Thesis (Ph. D.)--University of Texas at Austin, 2001. / Vita. Includes bibliographical references (leaves 79-100). Available also in a digital version from Dissertation Abstracts.

Since Bowlby (1958, cited in Bowlby, 1969) originally introduced the theory of attachment it has been written about extensively and a vast amount of research has contributed to the development of the theory. In more recent years research has focused on the possible link between attachment and psychopathology. The major aim of the present meta-analysis was to contribute to this research effort by establishing the magnitude of the effect size for the relationship between attachment security and internalizing psychopathology; and attachment security and externalizing psychopathology, in children and adolescents. Four separate meta-analyses were conducted investigating internalizing and externalizing problems in cross-sectional and prospective studies. A comprehensive literature search was conducted to identify relevant studies for inclusion in the analysis. Identified studies were assessed for eligibility according to stringent inclusion and exclusion criteria. A total of 23 studies contributing 45 effect size correlations, involving 3793 different participants were considered eligible for inclusion. Relevant information was extracted and coded from the studies before the analyses were conducted. For cross-sectional studies the mean effect size correlation for attachment security and internalizing psychopathology was r = -0.24 (k = 14; p <0.01; 95% CI = -0.31, -0.17). For attachment security and externalizing psychopathology the mean effect size was r = -0.28 (k = 16; p <0.01; 95% CI = -0.34, -0.21). In terms of prospective studies the mean effect size correlation for attachment security and internalizing psychopathology was r = -0.17 (k = 8; p = 0.01; 95% CI = -0.28, -0.04); and for externalizing psychopathology it was r = -0.09 (k = 7; p = 0.02; 95% CI = -0.16, -0.01). When attachment security and psychopathology were measured concurrently, there was evidence of a negative association for both internalizing and externalizing psychopathology. Although the magnitude of effect was smaller for prospective studies evidence was also found for the predictive validity of a lower level of attachment security in the development of both internalizing and externalizing psychopathology. Theoretical explanations for these findings are presented and the research and clinical implications are discussed in terms of the limitations of the study.

Thesis (M.Ed.(Educational Psychology))--University of Pretoria, 2008. / Includes bibliographical references.

The diploma thesis focuses on interaction between siblings in pre-school age, with the older sibling being impacted by an autistic spectrum disorder, while the younger sibling has not been diagnosed with the disorder. The theoretical part of the thesis analyses contemporary scientific findings related to this topic. It provides theoretical bases of the autistic spectrum disorder and provides information on the relationship between the siblings. An individual chapter discusses the healthy sibling and its development. The last section of the theoretical part analyses the interaction between the two siblings. Main attention is given to features which infiltrate into the relationship of the siblings and influence it. This part also examines potential methods which are to be used to improve the quality of interaction between the siblings. The empirical part consists of two researches, a quantitative one and the supplementary qualitative research. The goal of the quantitative research was to identify how certain specifics of interaction are impacted by the sincerity of problematic behavior of the sibling diagnosed with autistic spectrum disorder. The results proved a significant positive correlation between the sincerity of problematic behavior and the amount of conflicts occurring between the siblings....

In this work we address to the problems of the loan origination decision-making systems. In accordance with the basic principles of the loan origination process we considered the main rules of a clients parameters estimation, a change-point problem for the given data and a disorder moment detection problem for the real-time observations. In the first part of the work the main principles of the parameters estimation are given. Also the change-point problem is considered for the given sample in the discrete and continuous time with using the Maximum likelihood method. In the second part of the work the disorder moment detection problem for the real-time observations is considered as a disorder problem for a non-homogeneous Poisson process. The corresponding optimal stopping problem is reduced to the free-boundary problem with a complete analytical solution for the case when the intensity of defaults increases. Thereafter a scheme of the real time detection of a disorder moment is given.