La dispersion est un trait d'histoire de vie clé pour les processus écologiques et évolutifs dans les populations naturelles. Les dernières recherches se sont notamment focalisées sur les corrélations entre traits comportementaux et la dispersion, ceci afin de mettre en évidence des syndromes comportementaux de dispersion, tout en démontrant la base génétique de la dispersion. Les dispersants ne seraient donc pas une part aléatoire d'une population, mais des individus montrant des stratégies particulières qui augmenteraient leur chances de succès. Cette thèse s'est orientée vers trois objectifs de recherche majeurs. Le premier est la mise en évidence d'une base génétique de la probabilité de disperser dans une population fragmentée de gobe-mouches à collier Ficedula albicollis. Les résultats nous ont montré, au-delà de l'estimation de la base génétique de la dispersion, une distribution spatiale non aléatoire de l'apparentement dans cette population, qui pourrait être dû à des effets génétiques sur les règles de décision de choix de l'habitat. Le deuxième s'intéresse à la corrélation phénotypique et génétique entre le comportement de dispersion natale et le comportement de défense du nid, chez le martinet alpin Tachymarpis melba. Nous avons montré que la dispersion natale et le comportement de défense du nid sont négativement corrélés au niveau phénotypique mais aussi génétique dans ces populations. Enfin, le troisième nous à conduit à tester l'existence de syndromes comportementaux de dispersion, c'est-à-dire si les dispersants présentent un profil comportemental particulier, leur permettant en particulier de coloniser de nouveaux sites, chez le gobe-mouche à collier / Dispersal is a key like history trait for ecological and evolutionary processes in wild population. The last researching particularly focused on the correlation between behavioural trait and dispersal, in order to emphasize the existence of behavioural syndromes of dispersal, and on the estimation of the genetic basis of the dispersal behaviour. Dispersant individuals could not be a random part of the population, but individuals showing particular strategies, that help them to succeed in their dispersal attempt. This thesis has three main aims of research. The first is to show a genetic basis of the dispersal propensity in a fragmented population of collared flycatchers (Ficedulla albicollis). We shown not only the genetic bases of the dispersal, but also a non-random spatial distribution of relationship between individuals in this population, that might be due to genetic effects on the decision rules of habitat choice in this population. The second aim concerns phenotypic and genetic correlation between the natal dispersal and a behavioural trait, the nest-defense behaviour, in the alpin swift (Tachymarpis melba). We shown that natal dispersal and nest-defense behaviour are negatively correlated at a phenotypic level, but also at a genetic level in theses populations. Finally, the third aim attempt to test the existence of behavioural syndrome of dispersal, that is if dispersant individuals have a particular behavioural profile, which enable them to colonize new sites, in the collared flycatcher

The purpose of this study is to explore the mechanisms of how feedback from supervisor affects innovative work behavior among local government employees in Korea. Another purpose of this study is to explore the mediating roles of trust in supervisor and affective commitment, and the moderating role of risk-taking climate, using various theories, such as organizational support theory, social exchange theory, intrinsic motivation theory, and psychological climate theory. The results from a cross-sectional study based on a sample of 1,699 local government employees from 65 local governments find that feedback from supervisor has a significant direct effect on innovative work behavior. Trust in supervisor and affective commitment significantly mediate the relationship between feedback from supervisor and innovative work behavior. Feedback from supervisor has an indirect effect on innovative work behavior through its influence on trust in supervisor and affective commitment in serial. Risk-taking climate significantly moderates the relationship between affective commitment and innovative work behavior. Lastly, the results of moderated mediation model find that the conditional effects are significant at high levels of the moderator (at one standard deviation above the mean) and at the mean, while the conditional effect was not significant at low levels of moderator (at one standard deviation below the mean) for both two indirect effect paths (feedback from supervisor --> affective commitment --> innovative work behavior, and feedback from supervisor --> trust in supervisor --> affective commitment --> innovative work behavior).

