Cluster A Personality Disorders: Schizotypal,Schizoid and Paranoid Personality Disorders in Childhood and Adolescence

Cluster A personality disorders (PD), including schizotypal personality disorder (SPD), paranoid personality disorder (PPD), and schizoid PD, are marked by odd and eccentric behaviors, and are grouped together because of common patterns in symptomatology as well as shared genetic and environmental risk factors. The DSM-IV-TR describes personality disorders as representing stable and enduring patterns of maladaptive traits, and much of what is understood about Cluster A personality disorders in particular stems from research with adult populations. Less in known about these disorders in children and adolescents, and controversy remains regarding diagnosis of personality disorders in general in youth. The current paper reviews the available research on Cluster A personality disorders in childhood and adolescence; specifically, we discuss differentiating between the three disorders and distinguishing them from other syndromes, measuring Cluster A disorders in youth, and the nature and course of these disorders throughout childhood and adolescence. We also present recent longitudinal data from a sample of adolescents diagnosed with Cluster A personality disorders from our research laboratory, and suggest directions for future research in this important but understudied area.     

The contact principle and utilitarian moral judgments in young children

In three experiments involving 207 preschoolers and 28 adults, we investigated the extent to which young children base moral judgments of actions aimed to protect others on utilitarian principles. When asked to judge the rightness of intervening to hurt one person in order to save five others, the large majority of children aged 3 to 5 years advocated intervention in contrast to another situation with the reverse cost/benefit ratio. This course of action was seen as acceptable by most children only when it did not require the agent to have physical contact with the victim and the victim’s harm was intended to produce the greatest good for the greatest number. Overall, the children’s responses were remarkably similar to those reported in adult studies. These findings document the extent to which some constraints on moral judgment are present in early human development.     

Effects of worry on physiological and subjective reactivity to emotional stimuli in generalized anxiety disorder and nonanxious control participants

The present study examined the effect of worry versus relaxation and neutral thought activity on both physiological and subjective responding to positive and negative emotional stimuli. Thirty-eight participants with generalized anxiety disorder (GAD) and 35 nonanxious control participants were randomly assigned to engage in worry, relaxation, or neutral inductions prior to sequential exposure to each of four emotion-inducing film clips. The clips were designed to elicit fear, sadness, happiness, and calm emotions. Self reported negative and positive affect was assessed following each induction and exposure, and vagal activity was measured throughout. Results indicate that worry (vs. relaxation) led to reduced vagal tone for the GAD group, as well as higher negative affect levels for both groups. Additionally, prior worry resulted in less physiological and subjective responding to the fearful film clip, and reduced negative affect in response to the sad clip. This suggests that worry may facilitate avoidance of processing negative emotions by way of preventing a negative emotional contrast. Implications for the role of worry in emotion avoidance are discussed.     

Training staff in multiple family therapy in a children's psychiatric hospital: from theory to practice

This article describes a systematized method for training clinical staff from a variety of mental health professions while implementing supportive, process‐oriented multiple family therapy (MFT) in a children's psychiatric hospital. The model uses a step‐by‐step approach based upon learning objectives specific to the theory and practice of MFT for each stage of the process. External consultants skilled and experienced in MFT supported tuition in the initial stages. The method employs seminars with theoretical and experiential components, highlighting the major conceptual features of group, family therapy and MFT. Advanced stages of the training model include experiential learning in small groups and ongoing peer group supervision with live families. The systematic procedure has relevance for ongoing supervision, research and best standards of clinical practice in the hospital.     

Hemispheric processing of anaphoric inferences: the activation of multiple antecedents

This research investigates the hemispheric processing of anaphors when readers activate multiple antecedents. Participants read texts promoting an anaphoric inference and performed a lexical decision task to inference-related target words that were consistent (Experiment 1) or inconsistent (Experiment 2) with the text. These targets were preceded by constrained or less constraining text and were presented to participants' right visual field-left hemisphere or to their left visual field-right hemisphere. In Experiment 1, both hemispheres showed facilitation for consistent antecedents and the right hemisphere showed an advantage over the left hemisphere in processing antecedents when preceded by less constrained text. In Experiment 2, the left hemisphere only showed negative facilitation for inconsistent antecedents. When readers comprehend text with multiple antecedents: both hemispheres process consistent information, the left hemisphere inhibits inconsistent information, and the right hemisphere processes less constrained information.     

Direct and indirect bully‐victims: differential psychosocial risk factors associated with adolescents involved in bullying and victimization

The present study examined psychosocial risk factors that differentiated direct and indirect bully‐victims from bullies, victims and uninvolved adolescents. A total of 7,290 (3,756 girls) students (ages 13–18 yr) from a region of Southern Ontario, Canada, completed a number of self‐report measures to determine the relation between direct and indirect bullying and victimization and several psychosocial risk factors, including normative beliefs about antisocial acts, angry‐externalizing coping, social anxiety, depression, self‐esteem, temperament, attachment, parental monitoring and peer relational problems. ANCOVA and logistic regression analyses indicated that indirect bully‐victims and victims were similar in demonstrating greater internalizing problems and peer relational problems than indirect bullies and uninvolved participants. Furthermore, adolescents involved in indirect bullying (bullies, bully‐victims) reported a higher level of normative beliefs legitimizing antisocial behaviour and less parental monitoring (males only) than indirect victims and uninvolved participants. Only normative beliefs legitimizing antisocial behaviour distinguished direct bully‐victims and bullies from victims and uninvolved adolescents. Results illuminate the distinct characteristics of direct and indirect bully‐victims; theoretical and clinical implications are discussed. Aggr. Behav. 32:551–569. 2006. © 2006 Wiley‐Liss, Inc.     

Maturation constrains the effect of exposure in linking language and thought: evidence from healthy preterm infants

The power of human language rests upon its intricate links to human cognition. By 3 months of age, listening to language supports infants’ ability to form object categories, a building block of cognition. Moreover, infants display a systematic shift between 3 and 4 months – a shift from familiarity to novelty preferences – in their expression of this link between language and core cognitive processes. Here, we capitalize on this tightly‐timed developmental shift in fullterm infants to assess (a) whether it also appears in preterm infants and (b) whether it reflects infants’ maturational status or the duration of their postnatal experience. Healthy late preterm infants (N = 22) participated in an object categorization task while listening to language. Their performance, coupled with that of fullterm infants, reveals that this developmental shift is evident in preterm infants and unfolds on the same maturational timetable as in their fullterm counterparts.