Absence of photodegradation in amorphous chalcogenide films with a narrow optical bandgap

The time-dependent change in photocurrent during illumination has been studied in amorphous arsenic tritelluride (a-As Te ), which is an amorphous 2 3 chalcogenide material with a narrow optical bandgap. No photodegradation in the photocurrent is observed in this material, although photodegradation occurs in most wide-bandgap amorphous chalcogenides.     

Effects of stimulus synchrony on mechanisms of perceptual organization

When neurons adopt a synchronized, oscillatory response to stimulus Gestalten, the phase of those oscillations almost always varies relative to stimulus activity. This has been taken to indicate that form-coding mechanisms are synchronized by internal timing mechanisms, and/or may be sensitive to stimulus activity only via motion detectors. This proposal is problematic for interpreting recent demonstrations of the effects of stimulus synchrony particularly when stimuli are stationary. Here we offer an account of stimulus-driven synchronization supported by evidence that segmentation by stimulus synchrony can be relatively insensitive to explicit motion signals. The argument is made that qualitative similarities between the effects of phase-independent and phase-locked oscillations in the EEG, the effects of phase synchronization at the cellular level and evidence for phase-enhanced stimulus grouping should be considered as functionally equivalent. This argument emphasizes the flexibility of temporal synchrony as a code for perceptual organization.     

Can religious beliefs combat negative peer influence during adolescence?

The purpose of this study was to identify religiosity dimensions that might be efficacious in helping adolescents combat negative peer influence. In past studies, the protective elements of religiosity were small to non-existent once peer influence was considered. However, peer influence can take many forms and the relation between susceptibility to negative peer influence and religious beliefs is not clear. Two hundred and twenty high school students were surveyed on several dimensions of religiosity via the Attitude to Christianity Inventory, different forms of peer influence (i.e., peer conformity and perceptions of peer behaviours) and their own pro- and anti-social conduct. Through hierarchical regression analyses some religiosity dimensions (i.e., the Bible and social justice) were found to be more protective than others in predicting conduct in the context of peer conformity. Implications for intervention were addressed.     

Mattering: Empirical Validation of a Social-Psychological Concept

Mattering is the extent to which we make a difference in the world around us. People matter simply because: others attend to them (awareness), invest themselves in them (importance), or look to them for resources (reliance). We construct and validate a mattering index, using confirmatory factor analysis. We establish the discriminant validity of the mattering index, using self-consciousness, self-esteem, self-monitoring, alienation, and perceived social support. Finally, we discuss the potential importance of mattering as a dimension of the self-concept.     

Coping with Crises: An Examination of the Impact of Traumatic Events on Religious Beliefs

The impact of traumatic events on empirical and metaphysical assumptions was examined, by comparing assumptions of a group of 25 persons who had recently experienced a major stressor with assumptions of a group of 25 persons who had not had such an experience. Each group was composed of 22 women and 3 men, with a mean age of 20 years. Participants completed written measures assessing level of adjustment, empirical world assumptions, religious motivation, and religious and spiritual experiences. Naturalistic interviews were conducted with the trauma group. The trauma group obtained significantly higher scores on symptoms of psychological distress but did not differ in evaluations of the empirical world as predictable, safe, or controllable. Interviews suggested that the metaphysical assumptions were not challenged by trauma; rather, they provided a framework for understanding and coping with trauma.     

God Give Me Strength: Exploring Prayer as Self-Disclosure

The current project was designed to examine the contention that written prayers about difficult life events function as self-disclosure to God and are structurally and effectively the same as other forms of written self-disclosure, at least in the short term. Over four writing sessions, 155 participants either wrote about mundane experiences (the control group) or wrote narratives about traumatic or stressful life events that were targeted at no one, targeted at a person of their choice, or construed as prayers to God. The results indicate that written prayers are lexically similar to the other two types of written narratives and distinct from the control group. Furthermore, the immediate effects of trauma writing on mood and physical well-being were similar as well. These findings have potentially important implications for understanding the relationship between personal prayer and a variety of health outcomes.     

Letters

Jungians as Shamans, Theologians, Clinicians, and Scientists     

The effects of family, school, and classroom ecologies on changes in children's social competence and emotional and behavioral problems in first grade

This study tested the independent and interactive influences of classroom (concentrations of peer prosocial behaviors and victimization), family (household moves, mothers' education), and school (proportion of students receiving income assistance) ecologies on changes in children's social competence (e.g., interpersonal skills, leadership abilities), emotional problems (e.g., anxious, withdrawn behaviors), and behavioral problems (e.g., disruptiveness, aggressiveness) in first grade. Higher classroom concentrations of prosocial behaviors and victimization predicted increases in social competence, and greater school disadvantage predicted decreases. Multiple household moves and greater school disadvantage predicted increases in behavioral problems. Multiple household moves and low levels of mothers' education predicted increases in emotional problems for children in classrooms with few prosocial behaviors. Greater school disadvantage predicted increases in emotional problems for children in classrooms with low prosocial behaviors and high victimization. Policy implications of these findings are considered.     

Friendships of aggressive youth: considering the influences of being disliked and of being perceived as popular

Past research provides conflicting evidence regarding whether aggressive youth have problems in the domain of friendship. The current study tested whether being disliked by peers exacerbates the negative effects of aggression on friendship and whether being perceived as popular by peers mitigates these damaging effects. Participants were 607 third-, fifth-, seventh-, and ninth-grade students. Support for the hypothesis that being disliked or being perceived as popular would moderate relations between aggression and friendship adjustment was found for the association between relational aggression and friendship conflict. Specifically, relational aggression was associated with having conflictual friendships for youth who were disliked but not for youth who were perceived as popular. In addition, similarity between friends was found in terms of how aggressive youth were as well as in terms of how disliked they were and how popular they were perceived to be. Implications for the well-being and development of aggressive youth are discussed.     

The role of oculomotor information in the learning of sequential aiming movements

With their eyes initially on either the home, midline, or final end position, 30 participants practiced a 2-target aiming movement. After 120 acquisition trials, participants performed a retention test and were then transferred to each of the other 2 eye conditions. During acquisition, all groups improved over practice, but the home group showed the greatest improvement. The temporal improvement was most pronounced in the times spent after peak velocity. Retention and transfer tests indicated that participants performed best under eye-movement conditions that were the same as the 1 they had practiced in. There was also positive transfer of training between conditions in which the oculomotor information was similar. Thus, to optimize learning, one should practice under the same afferent and oculomotor conditions that will be required for the final performance.