Moderating effects of childhood maltreatment on associations between social information processing and adult aggression

Pathways to antisocial behavior: a framework to improve diagnostics and tailor therapeutic interventions

The Antisocial Personality Disorder (ASPD), and antisocial behavior (ASB) in general, is associated with significant impact on individuals themselves, their environment, and society. Although various interventions show promising results, no evidence-based treatments are available for individuals with ASPD. Therefore, making informed choices about which treatment can be applied to an individual patient is complicated. Furthermore, contradictory findings on therapy effectiveness and underlying factors of ASB, such as cognitive impairments and personality traits, fuel the debate whether the conceptualization of ASPD in the DSM-5 is accurate and whether this population can be seen as homogeneous. A conceptual framework, based on the reciprocal altruism theory, is presented in which we propose different pathways to ASB. These pathways suggest underlying dynamics of ASB and provide an explanation for previous contradictory research outcomes. This framework is intended to serve as a clinically relevant model that provides directions for improving diagnostics and matching treatments to underlying dynamics in the antisocial population.

Daily Reports of Aggressive Behaviors in Interpersonal Conflicts

Interpersonal conflicts are inevitable, but the probability that conflicts involve aggressive behavior varies. Prior research that has tended to focus on victimization in intimate partnerships reported through retrospective designs. Addressing these limitations, the current study examines daily reports of behaving aggressively in any conflict across relationships in a sample of 512 young adults drawn from the nationally representative iCOR cohort. Respondent attitudes and affective measures were collected at the end of the daily data collection period. Regression methods were applied to examine the probability and frequency of aggression, investigating early and recent exposure to adversities, attitudes, self-control, affect and emotional states, and alcohol use behavior. Recent adversities and the propensity to endorse a defensive honor code attitude, consistent with theory and retrospective studies of aggression, predicted both prevalence and frequency of aggressive behavior. The associations of childhood maltreatment and self-control with the prevalence of behaving aggressively were as expected, but these constructs were significantly associated with the frequency of aggression with unexpected, inverse directionality. Moreover, respondents' affect and other emotional states were only associated with the frequency, not the prevalence, of aggressive behavior. Overall, this daily data collection constructively distinguished risk and protective factors for behaving aggressively more often. Further research is needed to disentangle the extent to which affective states drive or is a consequence of frequent aggressive behavior.

Childhood Maltreatment and Use of Aggression among Veterans with Co-occurring PTSD and Alcohol Use Disorder: The Mediating Role of Hostile Cognitions

History of childhood maltreatment is common among military veterans, particularly those with posttraumatic stress disorder (PTSD) and alcohol use disorder (AUD). Childhood maltreatment is associated with negative psychosocial outcomes, including use of aggression during adulthood. Prior research has identified maladaptive cognitions as a key mediating variable in the association between early life trauma and aggression. Given the high rates of comorbid PTSD and AUD among veterans and the increased risk of aggression when these conditions co-occur, it is critical to examine malleable intervention targets, such as maladaptive cognitions, for this population. The current secondary analyses examined the mediating role of hostile cognitions on the associations between childhood maltreatment and adulthood aggression in a sample of dually diagnosed veterans. Participants were veterans with co-occurring PTSD and AUD (N = 73) who were enrolled in a larger randomized controlled laboratory trial. Participants completed self-report measures of childhood maltreatment, hostile cognitions, and aggressive behavior. Three models were tested to examine the mediating effect of hostility on the associations between childhood maltreatment, abuse, and neglect on aggression. Results indicated that hostility fully mediated the effect of maltreatment on aggression and partially mediated the effect of childhood abuse on aggression. The effect of childhood neglect on aggression was nonsignificant. Hostile cognitions may be a critical intervention target for veterans with co-occurring PTSD and AUD and history of childhood maltreatment, particularly for those who have experienced higher levels of childhood abuse.

