48.4% of the homicides by nonpsychopaths.     

Two subtypes of psychopathic violent offenders that parallel primary and secondary variants

Although psychopathy usually is treated as a unitary construct, a seminal theory posits that there are 2 variants: Primary psychopathy is underpinned by an inherited affective deficit, whereas secondary psychopathy reflects an acquired affective disturbance. The authors investigated whether psychopathy phenotypically may be disaggregated into such types in a sample of 367 prison inmates convicted of violent crimes. Model-based cluster analysis of the Revised Psychopathy Checklist (PCL-R; R. D. Hare, 2003) and trait anxiety scores in the psychopathic subgroup (n = 123; PCL-R > or = 29) revealed 2 clusters. Relative to primary psychopaths, secondary psychopaths had greater trait anxiety, fewer psychopathic traits, and comparable levels of antisocial behavior. Across validation variables, secondary psychopaths manifested more borderline personality features, poorer interpersonal functioning (e.g., irritability, withdrawal, poor assertiveness), and more symptoms of major mental disorder than primary psychopaths. When compared with the nonpsychopathic subgroup (n = 243), the 2 psychopathic variants manifested a theoretically coherent pattern of differences. Implications for etiological research and violence prevention are discussed.     

Identification of the psychopathic batterer: The clinical,legal, and policy implications

A number of theoretical and empirical sources have proposed that a subgroup of domestically violent men exhibit more antisocial behavior, express more generalized violence, and are generally more resistant to mental health intervention than others. In a parallel literature, researchers have identified a subgroup of violent criminal offenders (i.e., psychopaths) that exhibit a number of similar characteristics to this more antisocial/generally violent group of batterers. Moreover, the offender literature on psychopathy describes the violence tendencies, physiological responses, cognitive impairments, interpersonal/affective characteristics, and treatment responsiveness of these individuals in much greater depth and breadth than the current domestic violence literature. The present article seeks to compare and contrast these two literatures, proposing that there is a subgroup of batterers that can be characterized as exhibiting significant psychopathic characteristics. The clinical, legal, and policy implications of identifying a subgroup of batterers in this manner also are explored.     

The Relation of Psychopathic Characteristics and Anxiety in Noncriminals: Physiological and Cognitive Responses to Guided Imagery

In response to a paucity of research examining the phenomenology of psychopathy among nonforensic samples, the present study explored the relations among psychopathic traits, self-reported anxiety, and physiological reactivity to experimental stimuli. Undergraduate students with no history of criminal behavior listened to four audiotaped vignettes designed to elicit affective responses. Imagery and anxiety ratings, as well as physiological indices supported the utility of the experimental manipulation. Consistent with data obtained among forensic samples, participants with greater psychopathic characteristics exhibited electrodermal hyporeactivity in response to guided imagery. However, inconsistent with previous findings, hyporeactivity was primarily related to high emotional detachment rather than elevated levels of deviant behavior. Results also suggested certain psychopathic qualities (emotional detachment) may be more associated with somatic and trait anxiety than other characteristics (deviant behavior), although anxiety did not moderate the effects of psychopathic characteristics on physiological responding. Theoretical implications are addressed, including the possible generalizability of psychophysiological models of diagnosed psychopaths to individuals with more benign psychopathic characteristics.     

The childhood experiences of psychopaths: a retrospective study of familial and societal factors.

We compared the childhood experiences of criminal psychopaths with those of criminal nonpsychopaths, to examine whether differences in either the type or intensity of adverse experience in childhood could be identified. One hundred and five prisoners, 50 psychopaths, and 55 nonpsychopaths were assessed with the Psychopathy Checklist-Revised (PCL-R) and Childhood Experience of Care and Abuse (CECA) semistructured interviews. Both assessment measures have been demonstrated to be reliable and valid instruments. File information from both adult and child services provided corroborative material. Factor analysis of the childhood experience variables revealed two distinct factors, familial and societal, both of which were highly correlated with adult psychopathy scores. These findings suggest that the experiences psychopaths have in childhood influence adult outcome.     

Psychopathy increases perceived moral permissibility of accidents

Psychopaths are notorious for their antisocial and immoral behavior, yet experimental studies have typically failed to identify deficits in their capacities for explicit moral judgment. We tested 20 criminal psychopaths and 25 criminal nonpsychopaths on a moral judgment task featuring hypothetical scenarios that systematically varied an actor's intention and the action's outcome. Participants were instructed to evaluate four classes of actions: accidental harms, attempted harms, intentional harms, and neutral acts. Psychopaths showed a selective difference, compared with nonpsychopaths, in judging accidents, where one person harmed another unintentionally. Specifically, psychopaths judged these actions to be more morally permissible. We suggest that this pattern reflects psychopaths' failure to appreciate the emotional aspect of the victim's experience of harm. These findings provide direct evidence of abnormal moral judgment in psychopathy.     

Empirical clusters of DSM-III personality disorders in violent offenders

Violent male offenders in a maximum security hospital and special units in prisons (N = 164) were interviewed with the Structured Clinical Interview for DSM-III Axis II disorders (SCID-II). Cluster analysis of the personality disorder criteria sets identified six diagnostic patterns: (1) antisocial-narcissistic; (2) paranoid-antisocial; (3) borderline-antisocial-passive-aggressive; (4) borderline; (5) compulsive-borderline; and (6) schizoid. Offenders in the first three groups had more extensive criminal careers, and most were identified as psychopaths by the Psychopathy Checklist-Revised (PCL-R). These Groups also had more frequent lifetime histories of substance abuse. A history of affective and anxiety disorders was more common in Groups 3 and 5, and almost two thirds of Group 2 had a history of psychotic disorder. The results emphasize that dangerous offenders are heterogeneous in personality pathology. They also suggest that personality disorder among violent offenders is more commonly represented by recurring patterns of covarying traits than by single categorical entities proposed in the DSM classification.