This study was conducted in an effort to determine whether or not the degree of growth in practical skills, personal and social development, and knowledge of subject matter content which an adolescent demonstrates is significantly related to the assumption of leadership roles in the classroom.

The main objective of this project is to identify whether personality traits relate to the major moral categories of Deontology and the two subcategories of Teleology, namely Egoism and Utilitarianism. Chronological Age, the three personality traits of Allocentrism, Machiavellianism and Long-Term Orientation, and the moderating variable of Biological Sex were analyzed with multinomial logistic regression to predict a respondent's justification of moral philosophy across three different scenarios. Although none of the variables were significant predictors across all three scenarios, Machiavellianism significantly predicted a respondent's choice in a confidentiality scenario, and the interaction between Allocentrism and Biological Sex were partially significant predictors for a personal income tax evasion scenario, and Chronological Age was a significant predictor for a bribery scenario and a partially significant predictor for the personal income tax evasion scenario. The results suggest that personality traits can act as significant predictors for the justification of moral acts in specific situations, but the significance of predictability depends on difference contexts.

The trait approach to leadership is arguably the most venerable intellectual tradition in leadership research, with decades of great prominence followed by years of scepticism and disinterest. Despite its checkered history, recent approaches to leadership have taken a trait perspective, which is supported by evidence showing consistent associations of specific traits with leader emergence and leadership effectiveness. The purpose of this exploratory research project was to employ qualitative methodology to identify the values, personal traits and characteristics of South African business leaders who get things done. The data for this research has been obtained via in-depth exploratory interviews, with selected business leaders who have had a track record of achieving sustained financial results. The research showed that there is a core list of traits that are associated with successful South African business leaders. Key leader traits that were identified include: drive, conscientiousness, self-confidence, openness, charisma and emotional intelligence. There was less clear evidence for traits such as extroversion and cognitive ability. In addition, the environment emerged as an important modifier of a leader‟s ability to get results. While the research showed that the possession of certain key traits alone does not guarantee leadership success, there was sufficient evidence to show that effective leaders are different from others in certain key respects. Copyright / Dissertation (MBA)--University of Pretoria, 2010. / Gordon Institute of Business Science (GIBS) / unrestricted

Indiana University-Purdue University Indianapolis (IUPUI) / Depressed adults are at increased risk of developing atherosclerotic cardiovascular disease (CVD). However, heterogeneity in the depressed population engenders a key question: Are there subgroups of depressed adults at greater risk of developing CVD? Because other affective traits – i.e., anxiety, hostility/anger, and low trait positive affect – have also been associated with increased CVD risk, depressed adults with higher levels of these co-occurring affective traits may have an elevated risk of developing CVD. Consequently, the present study’s first aim was to examine, in depressed adults, which affective traits (depression, anxiety, hostility/anger, or low positive affect) are associated with endothelial function, a marker of cumulative CVD risk. In addition, because the other affective traits overlap with depressive symptom severity, this study’s second aim was to investigate which components of pairs of affective traits (shared versus unique) are related to endothelial function. Finally, given that the mechanisms underlying affective trait-endothelial function relationships in depressed adults are unknown, this study’s third aim was to explore traditional CVD risk status as a candidate mediator of observed relationships. To achieve these aims, I combined pre-treatment, cross-sectional data from three randomized controlled trials involving 138 depressed primary care patients with no history of clinical CVD. Assessments included validated self-report questionnaires for affective traits, brachial artery flow-mediated dilation (FMD) for endothelial function, and 10-year Framingham risk score for traditional CVD risk status. I conducted structural equation modeling (SEM) with confirmatory factor analysis to examine the relationships of interest after adjusting for age, sex, race/ethnicity, education, and baseline arterial diameter. Although the shared variance between each affective trait pair could not be modeled due to poor fit, adequate fitting models revealed that hostility/anger and the unique components of hostility/anger were associated with poorer endothelial function (standardized coefficients = -.18 and -.22, respectively). All of the other affective traits and their components (depression, anxiety, positive affect, unique depression, unique anxiety, and unique positive affect) were not related to endothelial function (all ps > .08). Traditional CVD risk status did not partially explain the relationship between the unique components of hostility/anger and endothelial function (standardized coefficient for the indirect effect = .00; p = .89). If my results are supported by future findings, it would suggest that depressed adults with hostility/anger (a) may be a subgroup of the depressed population at greater risk of developing CVD and (b) may be in need of earlier, more intense, and/or different CVD primary prevention efforts. Future studies are needed to confirm this relationship and identify underlying mechanisms.

No description available.

Invasive species are organisms whose introduction and spread in exotic ranges result in a multitude of ecological impacts. Understanding the factors that constrain the exotic distributions of invasive species is of considerable interest. Biotic associations formed with taxa in the invaded community may be particularly important in shaping invader distributions. These associations emerge from interactions between the traits of the invasive species and some subset of the traits present in the invaded community. Focusing on how organism traits influence the outcomes of biotic interactions may inform predictions of invader distributions. This kind of trait-based approach may be most easily applied to systems where invaders specialize on particular hosts because such associations imply a close correspondence between the traits of the invader and hosts. This dissertation focuses on the South American cactus moth (Cactoblastis cactorum, Lepidoptera: Pyralidae), an invasive consumer in North America whose larvae infest prickly-pear cacti (Opuntia spp.). Chapter One is a brief introduction providing background and context to the presented research. In Chapter Two, I quantify Opuntia morphological and tissue macronutrient traits hypothesized to correlate with patterns of C. cactorum host use. Tissue macronutrient traits appear important in predicting C. cactorum infestation whereas a model containing Opuntia morphological traits had poor predictive ability. Chapter Three describes a method that uses host Opuntia identity and availability to estimate habitat suitability in order to predict the North American distribution of C. cactorum. I then simulate C. cactorum dispersal relative to scenarios of habitat suitability and Opuntia availability. Chapter Four alters the model in Chapter Three so that habitat suitability for C. cactorum is determined by the availability of trait-based groupings of Opuntia hosts. I then simulate C. cactorum dispersal via a different method from that described in Chapter Three. In Chapters Three and Four, I evaluate the degree of similarity among model predictions and the relative contribution of modeling constraints in generating variation in this similarity. Chapters Three and Four predictions were most affected by estimates of abiotic suitability and dispersal constraints, respectively. Chapter Five is a short summary of my results and a discussion of their more general applicability.