Gender Moderates the Association Between Exposure to Interpersonal Violence and Intermittent Explosive Disorder Diagnosis

Exposure to interpersonal violence (EIV) is a prevalent risk-factor for aggressive behavior; however, it is unclear whether the effect of EIV on clinically significant aggressive behavior is similar across gender. We examined whether gender moderates the association between experiencing and witnessing interpersonal violence and the diagnosis of intermittent explosive disorder (IED). We also examined potential pathways that might differentially account for the association between EIV and IED in men and women, including emotion regulation and social information processing (SIP). Adult men and women (N = 582), who completed a semistructured clinical interview for syndromal and personality disorders, were classified as healthy controls (HC; n = 118), psychiatric controls (PC; n = 146) or participants with an IED diagnosis (n = 318). Participants also completed the life history of experienced aggression (LHEA) and life history of witnessed aggression (Lhwa) structured interview and self-report measures of emotion regulation and SIP. Men reported more EIV over the lifetime. In multiple logistic regression analysis, experiencing and witnessing aggression within the family and experiencing aggression outside the family were associated with lifetime IED diagnosis. We found that the relationship between EIV and IED was stronger in women than in men. Affective dysregulation mediated certain forms of EIV, and this relation was observed in both men and women. SIP biases did not mediate the relation between EIV and IED. EIV across the lifespan is a robust risk factor for recurrent, clinically significant aggressive behavior (i.e., IED). However, the relationship between EIV and IED appears to be stronger in women. Further, this relation appears partially mediated by affective dysregulation.

Children's emotion recognition and aggression: A multi-cohort longitudinal study

Difficulty recognizing negative emotions (NEs) in children is linked to increased antisocial traits and externalizing problems. However, crucial aspects of this relation remain unclear, such as: whether NE recognition is associated with externalizing problems in general or only a particular subcomponent (i.e., aggression); whether subcomponents of NE recognition (i.e., insensitivity and misspecifications) are relatively more important; and how these relations change over the course of development. We assessed emotion recognition, overt aggression, attention deficit hyperactivity disorder (ADHD) symptoms, and oppositional defiant disorder (ODD) symptoms in an ethnically diverse sample of Canadian children (N = 150; 4-year-olds, N = 148; 8-year-olds) and followed up with them 1 year later (86.9% retention). Emotion recognition was assessed using a behavioral task and caregivers reported on children's externalizing symptoms. Children with lower NE recognition had higher initial, but not subsequent, overt aggression, even when controlling for nonaggressive externalizing symptoms (i.e., ADHD and ODD symptoms). NE recognition was not concurrently or longitudinally associated with nonaggressive externalizing symptoms. Age and gender did not moderate these findings. Both higher NE insensitivity (e.g., reporting a sad face appears neutral) and misspecifications (e.g., reporting a sad face appears angry) were significantly associated with higher concurrent overt aggression. In conclusion, both NE insensitivity and misspecifications were found to be uniquely important for children's overt aggression. These findings highlight the importance of different forms of NE recognition and differentiating between aggressive and nonaggressive externalizing problems in children.

Mentalizing mediates the association between emotional abuse in childhood and potential for aggression in non-clinical adults

BACKGROUND

Emotional abuse in childhood has been linked to a higher expression of aggressive behavior in adulthood. The identification of protective factors that mitigate this association is needed. Mentalizing-the capacity to understand behavior in terms of intentional mental states-appears to be a promising candidate factor that possibly modifies maladaptive consequences of early emotional abuse.

OBJECTIVE

This study investigated associations between the history of emotional abuse, aggressive behavior in adulthood and mentalizing capacities in a non-clinical sample of adults.

METHODS

214 healthy adults completed questionnaires measuring retrospectively rated experiences of emotional abuse in childhood, mentalizing capacities and aggressive behavior in a cross-sectional design.

RESULTS

Results indicated associations between emotional abuse in childhood, uncertainty about mental states, and aggressive behavior in adulthood. Moreover, certainty about mental states counteracted the negative effect of emotional abuse and partially mediated the associations between emotional abuse and aggressive behavior in adulthood.

CONCLUSION

This study extends current research and sheds further light on the relationship between emotional abuse in childhood, the health-promoting capacity of mentalizing, and aggressive behavior in non-clinical adults.

