Nanoscale inclusions in the phonon glass thermoelectric material Zn4Sb3

We have investigated the thermoelectric material Zn₄Sb₃ using transmission electron microscopy (TEM). Nanoscale inclusions with a diameter of about 10 nm were observed, constituting on the order of 1% by volume of the material. Studies using energy filtered imaging, electron diffraction, and high-angle annular dark-field STEM indicate that the inclusions consist of Zn. These inclusions are expected to scatter the medium and long-wavelength phonons effectively, thus contributing to phonon glass behavior which results in the exceptionally low thermal conductivity for this thermoelectric material.     

Theological Implications of Young Earth Creationism and Intelligent Design: Emerging Tendencies of Scientism and Agnosticism

Abstract

Creationism is a worldview that does not accept the undirected formation and development of life but requires intelligent (supernatural) intervention. We analyzed texts representing Young Earth creationism (YEC) and intelligent design (ID) for their theological content and implications by assessing their position in central issues of systematic theology. YEC proponents emphasize the young age of the Earth and the necessity of literal interpretation of Genesis as prerequisites for the Fall and redemption. ID accepts the geological age of the planet, but requires intervention during evolution. YEC maintained the traditional characteristics of the Christian God (omnipotence, omniscience, benevolence), while some ID authors refused to speculate on the nature of the alleged designer. YEC authors utilized reinterpretation of scientific data as evidence for creation and to legitimize their belief in the historicity of Genesis. This could be regarded a form of scientism. YEC theodicy concentrated on the Fall as the cause of evil and the eschatological resolution of suffering. In contrast, ID proponents attempted to solve theodicy by compensated benefits of, e.g., pain. ID did not take a clear stand regarding salvation and ecclesiology, but YEC authors considered the acceptance of evolutionary theory and Christian faith to be mostly inconsistent. YEC doctrine differed from major Christian denominations by accepting scientific evidence as a proof for the historicity of Genesis and showed signs of exclusivity regarding evolutionary proponents. In ID, no satisfactory theodicy could be observed and some ID theorists could be classified as agnostics because of doubting the identity of the designer and by limiting God's omnipotence and benevolence. Both YEC and ID demonized evolutionary theory and its proponents. Creationism seems to be on its way to becoming a new kind of denomination or an emerging novel religion.     

Priming the mental time-line: effects of modality and processing mode

The notion of a mental time-line (i.e., past corresponds to left and future corresponds to right) supports the conceptual metaphor view assuming that abstract concepts like “time” are grounded in cognitively more accessible concepts like “space.” In five experiments, we further investigated the relationship between temporal and spatial representations and examined whether or not the spatial correspondents of time are unintentionally activated. We employed a priming paradigm, in which visual or auditory prime words (i.e., temporal adverbs such as yesterday, tomorrow) preceded a colored square. In all experiments, participants discriminated the color of this square by responding with the left or the right hand. Although the temporal reference of the priming adverb was task irrelevant in Experiment 1, visually presented primes facilitated responses to the square in correspondence with the direction of the mental time-line. This priming effect was absent in Experiments 2, 3, and 5, in which the primes were presented auditorily and the temporal reference of the words could be ignored. The effect, however, emerged when attention was oriented to the temporal content of the auditory prime words in Experiment 4. The results suggest that task demands differentially modulate the activation of the mental time-line within the visual and auditory modality and support a flexible association between conceptual codes.     

Protective effect of supportive family relationships and the influence of stressful life events on adolescent adjustment

Abstract

The purpose of this study was to determine the association between the occurrence of stressful life events and internalizing and externalizing problems, and to analyze longitudinally buffering effects of supportive family relationships. To this end, 100 Spanish adolescents were studied twice, when they were in mid-adolescence (15–16 years) and two years later. They completed questionnaires regarding stressful life events, family relationships, and adolescent adjustment. Results showed that high quality parent-adolescent relationships protected boys and girls against the negative consequences of stressful life events on externalizing, but not internalizing, symptoms. The adolescents who enjoyed good relationships with their parents in mid-adolescence did not increase their externalizing problems in late adolescence as consequence of the occurrence of stressful events. However, these stressors did lead to an increase in the number of externalizing problems when the family relationships were of a middle or low quality. These results highlight the important role that supportive family relationships play in the behavioral adjustment of adolescents, protecting them against some negative consequences of stressful life events, and suggest the relevance of supporting parents through resources such as parent education in order to help them to improve their relationships with their adolescents.     

