Evidence for structural disorder in the icosahedral phase

Abstract

We report transmission electron microscopy results on quasicrystalline samples of Al–25 wt% Mn and Al-38 wt% Mn-5 wt% Si melt-spun flakes. The selected-area diffraction patterns (SADPs) from ‘off-axis’ orientations show not only sharp diffraction maxima but also a diffuse ring, invariant of sample thickness, indicating that it does not arise from amorphous surface oxide. Over-exposed SADPs taken from axial orientations also showed the weak diffuse ring. We suggest that our results indicate the presence of disordered material within the icosahedral phase. Models for the icosahedral phase which involve an assembly of icosahedral clusters inherently contain interstitial voids, which may contain disordered material. Thus our results support these models rather than those derived from space-filling filings, or multiple twinning.     

Count out your intrusions: Effects of verbal encoding on intrusive memories

Peri-traumatic information processing is thought to affect the development of intrusive trauma memories. This study aimed to replicate and improve the study by Holmes, Brewin, and Hennessy (2004, Exp. 3) on the role of peri-traumatic verbal processing in analogue traumatic intrusion development. Participants viewed an aversive film under one of three conditions: counting backwards in 3s (“verbal interference”), verbalising emotions and thoughts (“verbal enhancement”), or without an extra task. A dual-process account of PTSD would predict that verbal interference would increase intrusion frequency compared to no task, whereas verbal enhancement would lead to a decrease. In contrast, mainstream memory theory predicts a decrease in intrusion frequency from any concurrent task that diverts attention away from the trauma film. The main finding was that the verbal interference task led to a decrease in intrusive memories of the film compared to the other two conditions. This finding does not support a dual-process account of PTSD, but is in line with general theories of memory and attention.     

An Exploratory Study of the Relationship Between Mood States and Creativity Self-Perceptions

The purpose of this study was to investigate the relationship between noninduced mood state and self-perceptions of creativity. Undergraduate teacher education students (N = 287) completed 2 mood state inventories (Teasdale 100-Point Thermometer and Perception of Mood States) and a creative self-perception inventory (What Kind of Person Are You? [Khatena &; Torrance, 1976]). The group expressed overall indications of happiness and normally distributed creativity perceptions. Findings were mixed when the 5 scales of the creativity measure (i.e., Acceptance of Authority, Self-confidence, Inquisitiveness, Awareness of Others, and Disciplined Imagination) were correlated to the 6 dimensions of mood (i.e., Tension/Anxiety, Depression/Dejection, Anger/Hostility, Vigor/Activity, Fatigue/Inertia, and Confusion/Bewilderment). There was, however, some indication that positive mood was related to creative self-perception. Results are discussed and future research is suggested.     

How Personality and Reward Relate to Automobile Drivers' Judgments of Affordances Using Their Own Vehicles

Abstract

Researchers have long recognized the importance of psychological processes in motor vehicle safety, but ecological theory-based research on factors that might contribute to motor vehicle crashes has lagged. This study was designed to test factors that might influence motor vehicle drivers' judgments of passability and fit-ability affordances. In particular, the authors tested personality and behavioral reinforcement as factors that might influence automobile drivers' judgments of affordances in three tasks set at various π-numbers: driving forward through a gap, driving backward through a gap, and fitting into a parallel-parking spot. Results across two studies suggest that personality does not relate to judgment of driving environment affordances, but institution of a behavioral reward system causes drivers to judge affordances in different ways. Implications for future research and for automobile safety intervention are discussed.     

Diagnosing Organizational Innovation: Measuring the Capacity for Innovation

Organizational innovation involves reconciling many contradictions or paradoxes. Dividing the process of innovation into phases ranging from Activation to Validation and examining each phase in terms of the six Ps of creativity offers a framework for making sense of these contradictions. The Innovation Phase Assessment Instrument (IPAI) was designed to assess organizations according to such an approach. The scale was administered to 454 student volunteers and an analysis of their responses indicated that the IPAI is highly reliable and has substantial construct validity. At a practical level, it can be used for assessing the strengths/weaknesses of organizations in a differentiated way and for making recommendations for improving their capacity for innovation. It is also a source of research questions for examining creativity and innovation in an organizational context.     