Is the association between childhood maltreatment and aggressive behavior mediated by hostile attribution bias in women? A discordant twin and sibling study

Understanding the mechanisms behind aggressive behavior (AGG) is vital so that effective prevention and intervention strategies can be developed. Maltreated children are hypothesized to be prone to social information processing biases, such as hostile attribution bias (HAB), which, in turn, may increase the likelihood of behaving aggressively. The first aim of the present study was to replicate findings regarding associations between childhood maltreatment (CM), HAB, and aggression in a population-based sample of Finnish female twins and their sisters (N = 2,167). However, these associations might not be causal but instead confounded by familial factors, shared between the variables. The second aim was, thus, to test the associations when potential confounding by familial (genetic or common environmental) effects were controlled for using a multilevel discordant twin and sibling design within (a) 379 pairs of twins (n_pairs  = 239) or siblings (n_pairs  = 140), and (b) within the 131 monozygotic (MZ) twin pairs. Consistent with previous studies, HAB mediated the association between CM and AGG when familial confounding was uncontrolled. No support was found for the mediation when controlling for familial confounding. Between-pair associations were found between CM and AGG, and between CM and HAB. In addition, within-pair associations were found between HAB and AGG, and between CM and AGG, however, these were nonsignificant in the discordant MZ analysis, offering the most stringent control of familial confounding. The results indicate the necessity of taking familial confounding into account when investigating the development of AGG.

Childhood Maltreatment Is Associated With Aggression Among Male Juvenile Delinquents in China: The Mediating Effects of Callous-Unemotional Traits and Self-Control

Background: Aggression is an important risk factor for delinquency and crime in adolescents. Previous studies have indicated that childhood maltreatment plays an important role in the development of aggression. However, whether the effect could be mediated by other factors is still unknown. Evidence suggests that callous-unemotional (CU) traits and self-control may be candidate mediators in the relationship between childhood maltreatment and aggression.

Methods: A total of 585 male juvenile delinquents from China were recruited for the present study. We measured self-reported childhood maltreatment, CU traits, self-control, and aggression with the short form of the Childhood Trauma Questionnaire (CTQ-SF), the Inventory of Callous-Unemotional Traits (ICU), the Self-Control Scale (SCS), and the Aggression Questionnaire (AQ), respectively. Furthermore, we constructed multiple mediation models to investigate the mediating effects of CU traits and self-control on the relationship between childhood maltreatment and aggression. Childhood maltreatment and aggression were entered into the model as the independent and dependent variables, respectively, and CU traits and self-control were treated as the mediating variables. In addition, the moderating role of self-control in the relationship between childhood maltreatment and aggression was tested by constructing a moderation model.

Results: Correlation analysis showed significant positive correlations among childhood maltreatment, CU traits, and aggression (all r values > 0.31, P values < 0.01), and self-control was negatively correlated with these three factors (all r values < −0.32, P values < 0.01). Mediation analyses showed that the relationship between childhood maltreatment and aggression was completely and sequentially mediated by the factors of CU traits and self-control (indirect effect = 0.31, P < 0.001). In addition, the relationship between childhood maltreatment and aggression could also be completely mediated by CU traits (indirect effect = 0.24, P < 0.001) and self-control (indirect effect = 0.26, P < 0.001) separately.

Conclusion: Our results indicate that, in a sample of male juvenile delinquents in China, the relationship between childhood maltreatment and adolescent aggression was found to be mediated by CU traits and self-control, which may shed light on the development of aggression among male juvenile delinquents.

Childhood Trauma in Persons With Schizophrenia and a History of Interpersonal Violence

BACKGROUND

Childhood trauma is a risk factor for psychosis as well for violent behavior and offending later in life. Childhood trauma comprises subdomains of abuse and neglect that may be differently related to later violence among patients with schizophrenia. The aim of this study was to map the subdomains of childhood trauma associated with violent offending in schizophrenia.

METHODS

Information on childhood trauma from predominantly male patients with a DSM-IV diagnosis of schizophrenia and a history of violent offending (interpersonal violence) (SCZ-V, n = 19), schizophrenia patients without a history of violence (SCZ-NV, n = 34), and healthy controls (HC, n = 66) was obtained with the Childhood Trauma Questionnaire (CTQ). Differences between groups in total maltreatment scores and the five subdomains including physical, emotional, and sexual abuse, as well as physical and emotional neglect were analyzed.