The New Zealand economy in the period up to 2006 provides an opportunity to assess an alternative disclosure based approach to the prudential regulation of deposittakers, in a market free of many of the distortions which arise from traditional regulatory schemes. The overall objective of this research has been to assess the effectiveness of the prudential regulation of New Zealand financial institutions and judge if the country is well served by it. Analysis of New Zealand’s registered bank sector suggests public disclosure adds value to New Zealand’s financial system. However, the significant relationship found between disclosure risk indicators and bank risk premiums was not as a result of market discipline, rather it is argued self-discipline was the mechanism, demonstrating bank management and directors are discharging their duties in a prudent manner. A feature of the New Zealand disclosure regime for banks is the significant responsibilities placed on bank directors; directors are then held accountable for their actions. Findings in the management of banks were in contrast to non-bank deposittakers, where disclosure was judged to be ineffective, and of no practical use due to its poor quality. The management of non-bank deposit-takers appeared to receive very little oversight from depositors, their trustees or official agencies. As a result, many appear to have managed their institution in their own interests, with little consideration given to other stakeholders. Failures which occurred in NBDTs from 2006 resulted from deficiencies in the prudential regulation of these deposit-takers, demonstrating the severity of asymmetric information and moral hazard problems which can arise if prudential regulation is not correctly designed and management interests are not aligned with other stakeholders. The New Zealand disclosure regime will never guarantee a bank will not fail, nor should it try to do so, but it should assist the functioning of a sound and efficient financial system. To this end, it is recommended that the Reserve Bank, in re-designing the regulatory framework for NBDTs, hold the management and directors of NBDTs similarly accountable, while also incorporating regular disclosure and minimum prudential standards. Governments have an important role to play in ensuring the financial system is efficient.

The overall aim of the present thesis is to contribute to the knowledge in young people´s experiences, thoughts and norms regarding sexually transmitted infections (STI) and sexual risk-taking. The specific aims are two-fold. The first aim is to explain and understand young Swedish men and women´s lived experience of an STI, in this case genital warts (I, II). The second is to explain and understand the values and attitudes of young men and women to sexual risk-taking (III) in relation to perceptions of gender (IV).   The theoretical perspectives are a reflective lifeworld approach, hermeneutic and gender perspectives. The thesis is based on individual interviews (I, II) and focus groups (III, IV).  The results show that a young person infected by an STI, will experience encounters at different levels. A person with an STI is forced to meet him/herself and their own prejudices. Loss of innocence is highly significant and symbolic for women, while other person´s attitudes are more important for men (I, II). Also, being a disease carrier is of great significance, which has an impact on their views of future meaningful relationships (II).      Sexual risk-taking, such as it was expressed in the focus groups with young people, revealed a pattern that is described as a ‘game’. In that game, a dialogue might feel more intimate than intercourse. These teenagers often view their one night stand partners as objects, as opposed to love relationships where they are viewed as subjects, i.e. persons to be cared for. Engaging in sexual risk-taking often starts at a club where these teenagers pretend that they are spontaneous (III). This game is further illuminated in a secondary analysis with a gender perspective. There are frequent misunderstandings between young men and women that are based on gender constructions, which derive from lack of communication. Hence, they have to take part in a balancing act while shaping their sexual identity and trying to maintain their self-esteem. For these young women, this also concerns not getting a bad reputation. In this act of balance, it is difficult to discuss sexuality and how to protect one’s sexual health (IV). The discussion emphasizes that a professional caring dialogue with young people about STI: s and sexual-risk taking must have reference in the young person´s own reality. Thus, professional health care workers who meet a young person infected with an STI appear to face a challenging task. This involves helping reduce anxiety by defusing the situation, and at the same time to make the person understand the importance of using a condom in order to prevent STI: s.

