Process Evaluation of A Physical Activity Self-Management Program For Children: Spark

Abstract

SPARK is a controlled field study of a multi-component elementary school program to promote physical activity. One component is a weekly classroom-based self-management program, with the goal of increasing physical activity outside of school. The curriculum included goal setting, behavioral skills training, a reward system, and parent involvement. An evaluation of curriculum implementation and association between process and outcome was conducted using direct observation of lessons, subjective ratings by 24 teachers and 391 parents, and participation records of 549 students. Teachers viewed the self-management curriculum less positively than the physical education curriculum. Teachers were observed implementing an average of 65% of curriculum elements, which may have contributed to the limited effects of the self-management program. Student participation in the program, measured by points earned for doing out of school physical activity, was correlated significantly with changes in body mass index and multiple psychosocial variables among boys but not girls. Barriers to full program implementation were identified, and a remaining challenge is to improve self-management curriculum implementation by teachers.     

An application of protection motivation theory to riskier single-occasion drinking

Abstract

Cognitions in relation to drinking alcohol on a single occasion were explored within the framework of Protection Motivation Theory (PMT). One hundred and twenty three students provided information about their current weekend drinking, beliefs about drinking, and intentions to drink at safer limits. Data on self reported weekend drinking were gathered two weeks later from the same respondents. Analyses showed PMT components to be predictive of intentions but not of later behaviour. Perceived severity and self-efficacy related significantly to intentions for drinking at safer limits. No PMT measure differentiated between those who engaged in riskier single-occasion drinking at follow up and those whose drinking was less risky. Past behaviour was the only significant predictor of riskier single-occasion drinking at follow up. Implications for the current utility of PMT are discussed particularly in relation to respondents' reactions to newly identified health threats.     

Behavioral control of exercise in adults: Studies 7 and 8

Abstract

Building on our previous six study series, the current studies 7 and 8 evaluated behavioral methods of improving adherence to exercise in adults. The studies tested the effectiveness of a single exercise modality versus choice of a variety of exercises and were conducted as part of a 12-week extended studies college course in San Diego, CA. Recruitment efforts were targeted to individuals who reported that they were sedentary and/or had experienced difficulty adhering to regular exercise. Participants were 42 adults (32F, 10M; mean age = 42.0) in Study 7 and 48 adults (35F, 8M; mean age = 47.9) in Study 8. In each study, subjects were randomly assigned to a single focus or variety exercise condition. There were no significant group differences in class attendance or out-of-class exercise adherence rates in Studies 7 or 8. In Study 7, significantly lower drop-out rates were detected in the single focus group (19%) than the variety condition (47.6%) (p = 0.04). No significant group differences were detected for drop-out rates in Study 8. Suggestions for further research are offered.     

Patterns of Memory Performance in Children with Controlled Epilepsy on the CVLT-C

Decreased memory skills have been reported in children with epilepsy. However, standardized instruments to evaluate learning and memory in children have been unavailable until recently. The present study was designed to assess memory patterns in children with epilepsy based on the California Verbal Learning Test-Children's Version (CVLT-C). The test was administered to 44 children with complex partial seizures and 21 children with generalized seizures between 8 and 13 years of age. Children in the study had been treated for epilepsy for at least 6 months, had well-controlled seizures on monotherapy, and had no evidence of anticonvulsant toxicity. Children with head injuries, learning disabilities, or hyperactivity were excluded. Test results did not reflect differences in memory performance based on seizure type. Scores for the entire sample indicated intact new learning, decreased intrusions and perseverative responses, and better short-term than long-term delayed recall. Recognition skills were stronger than long-term delayed recall skills and suggested that memory performance may be improved for these children when a multiple-choice format is available in academic settings.     

Dipole of misfit dislocations in axially symmetric structures

The nucleation of a pair of misfit dislocations of Burgers vectors b 1 and b 2 with b 1 + b 2 = 0 has been studied for the case of an axially symmetric two-phase structure. Considering a cylindrical inclusion epitaxially stressed in a unbounded matrix, the variation in the total energy due to the formation of the dipole has first been determined as a function of the radius of the inclusion and the epitaxial stress. The conditions for nucleation of the dipole on the interface have then been investigated as a function of the ratio of the shear modulus and of the misfit stress.     