RESULTS

SCZ-V had the highest median CTQ scores for all sub-domains. SCZ-V reported significantly higher total CTQ scores than SCZ-NV and HC. SCZ-V had significantly higher scores than HC on all subdomains, and significantly higher than SCZ-NV on physical and emotional neglect. SCZ-NV had higher scores on all domains except sexual abuse compared to HC.

CONCLUSION

SCZ-V patients had higher exposure to childhood trauma than SCZ-NV, and both schizophrenia groups had higher exposure than HC. The results suggest that childhood physical and emotional neglect may be of specific importance to later violence in schizophrenia.

The relationship between childhood trauma, dopamine release and dexamphetamine-induced positive psychotic symptoms: a [11C]-(+)-PHNO PET study

Childhood trauma is a risk factor for psychosis. Amphetamine increases synaptic striatal dopamine levels and can induce positive psychotic symptoms in healthy individuals and patients with schizophrenia. Socio-developmental hypotheses of psychosis propose that childhood trauma and other environmental risk factors sensitize the dopamine system to increase the risk of psychotic symptoms, but this remains to be tested in humans. We used [¹¹C]-(+)-PHNO positron emission tomography to measure striatal dopamine-2/3 receptor (D_2/3R) availability and ventral striatal dexamphetamine-induced dopamine release in healthy participants (n = 24). The relationships between dexamphetamine-induced dopamine release, dexamphetamine-induced positive psychotic symptoms using the Positive and Negative Syndrome Scale (PANSS), and childhood trauma using the Childhood Trauma Questionnaire (CTQ) were assessed using linear regression and mediation analyses, with childhood trauma as the independent variable, dexamphetamine-induced dopamine release as the mediator variable, and dexamphetamine-induced symptoms as the dependent variable. There was a significant interaction between childhood trauma and ventral striatal dopamine release in predicting dexamphetamine-induced positive psychotic symptoms (standardized β = 1.83, p = 0.003), but a mediation analysis was not significant (standardized β = -0.18, p = 0.158). There were no significant effects of dopamine release and childhood trauma on change in negative (p = 0.280) or general PANSS symptoms (p = 0.061), and there was no relationship between ventral striatal baseline D_2/3R availability and positive symptoms (p = 0.368). This indicates childhood trauma and dopamine release interact to influence the induction of positive psychotic symptoms. This is not consistent with a simple sensitization hypothesis, but suggests that childhood trauma moderates the cognitive response to dopamine release to make psychotic experiences more likely.

Neurocognitive Adaptation and Mental Health Vulnerability Following Maltreatment: The Role of Social Functioning

Childhood maltreatment is associated with a lifetime increase in risk of mental health disorder. We propose that such vulnerability may stem in large part from altered patterns of social functioning. Here, we highlight key findings from the psychological and epidemiological literature indicating that early maltreatment experience compromises social functioning and attenuates social support in ways that increase mental health vulnerability. We then review the extant neuroimaging studies of children and adolescents, focusing on three domains implicated in social functioning: threat processing, reward processing, and emotion regulation. We discuss how adaptations in these domains may increase latent vulnerability to mental health problems by impacting on social functioning via increased stress susceptibility as well as increased stress generation. Finally, we explore how computational psychiatry approaches, alongside systematically reported measures of social functioning, can complement studies of neural function in the creation of a mechanistic framework aimed at informing approaches to prevention and intervention.

Trauma and Aggression: Investigating the Mediating Role of Mentalizing in Female and Male Inpatient Adolescents

High rates of posttraumatic stress disorder (PTSD) symptoms and elevated levels of aggression are common among youth in inpatient psychiatric settings. Several models link trauma exposure to aggression through anomalous mental state reasoning. Some theoretical frameworks linking trauma to aggression specify that the over-attribution of hostile mental states contributes to the development of aggressive behavior whereas other theories suggest that an inhibition of mental state reasoning leads to aggressive behavior. Using a sample of inpatient adolescents, the current study examined relations between PTSD symptoms and four forms of aggression, exploring the role of both over- and under-mentalizing (i.e., hypo- and hypermentalizing) as mediators and gender as a moderator. The results suggest that hypermentalizing, but not hypomentalizing, mediates the relation between trauma and aggression, extending prior research related to inpatient adolescents for the first time. Evidence of moderated mediation was noted, such that this mediational relation was evident for females but not males. The current study offers support for differential underlying causes of aggression among males and females with PTSD symptoms.

