A General Population Twin Study of Conduct Problems and the Auditory P300 Waveform

Reduced amplitude of the P300 event-related potential has been consistently associated with a variety of externalising problems, including conduct disorder. The few available genetically-informative studies of these relationships, however, were conducted among adolescents/adults (i.e., at an age when conduct disorder has typically already become manifest). Among 200 general population twins with a mean age of 9 years (range 6–14 years), we studied the relationship between the P300 waveform elicited by an auditory oddball task and the DSM-oriented conduct problems scale of the Child Behavior Checklist 6–18. Conduct problems scores were negatively and significantly correlated (r?=??0.19, p?=?0.01) with P300 amplitude; correlations between P300 amplitude and the other DSM-oriented Child Behavior Checklist scales were non-significant, except for oppositional defiant problems (p?=?0.01). We found moderate heritability estimates for both P300 amplitude (0.58, CI:0.37;0.73) and conduct problems (0.52, CI:0.25;0.70). Bivariate twin analyses indicated that the covariation between these two phenotypes can be explained by additive genetic factors only, with a genetic correlation of ?0.33. An association between reduced P300 amplitude and conduct problems can be substantiated already in childhood, at an age that precedes the most typical onset of conduct disorder. This relationship appears to be genetic in nature. Reduced P300 amplitude can represent a valuable marker for conduct problems, and can contribute to the early identification of children at high-risk for conduct disorder.     

A Model for Structural Changes of Belief

The paper suggests a way of modeling belief changes within the tradition of formal belief revision theories. The present model extends the scope of traditional proposals, such as AGM, so as to take care of “structural belief changes” – a type of radical shifts that is best illustrated with, but not limited to, instances of scientific discovery; we obtain AGM expansions and contractions as limiting cases. The representation strategy relies on a non-standard use of a semantic machinery. More precisely, the model seeks to correlate knowledge states with interpretations of a given formal language L, in such a way that the epistemic state of an agent at a given time gives rise to a picture of how things could be, if there weren’t anything else to know. Interpretations of L proceed along supervaluational ideas; hence, the model as a whole can be seen as a particular application of supervaluational semantics to epistemic matters. Presented by Hannes Leitgeb     

Validation of a Standardized Multiple‐Choice Multicultural Competence Test: Implications for Training,Assessment, and Practice

The Multicultural Counseling and Psychotherapy Test (MCPT), a measure of multicultural counseling competence (MCC), was validated in 2 phases. In Phase 1, the authors administered 451 test items derived from multicultural guidelines in counseling and psychology to 32 multicultural experts and 30 nonexperts. In Phase 2, the authors administered the top 50 discriminative items to licensed mental health professionals (N = 227) and compared MCPT scores to external indicators of MCC. Evidence was found for the construct validity and internal consistency reliability of the MCPT. El Test de Consejería Multicultural y Psicoterapia (MCPT, por sus siglas en inglés), una medida de la competencia en consejería multicultural (MCC, por sus siglas en inglés) fue validado en dos fases. En la Fase 1, los autores administraron 451 elementos del test derivados de las pautas multiculturales en consejería y psicología a 32 expertos multiculturales y 30 no expertos. En la Fase 2, los autores administraron los 50 elementos más discriminativos a profesionales licenciados de la salud mental (N = 227) y compararon los puntajes del MCPT con indicadores externos de MCC. Se hallaron evidencias de la validez del constructo y la fiabilidad de la consistencia interna del MCPT.     

Usefulness of emotive imagery in the treatment of childhood phobias: Clinical guidelines,case examples and issues

Emotive imagery is a variant of systematic desensitization that has been developed for use in the treatment of children's excessive fears. We outline clinical guidelines for the use of emotive imagery and present several case examples. Although emotive imagery appears to be useful and cost efficient, controlled studies are needed to establish the efficacy of emotive imagery and explore the active treatment ingredients or mechanism.     

The relationship between personality and affect over the lifespan

This study compared the trait and emotion perspectives of personality development by examining relationships between extraversion, neuroticism, positive and negative affect across the lifespan. A total of 533 volunteers: 228 children and early adolescents (8 to 15 years), 163 late adolescents and young adults (16 to 29 years) and 142 adults (30 to 68 years) completed Eysenck's Personality Questionnaire (EPQ) and the Positive and Negative Affect Schedule (PANAS). Extraversion correlated significantly with positive affect and neuroticism with negative affect in each age group. As predicted by the emotion perspective, correlations were significantly stronger for adults than children and early adolescents. In addition, extraversion-positive affect and neuroticism-negative affect factors explained less variance for children and early adolescents compared to those of adults.     

The Biophilia Hypothesis and Life in the 21st Century: Increasing Mental Health or Increasing Pathology?

