Do Addicts Behave Rationally?

Addicts, Rational Behavior

CW and pulsed electrically detected magnetic resonance spectroscopy at 263 GHz/12 T on operating amorphous silicon solar cells

Here we describe a new high frequency/high field continuous wave and pulsed electrically detected magnetic resonance (CW EDMR and pEDMR) setup, operating at 263 GHz and resonance fields between 0 and 12 T. Spin dependent transport in illuminated hydrogenated amorphous silicon p-i-n solar cells at 5 K and 90 K was studied by in operando 263 GHz CW and pEDMR alongside with complementary X-band CW EDMR. Benefiting from the superior resolution at 263 GHz, we were able to better resolve EDMR signals originating from spin dependent hopping and recombination processes. 5 K EDMR spectra were found to be dominated by conduction and valence band tale states involved in spin dependent hopping, with additional contributions from triplet exciton states. 90 K EDMR spectra could be assigned to spin pair recombination involving conduction band tail states and dangling bonds as dominating spin dependent transport process, with additional contributions from valence band tail and triplet exciton states.Comment: 8 pages, 4 figure

Social Preferences and the Efficiency of Bilateral Exchange

Under what conditions do social preferences, such as altruism or a concern for fair outcomes, generate efficient trade? I analyze theoretically a simple bilateral exchange game: Each player sequentially takes an action that reduces his own material payoff but increases the other player’s. Each player’s preferences may depend on both his/her own material payoff and the other player’s. I identify necessary conditions and sufficient conditions on the players’ preferences for the outcome of their interaction to be Pareto efficient. The results have implications for interpreting the rotten kid theorem, gift exchange in the laboratory, and gift exchange in the field

Pretend Play and Creativity in Preschool-Aged Children: Associations and Brief Intervention

Cognitive and affective processes in play have related to measures of creativity in school-aged children. In a previous examination of these play processes in preschool-aged children with the Affect in Play Scale-Preschool version, cognitive and affective play processes related to divergent thinking. One goal of the current study was to replicate this finding and examine the relationship between pretend play and storytelling creativity in preschoolers. A second goal was to test the effectiveness of a brief play intervention. Adult-led play interventions have effectively improved play skills and related developmental skills for children with documented play deficits. However, there is a need for an empirically-based, brief play intervention for typically developing preschool-aged children. A pilot study found medium to large effect sizes for increased play skills for an intervention with preschool-aged children and their parents. The current study aimed to examine the effectiveness of the intervention without parent involvement. Forty-one typically developing children (ages 4-6 years) participated. Pretend play, divergent thinking, and creative storytelling were assessed at baseline and outcome. Children were randomly assigned to the play skills intervention, which received three 20-30 minute individual play sessions, or the active control. At baseline, results were that cognitive and affective play processes related to divergent thinking and creative storytelling. The play intervention did not significantly improve pretend play skills or creativity in the intervention group compared to the control group. Reasons for the nonsignfiicant findings for the intervention, suggestions for future refinement of the intervention, and implications for childhood development are discussed

High-resolution EPMA X-ray images of mother liquid inclusions in a Pd2Ga single crystal

During crystal growth from solution inclusions of different compositions were trapped at the rim of a Pd2Ga single crystal. Their fine-grained (< 5 mu m) internal structure demands special requirements for electron microprobe analysis, realized by low-voltage (5 keV) element mapping applying a step size of 0.138 mu m for each pixel. It can be shown, that these inclusions represent an isolated chemical system, and that crystallisation upon cooling follows the expected thermodynamic phase relations. Thus the final composition in the centre of the inclusion consists of a small-scale mixture of PdGa and Pd5Ga3 evolved out of a solid-solid decomposition of Pd5Ga4

Competencies in Training at the Graduate Student Level: Example of a Pediatric Psychology Seminar Course.