History of childhood trauma as risk factors to suicide risk in major depression

The aim of this study was to compare childhood trauma scores domains between Major Depressive Disorder (MDD) patients with and without suicide risk. This is cross-sectional study including a clinical sample of adults (18-60 years) diagnosed with MDD through the Mini International Neuropsychiatric Interview Plus version (MINI Plus). The Childhood Trauma Questionnaire (CTQ) was also used to verify types of trauma scores: abuse (emotional, physical, and sexual) and neglect (emotional and physical). Adjusted analysis was performed by linear regression. The sample was composed to 473 patients, suicide risk was observed in 16.3% of them. Suicide risk was independently associated with emotional abuse and neglect and sexual abuse, but not with physical abuse and neglect. Different domains of childhood trauma are associated with suicide risk in MDD population and emotional trauma should be considered a risk factor for suicide risk in MDD patients.

Specialized Behavioral Therapies for Children with Special Needs

This article describes common mental health problems in children and adolescents, and the types of specialized, evidence-based treatments that are most effective in treating these needs. The value of using an evidence-based treatment is now widely acknowledged, and the number of interventions with empirical support is increasing. This article provides an overview of the effects of trauma on developing children, with an emphasis on common maladaptive responses in infancy, toddlerhood, young childhood, middle childhood, and adolescence. This is followed by descriptions of several well-researched interventions that have the greatest utility for each distinct phase of child development.

Childhood physical abuse and aggression: Shame and narcissistic vulnerability

This study examined narcissistic vulnerability and shame-proneness as potential mediators between childhood physical abuse (CPA) and adult anger and aggression. Participants were 400 undergraduate students, 134 of whom had a history of CPA. All participants completed self-report questionnaires assessing history of CPA, shame-proneness, narcissistic vulnerability, physical aggression, trait anger, and hostility. Results indicated abused participants were more angry and aggressive and experienced higher levels of shame-proneness and narcissistic vulnerability than nonabused participants. Multiple mediation analyses showed that narcissistic vulnerability, but not shame-proneness, partially mediated the relation between abuse and physical aggression. However, narcissistic vulnerability and shame-proneness both emerged as partial mediators between abuse and the anger and hostility variables. These findings suggest that narcissistic vulnerability and shame-proneness may function as mediators of adjustment following childhood maltreatment. Study limitations and recommendations for future research are discussed.

Mentalization Mediates the Relationship between Early Maltreatment and Potential for Violence in Adolescence

AIM

The present study investigates the role of attachment representation and mentalization as possibly protective factors in the relationship between early maltreatment and potential for violence in adolescence.

METHODS

For the current study, 161 adolescents, aged 14-21 years, were recruited from high schools and youth psychiatry. Early maltreatment was assessed by the Childhood Experiences of Care and Abuse Questionnaire, attachment was assessed using the Adult Attachment Projective Picture System, and mentalization was coded with the Reflective Functioning Scale from Adult Attachment Interviews. Potential for violence was operationalized using the Reactive-Proactive Aggression Questionnaire, and the presence of conduct disorder was assessed by the Structured Clinical Interview. Using structural equation modeling, reflective functioning and attachment were tested as mediators on the direct effect of early maltreatment on potential for violence.

RESULTS

There was a direct effect of early maltreatment on potential for violence. Furthermore, this direct effect was partially mediated by reflective functioning but not by attachment representations.

DISCUSSION

The results contribute to the idea that mentalization serves as a protective factor that may suspend the pathway from early maltreatment to violence in adolescence. Because of the transformation of attachment patterns into generalized cognitive models of attachment, attachment in adolescence may have a less pronounced effect on violence in this specific developmental phase. Future studies should test for further group differences in community and clinical groups, which was not possible in the present study due to the limited sample size.