The Use of Mental Health Services Among Victims of Partner Violence on College Campuses

The present study investigated the relationship between past victimization of different types of intimate partner violence (IPV; physical, psychological, and sexual) and the likelihood of using mental health services. Results indicate 86% of participants reported experiencing some form of IPV, but only 16% of those victims used mental health services to address emotional problems. The participants reported embarrassment, expense, ineffectiveness, and social stigma as the most prominent barriers to seeking help from a mental health professional. The study also found that participants who experienced physical and psychological IPV, but not sexual IPV, reported using mental health services. Sexual IPV may elicit different barriers in help-seeking behaviors. Implications for college IPV prevention programs and mental health services are discussed.     

Crossnational deviance in the workplace: Diverging impact of organizational commitment in Canada and Belgium

Using a self-report questionnaire from the aggressor's point of view, this study contrasted employees' frustration, perception of procedural justice, organizational commitment, and their relationships to interpersonal deviance in Canada and Belgium. Significant main effects were found in both countries for frustration and procedural justice on psychological and physical violence. Moreover, hierarchical regression analyses revealed significant interactions of country by normative and continuance commitment in interpersonal deviance, indicating the unique patterns relationships in Canada and Belgium. Hofstede's model of cultural dimensions was used to discuss the results.     

Inattentional blindness for negative relationships in human causal learning

The present study focuses on the effect of selective attention on causal learning. Three effects of the level of attention to predictive symptoms in positive and negative contingency learning tasks are reported. First, participants accurately detected a positive relationship between an incidental cue and a contingent outcome, although judgements were slightly lower than those for the attended cue. Second, participants were unable to detect negative relationships between incidental cues and outcomes, which suggests a major role of selective attention in this type of learning. Third, participants retrieved the frequency of each trial type more accurately in the attended conditions than in the incidental conditions. These findings show how attention guides and constrains human causal learning and reveal an inattentional blindness effect for negative contingency learning.     

Peripheral spatial cues modulate spatial congruency effects: Analysing the “locus” of the cueing modulation

The spatial Stroop effect (slower left/right responses to left/right pointing arrows when they appear at spatially incongruent than at congruent locations) has often been used to examine the processing of irrelevant spatial information. We present data from two experiments in which the magnitude of such location-based interference is drastically reduced when the location of the arrow is precued by a spatial noninformative cue. The main aim of the present study was to clarify whether such modulation takes place at perceptual or at response-related stages of processing. First, we manipulated the spatial compatibility between the direction of the arrow and the location of the response so that each subject would respond with spatially compatible vs. incompatible key presses for each half of the experiment. We found that such manipulation did not have any effect on the standard reduction of the congruency effect by peripheral cues. In a second experiment, subjects made left/right key presses to directional arrows pointing bottom/up, which could appear equally often at left/right/bottom/up locations. In cued trials, we found a reduction of the congruency effect on the vertical axis (stimulus location-direction congruency), whereas congruency was unaffected by cueing in targets presented on the horizontal axis (stimulus-response location congruency). According to these results, we conclude that spatial noninformative cues modulate spatial Stroop interference by reducing the conflict between stimulus dimensions at perceptual- rather than motor-related stages of processing.     

Parents' structuring of children's daily lives in relation to the quality and stability of children's friendships

This study focused on the implications of parents' structuring of their children's home lives for the friendships of their children. Participants were 224 elementary‐school children (108 girls and 116 boys) from four grade levels in two schools in Aix‐en‐Provence, France. Most of the families were of middle or high socio‐economic status. The participating children were seen twice during the same school year in order to assess the stability of their friendship choices and the quality of their friendships. We used Lautrey's (1989) questionnaire in order to assess the parents' styles in the structuring of family life and related child‐rearing practice. This questionnaire delineates three structuring styles: 1) rigid, characterized by considerable imposition of routines with little leeway for exceptional circumstances; 2) flexible, in which established routines can be modified as circumstances dictate; and 3) laissez‐faire, characterized by an absence of predictability and routine. We measured friendship quality by means of Friendship Quality Scale developed by Bukowski, Hoza, and Boivin (1989). This scale consists of 23 items representing five dimensions: companionship, help, security, closeness and conflict. This tool was designed to elicit children's perceptions of a specific relationship with a friend. Results indicated a significant link between parenting style and both of the dimensions of child friendship we studied. Children from homes characterized by a laissez‐faire style of parenting have friendships with more positive features than children from homes with flexible or rigid styles. We also found that friendships were generally less stable and rated as less positive than in similar studies conducted in other countries.