This qualitative study is an exploration of advanced meditators' understandings of how the personal traits developed through meditation have influenced their relationships. The term meditation refers to self-regulation practices that train attention and awareness. A "meditative trait" refers to the lasting effects in sensory, cognitive and self-referential awareness that continue whether or not the practitioner is actively engaged in meditation. These traits may have some influence on meditators' close relationships, but there has been little research of this effect to date. Seven participants were interviewed about their experiences of meditative traits, and how they have seen these traits affect their relationships. The meditative traits that the participants identified were (1) awareness of body sensations and emotions; (2) disidentification from emotions and thoughts; (3) acceptance of situations, oneself, and others; and (4) compassion and loving kindness for oneself and others. The relational effects of these traits were (1) less reactivity in relationships, (2) greater freedom and safety for the participants and the others with whom they are in relationship, (3) a new understanding of the nature of connection between people, which included an awareness of the unity and separation that exists among people, and a deepened experience of intimacy and independence within relationships. Also included are a discussion of the connections between these themes and the existing literature, the strengths and limitations of this study, and the implications for future research and family therapy practice. / Master of Science

No / If the face is a window to the soul, then the smile is the light that reflects from the soul. The face conveys much information about a person, be it the identity, gender, feelings or even the thought process, e.g. [10, 13–15]. Since the smile is one of the most complex facial expressions, it is of no surprise that it contains much personality traits and other information about the individual.

<p>Sperm competition, the contest between sperm from rival males for fertilizations, is an important evolutionary force shaping sperm characteristics. Theory predicts that males experiencing elevated levels of sperm competition will invest more in sperm number, size and speed. While broad support exists for the idea that elevations in sperm competition lead to increased investment in sperm production, there is mixed support for the role of sperm competition in shaping sperm size and swimming speed. In this thesis, using a combination of within-species and comparative studies, I describe how sperm competition has influenced sperm traits in fishes and critically test a number of predictions from sperm competition theory. In the marine plainfin midshipman fish (Porichthys notatus) and the fresh-water shell brooding cichlid Telmatochromis vittatus, I show that the males who experience the highest level of sperm competition had faster but not longer sperm. Instead, selection appears to have acted on sperm energetics, increasing energy production to drive sperm movement in males who experience more intense levels of sperm competition. In a comparative study using Tanganyikan cichlids, I show that males in species experiencing high levels of sperm competition (i.e. promiscuous species) had both longer and faster sperm than males of closely related species unlikely to experience sperm competition (i.e. monogamous species). I also uncovered a predicted but previously inadequately tested relationship between sperm size and speed. This relationship holds across, but not within, species and I discuss possible explanations for differences between and within species. Finally, I used directional tests of trait evolution to assess how selection acts to increase sperm swimming speed and provide evidence that the evolution of fast swimming sperm preceded the evolution of long sperm across cichlid fishes. Together, the results of this thesis show that spenn competition promotes the evolution of faster swimming spenn in fishes and highlights the importance of sperm energetics in detennining the competitive success of ejaculates.</p> / Thesis / Doctor of Philosophy (PhD)

This dissertation examines human mobility and population interactions at the Imperial Roman (ca. 1st–3rd c. CE) sites of Isola Sacra (SCR) at Portus, Velia in the Cilento of Italy, and Rue Jacques Brel Necropolis (JBR) in Saintes, France. Isotopes of oxygen (18Oc) and strontium (87Sr/86Sr) are used to assess instances of human mobility from the enamel of second molars (M2), providing a gauge of movement after age ~7–8 years. Nonmetric traits are employed in conjunction with isotopic perspectives to examine the nature of biological affinities and phenetic divergence between these three sites. Isotopic results of this study indicate that a significant number of individuals, including females and children, were mobile towards the sites at which they were ultimately interred, with the highest estimates of mobility provided by 18Oc seeing rates between 25%–38% across the three sites. 87Sr/86Sr results provided lower estimates of mobility ranging from zero cases at Velia to 30% at JBR, while combined 18Oc and 87Sr/86Sr analyses provided the lowest estimates of mobility ranging from zero cases at Velia to 20% at JBR. Such results suggest that a combined isotope approach may not necessarily increase the degree of mobility discrimination, bringing into question issues of regional homogeneity and overlap in 18Oc and 87Sr/86Sr values for the regions examined. A further examination of 18Oc variation in M1 vs. M2 vs. M3 for a sub-sample of 20 individuals indicates that childhood mobility was taking place at Portus. Nonmetric trait analysis provides insight to the nature of biological population similarity and divergence. Across the three sites SCR is the most similar to JBR and Velia, while Velia and JBR are the most dissimilar. The nature of these similarities suggests that overall the biological background of the people interred at JBR, SCR, and Velia is similar, but with unique regional phenetic differences indicating distinct biological populations at all three sites. Using these multiple lines of evidence this dissertation emphasizes a significant degree of mobility and population heterogeneity across the Roman landscape. It is evident from the research findings presented here that with the expanding Roman empire mobility and population interaction remained staples of Roman life. / Dissertation / Doctor of Philosophy (PhD)