Longitudinal measures of hostility in deployed military personnel

Increases in anger and hostility are commonly found after military deployment. However, it is unknown how anger and hostility develop over time, and which veterans are more at risk for developing these complaints. Data of 745 veterans one month before deployment to Afghanistan and one, six, twelve and 24 months after deployment were analyzed in a growth model. Growth mixture modeling revealed four classes based on their growth in hostility. Most of the participants belonged to a low-hostile group or a mild-hostile group that remained stable over time. Two smaller groups were identified that displayed increase in hostility ratings after deployment. The first showed an immediate increase after deployment. The second showed a delayed increase between twelve and 24 months after deployment. No groups were identified that displayed a decrease of hostility symptoms over time. Multinomial logistic regression was applied to predict group membership by age, education, early trauma, deployment stressors and personality factors. This study gains more insight into the course of hostility over time, and identifies risk factors for the progression of hostility.

Linkages between childhood emotional abuse and marital satisfaction: The mediating role of empathic accuracy for hostile emotions

Research linking childhood emotional abuse (CEA) and adult marital satisfaction has focused on individuals without sufficient attention to couple processes. Less attention has also been paid to the effects of CEA on the ability to read other's emotions, and how this may be related to satisfaction in intimate relationships. In this study, 156 couples reported on histories of CEA, marital satisfaction and empathic accuracy of their partners' positive and hostile emotions during discussion of conflicts in their relationships. Actor-Partner Interdependence Modeling was used to examine links between CEA and marital satisfaction, with empathic accuracy as a potential mediator. Both men's and women's CEA histories were linked not only with their own lower marital satisfaction but also with their partners' lower satisfaction. Empathic accuracy for hostile emotions mediated the link between women's CEA and their satisfaction and their partners' satisfaction in the relationship. Findings suggest that a history of CEA is associated with difficulties with empathic accuracy, and that empathic inaccuracy in part mediates the association between CEA and adult marital dissatisfaction.

Intermittent Explosive Disorder and aversive parental care

Parental bonding has been shown to have lasting impacts on the psychological development of children. Despite a growing body of research examining trauma as it relates to Intermittent Explosive Disorder (IED), no prior research has examined the relationship between parental bonding and IED. Six hundred fifty eight subjects were studied and categorized into one of three groups: Normal Control (no history of current or lifetime Axis I or Axis II disorder), Psychiatric Control (current and/or lifetime Axis I and/or Axis II disorders without IED), and IED (met current and/or lifetime criteria for IED). Self-reported parental care was assessed using the Parental Bonding Inventory (PBI). PBI Care scores were lowest among IED subjects, which were lower than among Psychiatric Control subjects, which were lower than among Normal Control subjects. PBI Control scores were highest among IED and Psychiatric Control subjects, which were higher than among Normal Control subjects. The diagnostic group differences in PBI Care/PBI Control scores were not impacted by the number of Axis I/II diagnoses. The findings in this study expand the link between childhood trauma exposure, violent behavior, and IED. This is the first report of an association of IED with an aversive childhood parenting environment.

The associations among childhood maltreatment, "male depression" and suicide risk in psychiatric patients

In the current cross-sectional study, we aimed to investigate the presence and severity of "male" depressive symptoms and suicidal behaviors in psychiatric patients with and without a history of child abuse and neglect, as measured by the Childhood Trauma Questionnaire (CTQ), as well as to explore the associations among childhood maltreatment, "male depression" and suicide risk. The sample consisted of 163 consecutively admitted adult inpatients (80 men; 83 women). The patients were administered the CTQ, Gotland Male Depression Scale (GMDS), and Suicidal History Self-Rating Screening Scale (SHSS). Those with a moderate-severe childhood maltreatment history were more likely to be female (p<0.05) and reported more "male depression" (p<0.001) and suicidal behaviors (p<0.01) as compared to those not having or having a minimal history of child abuse and neglect. In the multivariate analysis, only the minimization/denial scale of the CTQ (odds ratio=0.31; p<0.001) and "male depression" (odds ratio=1.83; p<0.05) were independently associated with moderate/severe history of child maltreatment. The findings suggest that exposure to abuse and neglect as a child may increase the risk of subsequent symptoms of "male depression", which has been associated with higher suicidal risk.

