Insulin secretion during the glucose tolerance test among habitually violent and impulsive offenders

Male habitually violent and impulsive offenders were studied by means of the glucose tolerance tests (GTTs) and insulin measurements. Both in intermittent explosive disorder and in violent antisocial personality, there was a tendency for there to be reactive hypoglycemia. There was a more rapid decline of glucose from hyperglycemia and more rapid return from hypoglycemia to the original basal values in intermittent explosive disorder than in violent antisocial personality. Consistent with this, the enhanced insulin secretion started rapidly but lasted a short time in intermittent explosive disorder.     

Family of Origin Violence Predictors of IPV by Two Types of Male Offenders

The aim of this study was to determine the role of family of origin violence in predicting intimate partner violence (IPV). Male participants were divided into generally offending and family-only groups according to whether their violence occurred exclusively within intimate partner and family contexts or toward others outside the family as well. Results showed that exposure to family of origin violence affected IPV differently between the two groups of offenders. For generally offending offenders, exposure to family of origin violence significantly predicted IPV above and beyond demographic factors, alcohol and drug use, and bidirectional aggression. For family-only offenders, witnessing father-initiated violence toward the mother had a significant influence on their violent behavior toward their intimate partners. Clinical implications of these findings are addressed.     

Serum testosterone,cortisol, glucose,and ethanol in males arrested for spouse abuse

Concentrations of ethanol, testosterone, cortisol, and glucose were determined in serum obtained from 16 males taken into police custody after incidents of spouse abuse. The mean blood ethanol level at the time of arrest was 33.3 ± 2.6 mM. Serum testosterone levels were significantly lower and cortisol levels higher at the time of police intervention (within 1 hour of the incident) compared to control data collected later from the subjects when sober. Offenders did not differ from a group of nonviolent pub patrons at similar blood ethanol levels (35.9 ± 4.5 mM) with respect to serum testosterone, cortisol, or glucose, but their sober state cortisol and glucose concentrations were significantly higher compared to a control group of nonalcoholic men. Intoxication or acute hormonal changes were thus not specifically associated with violent behaviour. Provocative cues, however, may have been more frequent in the offender families, as Straus Conflict Tactics data showed that offenders and victims resorted to verbal aggression significantly more often than control families. The significantly elevated cortisol and glucose concentrations in offenders when sober compared to nonviolent controls could be viewed as direct effects of life stress, or as indirect effects of stress mediated by learned escape drinking. Excessive drinking as well as spouse abuse could be maladaptive coping strategies that principally serve to maintain the status quo, physiologically as well as psychologically. © 1992 Wiley-Liss, Inc.     

Brain damage,diagnosis, and substance abuse among violent offenders

Neuropsychological functioning, diagnoses, and substance abuse were compared among killers, nonhomicidal assaulters, and nonviolent offender controls. The Reitan and Luria-Nebraska Neuropsychological test batteries, the WAIS-R, CT scans, and EEGs were examined with a trend to more neuropathology found in killers and assaulters than in controls. There were no group differences in ICD-9 diagnosis nor on the MMPI, although considerable personality pathology was noted in all groups. Violent offenders scored higher on the Michigan Alcoholism Screening Test (MAST). The violent offenders were more likely to experience alcohol and drug-related mood dysphoria. The interaction of neuropsychological, personality, and substance abuse variables is discussed.     

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。     

Can sex offenders who minimize on the MMPI conceal psychopathology on the Rorschach?

Rorschach sensitivity to minimization is important in forensic evaluations of sex offenders because these individuals frequently deny psychological problems. To study Rorschach minimization, we divided alleged sex offenders according to whether they minimized on the MMPI (Hathaway & McKinley, 1943) or MMPI-2 (Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer, 1989) and compared their Rorschachs on indexes of distress, faulty judgment, interpersonal dysfunction, and cognitive distortions. We predicted there would be no differences between MMPI minimizers and nonminimizers on these indexes and that sex offenders of both groups would show greater psychopathology than normative adult samples. Results indicate that mini- mizers produce normal MMPI clinical profiles but still show evidence of psychopathology on the Rorschach. As predicted, sex offenders showed more Rorschach psychopathology than normative samples. Sex offenders' protocols that contained sexual content also showed perceptual distortions. These findings indicate that the Rorschach is resilient to attempts at faking good and may therefore provide valuable information in forensic settings where intentional distortion is common.     