Interactive-Virtual Reality (IVR) Exercise: An Examination of In-Task and Pre-to-Post Exercise Affective Changes

In this research, we examine the influence of imposed vs. self-chosen interactive/virtual reality (IVR) exercise on affect response following, as well as during, exercise. Our sample included 131 university students who were assigned to one of three 10-min conditions: (a) self-selected interactive/virtual reality (IVR) exercise, (b) externally imposed IVR exercise, or (c) regular exercise. Exercise intensity was standardized in terms of metabolic benchmarks. Mood benefits were observed pre-to-post exercise regardless of condition. During exercise, however, higher pleasure ratings were reported by participants in the self-selected IVR exercise condition. The implications of the immediate mood effects of self-selected IVR exercise are discussed.     

Academic attitudes and their antecedents

In today's competitive workplace, individuals who are best prepared will have the greatest chance of obtaining and retaining jobs. Students can better prepare by developing the maximum possible knowledge and skills during their college educations. Research has shown that attitudes and perceptual variables have significant effects on development activity in organizations. We extend that research by using structural equations modeling to examine influences on attitudes toward one's college education. We posited that Big Five personality factors influence personal growth, readiness to change, and the perceived instrumentality of a university education and that these factors influence attitudes toward education. Results supported the posited model. A better understanding of antecedents of attitudes can enhance educational intervention effectiveness.     

The power of print: Children’s trust in unexpected printed suggestions

How do children evaluate the veracity of printed text? We examined children’s handling of unexpected suggestions conveyed via print versus orally. In Experiment 1 (N = 131), 3- to 6-year-olds witnessed a speaker either read aloud an unexpected but not completely implausible printed label (e.g., fish for a bird-like animal with some fish features) or speak the label without accompanying text. Pre-readers accepted labels in both conditions. Early readers often rejected spoken labels yet accepted them in the print condition, and in Experiment 2 (N = 55) 3- to 6-year-olds continued to apply them even after the print was obscured. Early readers accept printed testimony that they reject if only spoken, and the influence of text endures even when it is no longer visible.     

The Interactive Effects of Self‐Perceptions and Job Requirements on Creative Problem Solving

Over the years, researchers have focused on ways to facilitate creativity in the workplace by looking at individual factors and organizational factors that affect employee creativity (Woodman, Sawyer, & Griffin, 1993 ). In many cases, the factors that affect creativity are examined independently. In other words, it is uncommon for researchers to look at the interaction among individual and organizational factors. In this study, it is argued that to get a true understanding of how to maximize creativity in the workplace, organizational researchers must look at the interaction between organizational factors and individual factors that affect employee creativity. More specifically, the current study looked at an individual's perceptions about his or her ability to be creative (i.e., individual factor) and perceptions of requirements for creativity in the workplace (i.e., an organizational factor). The results indicated that individuals who have a high belief about their ability to be creative (an individual factor) were most creative when they also perceived requirements for creativity in the workplace (an organizational factor). Furthermore, individuals who had low perceptions of creative ability were still able to perform creatively when they had high perceptions of requirements for creativity. This suggests that, to maximize creativity, organizations should focus on both individual and organizational factors that affect employee creativity.     

Opening up Openness to Experience: A Four‐Factor Model and Relations to Creative Achievement in the Arts and Sciences

Openness to experience is the broadest personality domain of the Big Five, including a mix of traits relating to intellectual curiosity, intellectual interests, perceived intelligence, imagination, creativity, artistic and aesthetic interests, emotional and fantasy richness, and unconventionality. Likewise, creative achievement is a broad construct, comprising creativity across the arts and sciences. The aim of this study was to clarify the relationship between openness to experience and creative achievement. Toward this aim, I factor analyzed a battery of tests of cognitive ability, working memory, Intellect, Openness, affect, and intuition among a sample of English Sixth Form students (N = 146). Four factors were revealed: explicit cognitive ability, intellectual engagement, affective engagement, and aesthetic engagement. In line with dual‐process theory, each of these four factors showed differential relations with personality, impulsivity, and creative achievement. Affective engagement and aesthetic engagement were associated with creative achievement in the arts, whereas explicit cognitive ability and intellectual engagement were associated with creative achievement in the sciences. The results suggest that the Intellectual and Openness aspects of the broader openness to experience personality domain are related to different modes of information processing and predict different forms of creative achievement.