We studied the compositional turnover in infracommunities and component communities of ecto- and endoparasites infesting a bat, Miniopterus natalensis (Chiroptera, Miniopteridae), across seven sampling sites using the zeta diversity metric (measuring similarity between multiple communities) and calculating zeta decline and retention rate (both scales) and zeta decay (component communities). We asked whether the patterns of zeta diversity differ between (a) infracommunities and component communities; (b) ecto- and endoparasites and (c) subsets of communities infecting male and female bats. The pattern of compositional turnover differed between infracommunities and component communities in endoparasites only. The shape of zeta decline for infracommunities indicated that there were approximately equal probabilities of ecto- and endoparasitic species to occur on/in any bat individual within a site. The shape of zeta decline for component communities suggested the stochasticity of ectoparasite turnover, whereas the turnover of endoparasites was driven by niche-based processes. Compositional turnover in component communities of ectoparasites was more spatially dependent than that of endoparasites. Spatial independence of compositional turnover in endoparasites was due to subcommunities harboured by female bats. We conclude that the patterns of compositional turnover in infracommunities were similar in ecto- and endoparasites, whereas the patterns of turnover in component communities differed between these groups.

A case study is presented of a 13-year-old adolescent male with a long history of anxious symptoms related to school attendance. At the time of referral to the school refusal clinic, the adolescent had significant difficulty attending school, having attended for only 1 day in the past 3 weeks. A cognitive-behavioural treatment program was conducted over 3 weeks, consisting of seven sessions with the adolescent, seven sessions with his parents, and consultation to school personnel. Treatment focused on the implementation of behaviour management techniques by caregivers as well as teaching anxiety management skills to the adolescent. Positive treatment outcomes included the adolescent's return to full-time attendance at school as well as a decrease in emotional distress. The implications of treatment are discussed in relation to the simultaneous application of behaviour management and anxiety management strategies in the treatment of school refusal.

The heterogeneous nature of school refusal has led to much confusion surrounding the conceptualisation of this phenomenon. A number of researchers have developed taxonomic systems in an effort to enhance our understanding of school refusal and to facilitate communication among professionals working in the field. The current paper explores the evolution of these systems and outlines the limitations of each. Non-empirical classificatory systems are reviewed first, followed by empirical systems based on factor analyses and diagnostic profiles. A functional taxonomic system for problematic school attendance is then reviewed. Future research based on sound methodological procedures should aim to examine a broad range of child and family characteristics in order to develop reliable, homogenous subtypes for this population.

Traditionally, mental health professionals and school authorities have found school refusal to be a perplexing and challenging problem. Relevant to an understanding of school refusal, we initially review some important developmental-normative considerations. The clinical features, epidemiology, and etiology of school refusal are also briefly discussed. We then describe a number of behavioural strategies that have been used in the management of school refusal. Finally, we review the research support for the efficacy and acceptability of behavioural strategies in the treatment of school refusal.

Following Bandura's theory, a Self-efficacy Questionnaire for School Situations (SEQ-SS) was developed to assess the cognitions of school refusers. The instrument contains twelve school-related situations which are rated by children according to their belief about their ability to cope with each situation. Factor analysis yielded two reliable factors labelled Academic/Social Stress and Separation/Discipline Stress. Psychometric evaluation also revealed good internal consistency and test-retest reliability. Total self-efficacy scores for 135 school refusers ranged from very low to very high. Self-efficacy was highest with regard to doing school work and lowest with regard to answering peers' questions about absences. The clinical utility of the SEQ-SS is discussed, with implications for the selection of cognitive and behavioural treatment procedures. The application of the instrument in future research is also considered.

This article describes a cognitive-behavioural intervention implemented over 10 sessions with an adolescent girl experiencing school refusal and depression. Treatment focused on the learning of various coping skills to deal with stressful situations at home and school. Following a decision to change schools, a rapid school return was employed. A multimethod, multisource evaluation was used at pretreatment, posttreatment, and follow-up assessments. The data indicated positive treatment outcomes: the adolescent returned to full-time attendance at school and exhibited decreased levels of emotional distress. The treatment gains were maintained at a 3-month follow-up.

Background: Clark and Wells’ cognitive model of social anxiety proposes that socially anxious individuals have negative expectations of performance prior to a social event, focus their attention predominantly on themselves and on their negative self-evaluations during an event, and use this negative self-processing to infer that other people are judging them harshly. Aims: The present study tested these propositions. Method: The study used a community sample of 161 adolescents aged 14–18 years. The participants gave a speech in front of a pre-recorded audience acting neutrally, and participants were aware that the projected audience was pre-recorded. Results: As expected, participants with higher levels of social anxiety had more negative performance expectations, higher self-focused attention, and more negative perceptions of the audience. Negative performance expectations and self-focused attention were found to mediate the relationship between social anxiety and audience perception. Conclusions: The findings support Clark and Wells’ cognitive model of social anxiety, which poses that socially anxious individuals have distorted perceptions of the responses of other people because their perceptions are coloured by their negative thoughts and feelings.