Aggressive personality traits in the effects of violent imagery on unprovoked impulsive aggression

In a three-factor design varying the aggressive-behavior subtraits of physical aggression (low, high) and hostility (low, high) with exposure to film content (innocuous, violent imagery), respondents were exposed to film segments and thereafter engaged in a teaching task that involved the administration of noxious feedback for unproductive efforts by the learner. A display informed respondents of the intensity of delivered feedback. Instructions were to provide feedback as often as required and of intensities deemed appropriate. However, respondents were also told to refrain from using extremely high intensities, as these intensities would be hurtful to the learner. None of the three independent variables exerted appreciable influence on the frequency of use of recommended feedback. In contrast, the frequency of the use of the disallowed, hurtful feedback was markedly affected. Independent of exposure to film content, men scoring high on hostility used impulsive aggressive responses more frequently than men scoring low on that subtrait. Within the subtrait of physical aggression, however, the degree of trait manifestation proved inconsequential for impulsive aggression, but exposure to the violent film segment resulted in more frequent use of impulsive aggressive responses than exposure to the innocuous film segment.     

Reduced prefrontal and increased subcortical brain functioning assessed using positron emission tomography in predatory and affective murderers

There appear to be no brain imaging studies investigating which brain mechanisms subserve affective, impulsive violence versus planned, predatory violence. It was hypothesized that affectively violent offenders would have lower prefrontal activity, higher subcortical activity, and reduced prefrontal/subcortical ratios relative to controls, while predatory violent offenders would show relatively normal brain functioning. Glucose metabolism was assessed using positron emission tomography in 41 comparisons, 15 predatory murderers, and nine affective murderers in left and right hemisphere prefrontal (medial and lateral) and subcortical (amygdala, midbrain, hippocampus, and thalamus) regions. Affective murderers relative to comparisons had lower left and right prefrontal functioning, higher right hemisphere subcortical functioning, and lower right hemisphere prefrontal/subcortical ratios. In contrast, predatory murderers had prefrontal functioning that was more equivalent to comparisons, while also having excessively high right subcortical activity. Results support the hypothesis that emotional, unplanned impulsive murderers are less able to regulate and control aggressive impulses generated from subcortical structures due to deficient prefrontal regulation. It is hypothesized that excessive subcortical activity predisposes to aggressive behaviour, but that while predatory murderers have sufficiently good prefrontal functioning to regulate these aggressive impulses, the affective murderers lack such prefrontal control over emotion regulation. © 1998 John Wiley & Sons, Ltd.     

Intergenerational transmission of violent behavior in adolescent males

The purpose of this study was to examine the intergenerational influence of experiencing parental violence on the expression of violent behavior in adolescent males and to attempt to assess the importance of psychological mechanisms in this transmission. Sixty-five consecutive male admissions to a Young Offenders Unit and 25 male high school boys were administered the Minnesota Multiphasic Personality Inventory (MMPI), the Culture-Free-Self-Esteem Inventory, an intelligence test, and a violence questionnaire. Violent behavior in adolescence was found to be associated with experiencing paternal violence. This transmission was also found to be associated with higher levels of psychotic symptomatology. Violent behavior in adolescence was not found to be associated with maternal violence experienced or parental violence witnessed or with low self-esteem, externalizing defences, or internalizing defences. © 1992 Wiley-Liss, Inc.     

Linking adult psychopathy with childhood hyperactivity-impulsivity-attention problems and conduct problems through retrospective self-reports

The purpose of the present study was to test whether adult criminals with psychopathy diagnoses, more than those without, have histories of hyperactivity-impulsivity-attention problems (HIA) and conduct problems (CP). We compared psychopathic and nonpsychopathic violent criminal offenders on retrospective reports of conduct problems before the age of 15 and hyperactivity-impulsivity-attention problems before the age of 10. We used a sample of 186 adult men sentenced to prison in Sweden for 4 years or more for violent, nonsexual crimes. The mean age was 30.7( SD = 9.4). The results showed that a combination of childhood HIA problems and CP was typical for adult psychopathic offenders. They were four times more likely than chance to have had a combination of HIA problems and CP during childhood and only one-fifth as likely than chance to have had neither problem. Nonpsychopathic offenders, on the other hand, were five times more likely than chance to have had neither problem and only one-quarter as likely than chance to have had both problems.     