Anxiety reactivity and anxiety perseveration represent dissociable dimensions of anxiety vulnerability: A replication and extension

Trait anxiety is a unitary construct reflecting individual differences in the tendency to experience anxious symptomatology, typically measured with questionnaires such as the Spielberger Trait Anxiety Inventory (STAI‐T). Recent research by Rudaizky, Page, and MacLeod has found evidence that two different dimensions of trait anxiety account for independent variance in trait anxiety scores. These dimensions are anxiety reactivity (AR), reflecting the probability of experiencing an anxious reaction, and anxiety perseveration (AP), reflecting the persistence of anxious symptoms once elicited. There are two key issues addressed in this study: first, the replicability of Rudaizky et al.'s findings and second, the ability of the measures of AR and AP developed by Rudaizky et al. to predict independent variance in STAI‐T scores after statistically controlling for variance shared with a measure of depression. Regression analysis determined that AR and AP do account for independent variance in STAI‐T trait anxiety scores even after statistically controlling for depression. The implications of these findings for the understanding of anxiety vulnerability are discussed.     

Cue competition effects in the planarian

The learning abilities of planarian worms (Dugesia tigrina) were assessed by using a number of Pavlovian conditioning paradigms. Experiment 1 showed that planaria were susceptible to basic conditioning in that they readily developed a conditioned response to a change in ambient luminance when it was consistently paired with an electric shock over a number of trials. In Experiment 2, the change in luminance was presented in a compound with a vibration stimulus during conditioning. Subsequent tests revealed poor conditioning of the elements compared with control groups in which the animals were conditioned in the presence of the elements alone, an instance of overshadowing. In Experiment 3, pre-training of one of the elements before compound conditioning resulted in blocking of learning about the other element. These results add to other studies that have reported cue competition effects in animal species belonging to different phyla (chordate, mollusk, arthropod), suggesting that learning in these phyla could be ruled by similar principles. The results are discussed adopting an evolutionary-comparative approach.     

Robert Burns in the counsellor's chair: A socio-cultural analysis of the Burns myth

To illustrate how difficult endings are, this paper first cites an Italian therapist's experience of the use of time with university students in Naples and then associates to contrasting examples in the novel, art, music and the cinema. It uses a dialogue about ending in the film Brief Encounter as a possible paradigm for what is needed in brief therapy. It then refers to the work of James Mann on different experiences of time which underlie the resistance to brief work. How can brief therapy contain the paradox between finite and infinite time? Incorporating another model of therapeutic intervention with the use of Milton Erickson's attitude to time and the unconscious, the paper then moves on to a clinical example, where treatment consisted of an assessment and five sessions. Here the practice of not interpreting the transference is challenged, along with an exploration of the concept of transference to the organization and the use of pre-treatment ‘maternal reverie’ associations. Using the combination of informal trance-like states with a clear focus on the ‘here and now’, the process of the therapeutic relationship is then worked with in the case material.     

How to produce personality neuroscience research with high statistical power and low additional cost

Personality neuroscience involves examining relations between cognitive or behavioral variability and neural variables like brain structure and function. Such studies have uncovered a number of fascinating associations but require large samples, which are expensive to collect. Here, we propose a system that capitalizes on neuroimaging data commonly collected for separate purposes and combines it with new behavioral data to test novel hypotheses. Specifically, we suggest that groups of researchers compile a database of structural (i.e., anatomical) and resting-state functional scans produced for other task-based investigations and pair these data with contact information for the participants who contributed the data. This contact information can then be used to collect additional cognitive, behavioral, or individual-difference data that are then reassociated with the neuroimaging data for analysis. This would allow for novel hypotheses regarding brain–behavior relations to be tested on the basis of large sample sizes (with adequate statistical power) for low additional cost. This idea can be implemented at small scales at single institutions, among a group of collaborating researchers, or perhaps even within a single lab. It can also be implemented at a large scale across institutions, although doing so would entail a number of additional complications.