Background: Cognitive-behavioural therapy (CBT) has proven to be effective for anxiety-based school refusal, but it is still unknown how CBT for school refusal works, or through which mechanisms. Aims: Innovative statistical approaches for analyzing small uncontrolled samples were used to investigate the role of self-efficacy in mediating CBT outcomes for anxiety-based school refusal. Method: Participants were 19 adolescents (12 to 17 years) who completed a manual-based cognitive-behavioural treatment. Primary outcomes (school attendance; school-related fear; anxiety) and secondary outcomes (depression; internalizing problems) were assessed at post-treatment and 2-month follow-up. Results: Post-treatment increases in school attendance and decreases in fear about attending school the next day were found to be mediated by self-efficacy. Mediating effects were not observed at 2-month follow-up. Conclusions: These findings provide partial support for the role of self-efficacy in mediating the outcome of CBT for school refusal. They contribute to a small body of literature suggesting that cognitive change enhances CBT outcomes for young people with internalizing problems. Regarding methodology, the product of coefficient test appears to be a valuable way to study mediation in outcome studies involving small samples.

This article describes the application of cognitive behavioural therapy to three sexually abused young people. We emphasise developmental influences and the nuances of the therapeutic approach. An exposure-based treatment approach was used with the youths. A multimodal assessment evaluation was conducted at pretreatment and posttreatment, and at a 3-month follow-up. Results on outcome measures indicated a positive therapeutic effect for the youths.

Child sexual abuse is a highly prevalent problem that frequently occasions the onset of posttraumatic stress disorder in the victimised youngster. Given the success of cognitive-behavioral interventions with adult trauma victims, it has been suggested that this treatment approach be applied to sexually abused children. We review the empirical support for the efficacy and acceptability of cognitive-behavioral strategies in the treatment of sexually abused children. Several clinical practice and research issues are also noted.

Anxiety is a highly prevalent problem with various manifestations in young children, especially those with an intellectual disability. Many parents of children with disabilities also experience a wide range of health problems, including anxiety, stress and depression. Very few group-based programs for parents of disabled children have been evaluated, and none of the existing research studies specifically address child or parental anxiety. Given the success of cognitive-behavioural interventions for anxious children without disabilities, it is logical that these interventions be applied to anxious intellectually disabled children. This paper presents a rationale for a new parent training-based early intervention program, targeting anxiety in this population of young people.

Aims: The purpose of this study was to investigate the cognitions of anxious school refusers. The cognitive constructs under investigation included negative cognition commonly linked to youth anxiety (i.e. negative automatic thoughts and cognitive errors) and positive automatic thoughts. Method: The cognition of school refusers (n = 50) and youth from a community sample (n = 181) was assessed with the Children's Automatic Thoughts Scale-Negative/Positive and the Children's Negative Cognitive Error Questionnaire-Revised. Results: When controlling for anxiety, school refusers were found to report more negative automatic thoughts concerning personal failure, fewer negative automatic thoughts concerning hostility, and fewer positive automatic thoughts. Negative automatic thoughts concerning personal failure and hostility, and the negative cognitive error of overgeneralizing were found to independently predict school refusal. Conclusions: The findings underscore the importance of further researching the role of cognition in the development, maintenance, and treatment of anxiety-based school refusal.

Background: The effectiveness of cognitive-behaviour therapy with young people may be influenced by a young person's capacity for self-reflection and insight. Clinicians who assess clients' proficiencies in these cognitive capacities can better tailor cognitive and behavioural techniques to the client, facilitating engagement and enhancing treatment outcome. It is therefore important that sound instruments for assessing self-reflection and insight in young people are available. Aims: The aim of the current study was to translate and adapt the Self-Reflection and Insight Scale (SRIS) for use with a child and adolescent population (Study 1), and to evaluate the psychometric properties of the resulting measure, the Self-Reflection and Insight Scale for Youth (SRIS-Y; Study 2). Method: In Study 1 (n = 145), the comprehensibility of the SRIS-Y was assessed in a community sample of children and adolescents. Study 2 (n = 215) then explored the reliability and structural, convergent, and divergent validity of the SRIS-Y. Results: The SRIS-Y was found to be comprehensible to young people, and had good reliability and structural validity. Conclusions: It appears that the SRIS-Y is a sound instrument for assessing therapy-relevant cognitive capacities in young people, of potential benefit in both research and clinical contexts. Future research foci include the predictive validity of the instrument.

Future CMOS technologies will require the use of substrate material with a very high mobility. Therefore, the combination of Ge pMOS with GaAs nMOS devices is investigated for its possible use in advanced CMOS applications. In this work, the physical, chemical and electrical properties of a-GeO2 interfacial passivation layer (IPL) for n-Ge(001) and p-GaAs(001) have been investigated, using Molecular Beam Epitaxy (MBE) technique. The efficient electrical passivation of Ge/GeO2 will be demonstrated, and in the case of GaAs, the use of a thin a-GeO2 interlayer reduces the defects at the interface.