A longitudinal examination of the relation between co‐offending with violent accomplices and violent crime

Although the idea that youthful offenders are affected by the company they keep is widely accepted, evidence in support of this idea is based primarily on reports provided by offenders and their peers. As an alternative to relying on reports of criminal behavior, a method that may overestimate the role that peers play in criminal behavior, the current research on co‐offending uses court records to identify and track over time individuals who are known to commit crimes together. The present investigation is the first co‐offending study to track patterns of violent criminal behavior (over an 18‐year period) among a sample of urban offenders and their accomplices. The study tests whether violence “spreads” from violent offenders to those inexperienced in violence. Results indicate that nonviolent offenders who commit their first co‐offense with violent accomplices are at increased risk for subsequent serious violent crime. Findings suggest that lessons of violence can be learned “on the street,” where knowledge is passed along through impromptu social contexts, including those in which offenders commit crimes together. Aggr. Behav. 28:97–108, 2002. © 2002 Wiley‐Liss, Inc.     

Adversary effects and the tactics of violent offenders

We examine the implication of adversary effects for target choice, lethal intent, and the use of weapons and allies in violent incidents. Adversary effects refer to the tendency of offenders to make tactical decisions based on the coercive power of victims and potential victims. Using the victim's gender as a proxy for coercive power, we analyzed violent incidents from the National Incident‐Based Reporting System (2005–2014). The sample included over six million assaults, robberies, and homicides. Consistent with adversary effects, offenders who attack males (vs. females) are more likely to (a) kill victims; (b) use guns, knives, blunt objects, poison, and automobiles; (c) use male (but not female) allies; and (d) use multiple allies. The evidence for target choice is mixed: unarmed female offenders, but not unarmed male offenders, are more likely to target females than males. The evidence shows how a simple theoretical principle can parsimoniously account for basic patterns of violence in society related to gender, weapons, and group violence.     

Veränderungen kriminogener Faktoren bei Sexual- und Gewaltstraftätern in Sozialtherapie und Regelvollzug

In the evaluation of offender treatment programmes, recidivism is still the most common measure of success. However, positive effects concerning future delinquent behaviour do not prove that treatment led to changes in the targeted criminogenic risk factors. Furthermore, little is known about whether such changes differ among the various offender types. This study investigated changes in self-reported criminogenic personality patterns and cognitions in a sample of treated and untreated sexual and violent offenders. Specific prosocial changes in treatment targets, such as self-control, excitability and neuroticism were found but similar improvements were also found in untreated offenders. In addition, changes in measured risk factors did not differ between offender types, although self-control, aggressiveness and neuroticism showed significant interactions between offence type and treatment delivery. Whereas treated violent offenders exhibited more positive changes than untreated violent offenders, an inverse pattern was observed in the case of sex offenders. Minor specific treatment effects as well as the limitations of the administered psychometric instruments are discussed as possible explanations for these results.     

Three methods of developing MMPI taxonomies of sexual offenders

In a sample of 261 state hospital sexual offenders, Minnesota Multiphasic Personality Inventory (MMPI) profiles did not differ for offenders with adult victims versus offenders with child victims when offender age was controlled. MMPI 2-point analyses for the whole sample revealed five common codes that were independent of victim maturity. The sample was randomly divided in half and subjected to a cluster-analytic procedure which revealed two MMPI clusters. The first cluster was unelevated, with Scale 4 as its high point. The second cluster had multiple elevations, with Scales 8, 4, 2, and 7 as the highest scales. These clusters were replicated in a cluster analysis of the second half of the sample. However, when the sample was recombined, the two clusters were not externally validated basis on demographic and criminological variables. The results suggest that common psychological variables among sexual offenders may have more discriminative value than victim maturity in developing sexual offender taxonomies.     

Substance use/abuse as a predictor to illegal and violent behavior: A review of the relevant literature

The preponderance of the research evidence supports the conclusion that abuse of certain types of illicit drugs, separately from the abuse of alcohol, predisposes to subsequent violent behavior. The relationship of cocaine/crack to violent crime has been established more clearly for users of crack in inner city areas than it has for those who are users of other forms of cocaine in the general population.In regard to any race/ethnic or socioeconomic factors in the relationships between substance use/abuse and violent behavior, most clearly established is that a higher proportion of young Black males, compared to other race/ethnic groups, are actively involved in dealing cocaine/crack in some inner city poverty areas.As for gender differences, the research evidence indicates that alcohol abuse as a predictor to and a precipitant of violent behavior, is more clearly established for males than for females. Drug abuse, as distinct from alcohol abuse, has been found to predict subsequent violent behavior, for females as well as for males. “Co-morbidity,” the combination of substance use with and psychopathology, appears more likely to predict for females to later violent behavior. Psychopathology and mental health problems are less likely to predict occurrence of either violent or criminal behavior in the future than are either alcohol abuse or drug abuse.     

