Fragmentation testing for ductile thin films on polymer substrates

Fragmentation testing of thin films on substrates has in the past been mostly performed in situ using optical and scanning electron microscopy. While these techniques work well for brittle materials, they cannot always discern the difference between through-thickness cracks (TTCs) and localized plastic deformation of ductile films. Here, we describe fragmentation testing with atomic force microscopy and present criterion to distinguish TTCs and localized deformation for ductile films.     

Concordance between patients' information preferences and general practitioners' perceptions

Brief planning interventions, usually delivered within paper and pencil questionnaires, have been found to be effective in changing health behaviours. Using a double-blind randomised controlled trial, this study examined the efficacy of two types of planning interventions (action plans and coping plans) in increasing physical activity levels when they are delivered via the internet. Following the completion of self-reported physical activity (primary outcome) and theory of planned behaviour (TPB) measures at baseline, students (N = 1273) were randomised into one of four conditions on the basis of a 2 (received instructions to form action plans or not) × 2 (received instructions to form coping plans or not) factorial design. Physical activity (primary outcome) and TPB measures were completed again at two-month follow-up. An objective measure (attendance at the university's sports facilities) was employed 6 weeks after a follow-up for a duration of 13 weeks (secondary outcome). The interventions did not change self-reported physical activity, attendance at campus sports facilities or TPB measures. This might be due to low adherence to the intervention protocol (ranging from 58.8 to 76.7%). The results of this study suggest that the planning interventions under investigation are ineffective in changing behaviour when delivered online to a sample of participants unaware of the allocation to different conditions. Possible moderators of the effectiveness of planning interventions in changing health behaviours are discussed.     

Distortions in reports of health behaviors: The time span effect and illusory supefuority

Abstract

The occurreace of a time span effect and illusory superiority in self reports of health behaviors was tested. It was found that people report proportionally lower frequencies of both healthy and unhealthy behaviors if they give frequency estimations over a longer as compared to a shorter time span (time span effect). In addition, they report lower frequencies of unhealthy behaviors, and higher frequencies of healthy behaviors for themselves than for the average other (illusory superiority). For healthy but not for unhealthy behaviors a stronger illusory superiority effect was obtained in frequency reports for behavioral expectations as compared to past behaviors. Potential explanations and implications for subjective measurements of health behavior are discussed.     

Mentalization-based therapy with maltreated children living in shelters in southern Brazil: A single case study

This study describes the mentalization-based child therapy of a boy who suffered from early abuse and neglect, who was living in a shelter in southern Brazil. This single case study aimed at assessing whether this kind of psychotherapy contributes to reducing depressive symptoms and developing a greater capacity for reflection on the mental states of self and other, as part of developing a more coherent sense of self. Structured assessments were conducted before therapy and after six months of treatment, and the audio-recorded treatment sessions were analyzed using content analysis, in order to identify key themes in the treatment itself. The results suggested a significant improvement in depressive symptoms and some changes in mentalization with the beginnings of a movement toward a more cohesive and integrated self. We argue that mentalization-based child therapy could be a promising therapeutic approach for children who have experienced severe disruptions of emotional bonds, due to the way it focuses on the capacity to regulate affect and develop a more coherent sense of self.     

Understanding Adolescent Property Crime using a Delinquent Events Perspective

This qualitative research employed an integrated symbolic interactionist/cultural studies framework to guide its focus on 24 male adolescent offenders' perceptions of their involvement in delinquent events characterized by the commission of property crimes. Adolescents were asked to describe the situations within which their crimes were embedded, including what they were thinking and feeling throughout the course of the delinquent event. Results indicated that adolescents committed property crimes for thrills, to cope with stressors, to defend their gang, and for economic gain. In particular, each motive was associated with a certain set of interactions and conditions, which served as cues to guide the adolescents' interpretive process and eventual meaning construction. The relation between this process and the larger culture is discussed.     

Influence of wearing an unstable shoe construction on compensatory control of posture

This study investigated the influence of wearing unstable shoe construction (WUS) on compensatory postural adjustments (CPA) associated with external perturbations. Thirty-two subjects stood on a force platform resisting an anterior-posterior horizontal force applied to a pelvic belt via a cable, which was suddenly released. They stood under two conditions: barefoot and WUS. The electromyographic (EMG) activity of gastrocnemius medialis, tibialis anterior, rectus femoris, biceps femoris, rectus abdominis, and erector spinae muscles and the center of pressure (CoP) displacement were acquired to study CPA. The EMG signal was used to assess individual muscle activity and latency, antagonist co-activation and reciprocal activation at joint and muscle group levels. Compared to barefoot, WUS led to: (1) increased gastrocnemius medialis activity, (2) increased total agonist activity, (3) decreased antagonist co-activation at the ankle joint and muscle group levels, (4) increased reciprocal activation at the ankle joint and muscle group levels, and (5) decrease in all muscle latencies. No differences were observed in CoP displacement between conditions. These findings demonstrate that WUS led to a reorganization of the postural control system associated to improved performance of some components of postural control responses.     

The impact of body-part-naming training on the accuracy of imitative performances in 2- to 3-year-old children

A series of three experiments explored the relationship between 3-year-old children's ability to name target body parts and their untrained matching of target hand-to-body touches. Nine participants, 3 per experiment, were presented with repeated generalized imitation tests in a multiple-baseline procedure, interspersed with step-by-step training that enabled them to (i) tact the target locations on their own and the experimenter's bodies or (ii) respond accurately as listeners to the experimenter's tacts of the target locations. Prompts for on-task naming of target body parts were also provided later in the procedure. In Experiment 1, only tact training followed by listener probes were conducted; in Experiment 2, tacting was trained first and listener behavior second, whereas in Experiment 3 listener training preceded tact training. Both tact and listener training resulted in emergence of naming together with significant and large improvements in the children's matching performances; this was true for each child and across most target gestures. The present series of experiments provides evidence that naming--the most basic form of self-instructional behavior--may be one means of establishing untrained matching as measured in generalized imitation tests. This demonstration has a bearing on our interpretation of imitation reported in the behavior analytic, cognitive developmental, and comparative literature.     

Grounding person memory in space: Does spatial anchoring of behaviors improve recall?

In two experiments, we examine and find support for the general hypothesis that memory for behavioral information in the context of an impression formation task depends on where that information is located in vertical space. These findings extend earlier work showing that memory for location and shifts of spatial attention are influenced by the “good is up” metaphor. Specifically, we show that person memory is better for behavioral information in metaphor compatible locations (positive in upper space and negative in lower space) than in metaphor incompatible locations (positive in lower space and negative in upper space). These findings show for the first time that person‐specific information, and person memory in general, is structured spatially. Copyright © 2011 John Wiley & Sons, Ltd.