The following will explore the operation of evolved mechanisms connected with cycling fertility. I first address strategic shifts in women’s behavior near ovulation and hypothesize that certain behavioral shifts at high fertility reflect an increase in women’s intrasexual competition tactics when conception is most probable. A simulated, online shopping program was designed to track women’s spending patterns (at varying budgets) on clothing, undergarments, shoes, jewelry, and other fashion accessories – items that likely enhance a woman’s ability to attract a high quality mate and effectively compete with same-sex rivals. Additionally, a laboratory task was created to assess women’s likelihood of incurring a risk to appear more attractive and have access to more resources than same-sex peers. Studies 1-3 will explore the effect of fertility on women’s consumer behavior and the influence of same-sex peers on fertility-induced motivation to appear more attractive. Study 4 will further examine fertility-induced shifts in women’s intrasexual competitiveness by measuring context-specific risks women take to gain a positional advantage over same-sex peers. The current studies present new data that provide novel insights into human adaptations to cycling fertility and highlight important decision-making processes that guide women’s social competition within a variety of domains. / text

我國在民國102年復徵證券交易所得稅，其本質屬於資本利得稅，本文欲探究資本利得稅對資產選擇之影響，再進一步將閉鎖效果納入資產選擇模型，討論課稅實現原則下，資本利得稅的稅率對資產選擇的影響。 本文假設兩項資產，分別為無風險性資產與風險性資產，發現在資本利得稅、資本損失可完全扣抵的情況下，政府擔任分散風險的角色，財富的風險性下跌，代表性個人增加風險性資產持有份額。納入閉鎖效果討論課徵資本利得稅下的資產選擇，設立兩期模型，代表性個人分配財富於無風險資產與風險性資產。若要代表性個人在第二期轉換投資組合，則代表性個人將要求新投資組合之報酬高於原資產之報酬加上處分原資產所產生之資本利得稅，而代表性個人可透過改變風險性資產持有比例調整新資產組合之報酬。研究發現，新投資組合的風險性資產持有比例受到原資產之資本利得稅率影響，原資產的稅率越高，則新投資組合的風險性資產持有比例越大，主因稅率越高，閉鎖效果的強度越強，因此若代表性個人要轉換資產的話，可透過增加風險性資產持有比例來增加新投資組合的預期報酬，亦表示代表性個人之風險承擔意願增加。

Alcohol use disorder is a worldwide public health problem and is a disorder with substantial individual variation. There are suggested links between various behavioral traits, comorbid psychiatric diseases and excessive alcohol consumption. Moreover, the endogenous opioid system is involved in alcohol reward and reinforcement, and implicated in the action of alcohol. However, less is known about the complex associations between individual differences in behavior, alcohol consumption, pharmacotherapy response and related neurochemical mechanisms. Experimental animal models are critical for understanding the neurobiological underpinnings of alcohol use disorder. The overall aims of this thesis were: i) to study the association between behavior and voluntary alcohol intake in outbred rats; ii) to study the association of voluntary alcohol intake, behavior, opioid receptor density and response to naltrexone; and iii) to obtain detailed behavioral characterizations of the animals on the basis of their voluntary alcohol intake. The results revealed that the multivariate concentric square fieldTM (MCSF) test was a complementary method for understanding mechanisms underlying various mental states. The MCSF broadened the perspective on risk-related behaviors, including aspects of risk assessment. Individual differences in alcohol intake using the modified intermittent access paradigm enabled analyses of drinking patterns in high and low alcohol-drinking rats. There was an alcohol deprivation effect in high-drinking animals only. The behavior profiling of high alcohol drinking- rats before and after alcohol access suggested that this subgroup was consuming alcohol for its anxiolytic properties. Long-lasting changes were found in the mu and the delta opioid receptors after long-term, intermittent voluntary alcohol intake; some of these changes are in line with findings in humans. The voluntary alcohol consumption and the concomitant response to naltrexone were different for Wistar rats from different suppliers. Moreover, the Rcc Wistar rats may be more suitable for studies of alcohol use disorders due to increasing alcohol intake and the presence of a high-drinking subpopulation with increasing alcohol intake over time. The high-drinking subpopulation showed pronounced effects of naltrexone on alcohol intake. In conclusion, studies of individual differences increase understanding of variability in behavior, pharmacotherapy response and factors involved in vulnerability of alcohol use disorders.