Interpersonal violence and its relationship to some personality measures

One hundred and fifteen patients in a psychiatric hospital for criminal offenders volunteered to be tested with the overcontrolled hostility scale, the self focus sentence completion, and an emotional empathy measure. The subjects were divided into five groups on the basis of criminal offenses (murder, assault with a deadly weapon, rape, pedophilia, and nonviolent property offenses). It was also possible to divide the sample on the basis of diagnostic features (psychosis, personality disorder, and brain syndrome). The results failed to support the hypothesis that more violent (by nature of their offense) individuals would-as a group-score higher on the overcontrolled hostility scale than less aggressive counterparts. There was some evidence that psychotics showed more self focus at the expense of external focus. The empathy measure failed to reveal any meaningful differences. It is suggested that more validation data are called for to establish the generality of the overcontrolled hostility scale and that, in view of the therapeutic importance which empathy training may have for violent individuals, further effort should be expanded to find a generally valid empathy measure.     

Substance use/abuse as a predictor to illegal and violent behavior: A review of the relevant literature

The preponderance of the research evidence supports the conclusion that abuse of certain types of illicit drugs, separately from the abuse of alcohol, predisposes to subsequent violent behavior. The relationship of cocaine/crack to violent crime has been established more clearly for users of crack in inner city areas than it has for those who are users of other forms of cocaine in the general population.In regard to any race/ethnic or socioeconomic factors in the relationships between substance use/abuse and violent behavior, most clearly established is that a higher proportion of young Black males, compared to other race/ethnic groups, are actively involved in dealing cocaine/crack in some inner city poverty areas.As for gender differences, the research evidence indicates that alcohol abuse as a predictor to and a precipitant of violent behavior, is more clearly established for males than for females. Drug abuse, as distinct from alcohol abuse, has been found to predict subsequent violent behavior, for females as well as for males. “Co-morbidity,” the combination of substance use with and psychopathology, appears more likely to predict for females to later violent behavior. Psychopathology and mental health problems are less likely to predict occurrence of either violent or criminal behavior in the future than are either alcohol abuse or drug abuse.     

Differenzielle Effekte klassischer Prädiktoren von Jugendgewalt

Previous studies were able to identify numerous predictors of aggressive and violent behavior in youth. Although it is to be expected that these predictors may behave differently with varying personal and situation-specific characteristics, no study has yet empirically examined whether predictors of youth violence really exhibit differential effects. The current study will fill this gap in the literature by asking how do some predictors of youth violence differ between slightly and highly criminal individuals? To answer this question a representative sample of German students of the ninth class from 2007 and 2008 was used (N?=?44,610). Using the technique of quantile regression the effects of the predictors sex, origin, risk seeking, number of delinquent friends, alcohol consumption, parental violence, interparental violence and violent victimization on the number of violent incidents were analyzed. The results showed that all predictors significantly influenced the number of violent incidents; however, the effects of all predictors also varied significantly with the intensity of criminal activity of offenders. Whereas all predictors were valid for highly criminal individuals, only some predictors also influenced the amount of violent crime in occasionally violent youth. These results have important implications regarding the identification of new predictors, theory building and practice. Additionally, the present approach of studying differential effects might prove useful to psychology and law in general. The more empirical research is individualized, the better this research can also be applied in practice.     

Children Who Murder: A Review

Despite considerable research on juvenile homicide, pre-adolescent homicide offenders have received less attention. This paper reviews the existing literature on preteen murderers in order to characterize the current state of research knowledge about this population, and draws on some of the work on adolescent homicide as well. The analysis of this literature considers historical context, methodological issues, previous attempts to classify youthful homicide offenders, and predictors of preteen homicidal behavior. While there is a high degree of heterogeneity within this population, several developmental similarities emerged across cases that were associated with the perpetration of homicide by preteens. A high percentage of preteen homicide offenders come from homes characterized by physical abuse, domestic violence, poor or absent parenting, and overall instability. Gun availability may have been a facilitating factor. Support for different etiologies of preteen versus adolescent homicide is weak. Recommendations for future research directions are offered.