'She called her partner - hence she is needy': depressed patients show increased tendencies to make spontaneous trait inferences

BACKGROUND

Interpersonal stress generation is an important maintaining factor in major depression; however, little is known about the psychological mechanisms that undermine interpersonal functioning. This study investigated the role of deficits in person perception to this regard.

METHOD

Depressed patients (n = 20) and healthy controls (n = 20) completed a false recognition task that measured participants' tendencies to make spontaneous trait inferences (STIs), that is to spontaneously ascribe personality traits to other people. Participants then reported interpersonal daily hassles for one week following the task.

RESULTS

Tendencies to make STIs were significantly higher in depressed patients, particularly those with a history of childhood trauma. The degree to which participants made STIs was significantly related to depression severity, and predicted the occurrence of interpersonal daily hassles during follow-up across, but not within groups.

CONCLUSIONS

The results suggest that depressed patients show characteristic biases in person perception that may contribute to the generation of interpersonal stress.

The relationship between adult health and childhood maltreatment, as moderated by anger and ethnic background

Childhood maltreatment, anger, and racial/ethnic background were examined in relation to physical health, psychological well-being, and blood pressure outcomes. This study used data from a diverse sample of African American, Latino, and Caucasian participants (N=198). Results from a series of multiple regressions indicated anger and total childhood maltreatment were robust predictors of poorer health. Although correlational analyses found maltreatment from the mother and father were associated with poorer health outcomes, when considered as part of the regression models, only a relationship between maltreatment from the mother and physical health was found. Greater anger scores were linked with lower blood pressure, particularly systolic blood pressure. Generally, more psychological and physical symptom reporting was found with greater anger scores, and higher levels of total maltreatment also predicted physical symptoms. The pattern of interactions indicated anger was more detrimental for African American participant's (and marginally so for Latino participant's) physical health. Interestingly, interactions also indicated total childhood maltreatment was related to fewer symptoms for Latino participants. Although child maltreatment may be viewed as a moral and/or human rights issue, this study provides evidence that it can also be viewed as a public health issue. Our study demonstrated that known health risk factors such as anger and maltreatment may operate in a different pattern dependent on ethnic/cultural background. The findings suggest health and health disparities research would benefit from greater exploration of the differential impact of certain moderating variables based on racial/ethnic background.

Structural brain alterations associated with schizophrenia preceded by conduct disorder: a common and distinct subtype of schizophrenia?

Conduct disorder (CD) prior to age 15 is a precursor of schizophrenia in a minority of cases and is associated with violent behavior through adulthood, after taking account of substance misuse. The present study used structural magnetic imaging to examine gray matter (GM) volumes among 27 men with schizophrenia preceded by CD (SZ+CD), 23 men with schizophrenia but without CD (SZ-CD), 27 men with CD only (CD), and 25 healthy (H) men. The groups with schizophrenia were similar in terms of age of onset and duration of illness, levels of psychotic symptoms, and medication. The 2 groups with CD were similar as to number of CD symptoms, lifelong aggressive behavior, and number of criminal convictions. Men with SZ+CD, relative to those with SZ-CD, displayed (1) increased GM volumes in the hypothalamus, the left putamen, the right cuneus/precuneus, and the right inferior parietal cortex after controlling for age, alcohol, and drug misuse and (2) decreased GM volumes in the inferior frontal region. Men with SZ+CD (relative to the SZ-CD group) and CD (relative to the H group) displayed increased GM volumes of the hypothalamus and the inferior and superior parietal lobes, which were not associated with substance misuse. Aggressive behavior, both prior to age 15 and lifetime tendency, was positively correlated with the GM volume of the hypothalamus. Thus, among males, SZ+CD represents a distinct subtype of schizophrenia. Although differences in behavior emerge in childhood and remain stable through adulthood, further research is needed to determine whether the differences in GM volumes result from abnormal neural development distinct from that of other males developing schizophrenia.