A growing body of research has explored the relationship between attachment styles and sexual behaviour, although these two systems, along with care-giving, are theorized to constitute romantic love (Fraley & Shaver, 2000; Hazan & Shaver, 1987). The purpose of this study was to examine the relationship between attachment styles and risky sexual behaviour in young adults. A secondary aim was to explore the relationship between particularly risky sexual behaviours and participants’ membership to an attachment dimension. In addition to this, the role of self-esteem as a moderating effect on risky sexual behaviour and attachment dimension was examined. A questionnaire survey was administered to a convenience sample of 211 undergraduate university students with ages ranging from 17 to 24 years. The gender make up of this sample constituted 80 males (37.9%) and 131 Females (62.1%). The Past and Present Sexual History Questionnaire was used to measure risky sexual behaviour. Attachment dimensions were calculated by means of the Adult Attachment Scale (AAS) and the Rosenberg Self-Esteem Scale (RSE) was used to determined participants self-esteem. / Thesis (M.Soc.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2008.

Co-infection with a sexually transmitted infection (STI) is both an indicator of behavioural risk, as well as an indicator of increased risk for infection with HIV. This is a cross-sectional, descriptive study. The overall aim of the study is to profile the demographic data, health seeking behaviour, sexual risk behaviour and HIV awareness and willingness to test in a sample of STI clinic attendees in order to inform intervention programmes aimed at reducing the burden of disease in this group, thereby reducing HIV risk. It is hypothesised that those individuals who are poorly informed about key prevention information (particularly regarding the biological susceptibility to HIV infection when co-infected with an STI), who are poorly motivated due to poor attitudes towards or lack of social norms in favour of prevention behaviour, and who lack some key behaviour skills (like skills for identifying STIs early, or negotiating safer sexual practises) will be less likely to be able to initiate and maintain specific prevention behaviours. Data are collected using a structured questionnaire and analysed in relation to the Information-Motivation Behavioural Skills (IMB) model of HIV prevention behaviour. This model was specifically developed to provide a conceptual framework for the design, implementation and assessment of targeted and empirically focussed interventions to change sexual risk behaviour in HIV. Components of the IMB model that are identified as important in contributing to risk of infection in this group are identified. Finally, recommendations regarding the form and content of an intervention in this group are made. The study concludes that STI clinics may be excellent environments within which to implement HIV risk reduction pehavioural interventions which currently may be missed opportunities. / Thesis (M.A.)-University of KwaZulu-Natal, Pietermaritzburg, 2004.

Research on risk and resilience related to behaviour and poor health outcomes among young people consistently indicates the need to take greater cognisance of social and environmental factors. This is particularly true of research in developing countries. In South Africa, there is a paucity of research on these issues. This study attempts to examine risk and protective factors, as well as coping style of young South Africans at the University of Natal, Pietermaritzburg. Environmental risk and protective factors measured were related to family, peers, and financial support. Categories of risk behaviour and poor health outcomes measured were substance use, sexual behaviour, general risk behaviour and depression. Broad-based questionnaires were sent to 2000 randomly selected students aged between 18 and 24 years old, and completed by 678 students. Results indicated that there was a trend towards gender equalisation in levels of risk and poor health outcomes- that there were significant relationships between many risk behaviours and poor health outcomes- that coping styles were correlated with risk behaviour and poor health outcomes in the expected direction (avoidance coping correlated positively and approach coping correlated negatively with risk behaviour, poor health outcomes and environmental risk factors)- and that environmental risk factors (low family, peer, and financial support) were associated with high levels of risk behaviour and poor health outcomes including sexual risks and depression. A contextual model was employed to explain the importance of environmental factors and coping styles in the promotion of health and wellbeing. / Thesis (M.A.)-University of Natal, Pietermaritzburg, 2001.