The recently developed competencies in pediatric psychology from the Society of Pediatric Psychology (SPP) Task Force on Competencies and Best Training Practices in Pediatric Psychology provide a benchmark to evaluate training program practices and student progress toward training in level-specific competency goals. Graduate-level training presents a unique challenge for addressing the breadth of competencies required in pediatric psychology while maintaining development of broader clinical psychology training goals. We describe a recurring graduate-level pediatric psychology seminar course that addresses training in a number of the competency cluster areas. The structure of the seminar, examples of classroom topics that correspond with competency cluster areas as well as benchmarks used to evaluate each student\u27s development in the competency area are provided. Specific challenges in developing and maintaining the seminar in this format are identified, and possible solutions are offered. This training format could serve as a model for established pediatric psychology programs to expand their didactic training goals or for programs without formal pediatric psychology training to address competencies outside of clinical placements

Treatment of Sleep Problems in Young Children: A Case Series Report of a Cognitive-Behavioral Play Intervention

Sleep problems and bedtime resistance are common in young children. Treatment is critical because sleep problems typically persist, and insufficient sleep is related to worse outcomes. Current behavioral treatments do not work directly with the child to reduce anxiety and distress at bedtime. Cognitive-behavioral play therapy is a treatment approach designed to teach coping skills to young children by combining cognitive-behavioral therapy with pretend play, a developmentally-appropriate intervention mode. The current case series examined the effectiveness of adding a brief cognitive-behavioral play intervention (CBPI) to parent behavior management for young children with sleep difficulties. Four children (4-6 years) received three 20-30 minute individual sessions during which the child played out stories with an advanced graduate student therapist (first author, K.F.) about a child coping with sleep problems. Each child’s parent also received a 30-minute sleep information session. Three parents returned questionnaires post-treatment. As expected, all three parents reported improvements in their child’s sleep habits, sleep anxiety, and general fears. All three parents also reported a high level of satisfaction with the treatment. These preliminary results suggest that the CBPI may be effective for decreasing anxiety and child distress when added to behavioral treatment, thus increasing the breadth of treatment approaches available for young children with sleep problems. These results are promising, although a randomized study is needed to further refine the intervention and establish the efficacy of a CBPI for treatment of sleep problems in young children

Cost-effectiveness of trastuzumab in the adjuvant treatment of early breast cancer: a model-based analysis of the HERA and FinHer trial

BACKGROUND: Routine adjuvant administration of trastuzumab (T) has been implemented in most centers, but its economic impact has not yet been well examined. METHODS: A Markov model was constructed based on clinical data of the Herceptin Adjuvant (HERA) and the Finland Herceptin (FinHer) trials. Costs from the perspective of a Swiss health care provider were calculated based on resource use. RESULTS: On the basis of HERA data, our model yielded an overall survival rate of 71.8% for the T group versus 62.8% for the control group [risk ratio (RR) = 0.87) after 10 years and 62.9% versus 52.7% (RR = 0.84) after 15 years. Cost-effectiveness resulted in 40505 Euros (EUR) per life years gained (LYG) after 10 years and 19673 EUR per LYG after 15 years. For the FinHer regimen, overall survival after 10 and 15 years resulted in 81.8% versus 66.1% (RR = 0.81) and 73.6% versus 57.0% (RR = 0.77). Costs of 8497 EUR per patient could be saved after 10 years and 9256 EUR after 15 years compared with the control group. CONCLUSION: In a long-term perspective, adjuvant T based on the HERA regimen can be considered cost-effective. The regimen used in the FinHer trial is even cost saving, but estimations are based on a single small tria

Spatial prisoner's dilemma game with volunteering in Newman-Watts small-world networks

A modified spatial prisoner's dilemma game with voluntary participation in Newman-Watts small-world networks is studied. Some reasonable ingredients are introduced to the game evolutionary dynamics: each agent in the network is a pure strategist and can only take one of three strategies (\emph {cooperator}, \emph {defector}, and \emph {loner}); its strategical transformation is associated with both the number of strategical states and the magnitude of average profits, which are adopted and acquired by its coplayers in the previous round of play; a stochastic strategy mutation is applied when it gets into the trouble of \emph {local commons} that the agent and its neighbors are in the same state and get the same average payoffs. In the case of very low temptation to defect, it is found that agents are willing to participate in the game in typical small-world region and intensive collective oscillations arise in more random region.Comment: 4 pages, 5 figure