Wilson's biophilia hypothesis includes the claim that, as a consequence of evolution, humans have an innate tendency to focus on life and lifelike processes. A review of various literatures converges to support this central claim. One area of support for our innate affiliation with nature comes from research demonstrating increased psychological well-being upon exposure to natural features and environments. Support also comes from the strength and prevalence of phobic responses to stimuli of evolutionary significance and near absence of such responses to potentially dangerous human-made stimuli. That survival emotions of equivalent intensity and prevalence have failed to develop in response to modern life-threatening stimuli can be explained by the extremely rapid process of change and progress that has occurred post World War II and continues at an ever increasingly rapid pace. Given that our modern ways of living, as prescribed by Western industrialised culture, stand in stark contrast to our evolutionary history, it is proposed that we may currently be witnessing the beginnings of significant adverse outcomes for the human psyche.     

The Dual Value of the Web: Risks and Benefits of the Use of the Internet in Disorders with A Self-Destructive Component in Adolescents and Young Adults

Eating disorders (ED) and non-suicidal self-injury (NSSI) present common aspects and factors which contribute to their onset and development. The last decade has seen an increasing circulation of online materials and interactions connected to ED and NSSI. There is a general agreement among mental health clinicians and researchers that this kind of online content involves serious risks, such as normalization and reinforcement of unhealthy behaviors, alongside with some benefits, like receiving peer support and validation. The aim of this paper is to offer an overview of major research contributions on this topic. After describing common aspects between these disorders, we analyze data concerning the usage of harm-advocating websites on internet and the characteristics of users. Furthermore, we define and explore the contents of both pro-ED and NSSI websites, and we extensively inspect risks and benefits of the exposure to these online content. Finally, we present clinical guidelines for assessment, intervention and prevention, particularly focusing on family interventions. Due to the rapidity of changes when technology is involved, the research on this topic is far from being concluded; more in-depth studies are needed, not only to explore long term effects of the use of the websites described, but also to investigate new alarming tendencies such as the diffusion of websites challenging self-destructive behaviors.     

A critical assessment of pedestrian behaviour models

This paper concerns a review and critical assessment of the existing research on pedestrian behaviour in urban areas, focusing on two separate yet complementary aspects: route choice and crossing behaviour. First, an exhaustive review of the existing route choice models for pedestrians is presented. It is shown that the existing models are mainly more stochastic and more macroscopic than required and seldom incorporate the interactions between pedestrians and traffic. Second, the existing models on pedestrians crossing behaviour are presented and assessed. It is shown that, although their approach is usually detailed, deterministic and traffic-oriented, they are mainly devoted to a local level behaviour and focus on only one type of all the potential determinants. Most importantly, these two complementary and possibly interdependent aspects of pedestrian behaviour are always examined separately. The results of this review reveal a lack of an overall and detailed consideration of pedestrian behaviour along an entire trip in urban areas. Moreover, the need for an integrated approach based on flexibility, disaggregation and more determinism is identified. Accordingly, a set of modelling techniques are discussed as a general framework for further research in the field.     

Nighttime fears of children and adolescents: frequency, content, severity, harm expectations, disclosure, and coping behaviours

The present school-based study investigated the nighttime fears of 511 children and adolescents, aged 8-16 years. Participants were assessed using a structured interview about the frequency, content, severity, harm expectations, coping strategies, and disclosure of nighttime fears. Results indicated that nighttime fears are a common experience, with nearly two-thirds (64.2%) of children and adolescents reporting nighttime fears. Fear of intruders/home invasion was the most frequently reported nighttime fear. Females more frequently reported nighttime fears than males (72.9% and 54.6%, respectively) and a greater number of children reported nighttime fears compared to adolescents (79.4% and 48.8%, respectively). Nighttime fears were given moderate severity ratings, and harm expectations were most strongly associated with 'personal security' fears. Respondents reported a variety of coping strategies to manage their nighttime fears with self-control/distraction techniques being the most common. Most respondents reported disclosing their nighttime fear(s) to another person. The clinical implications of these findings and the methodological limitations are discussed.     

A Swedish non-word repetition test for preschool children

A Swedish non-word repetition test for preschool children was constructed with the aim of measuring short-term phonological memory, which has been shown to correlate with language development and language proficiency. Normative data based on results for 200 children four to six years of age are presented. An item analysis of the original 30-item test resulted in a shortened 24 non-word version found suitable for four- to six-year old children. Results for this shortened version, which had a Cronbach's alpha of 0.73, showed longer non-words to be more difficult to repeat than shorter ones, and significant effects of age and compatibility of the tester's and the child's accent, but not of gender. The results are discussed within the framework of Baddeley's working memory model.