published_or_final_version / Medicine / Master / Doctor of Medicine

Aim: To explore parents’ experiences when caring for a child with Attention Deficit/Hyperactivity Disorder (ADHD). The coping mechanisms employed by the parents in such a situation were also investigated. Objectives: To gain an understanding of the parents’ experiences when their child has ADHD. The factors affecting these experiences include dealing with their child’s behaviours, receiving an ADHD diagnosis, deciding on treatment and coping resources. Research Design: Through a qualitative, phenomenological approach, this study is characterized by an interpretative style with the aim of facilitating an in-depth exploration of the participants’ experiences. Subjects: A non-probability, purposive sample was used. The sample consisted of 12 parents. The only requirements for the sample were: 1. The participant must be the primary caretaker of a child who has been diagnosed with ADHD and is being treated for ADHD. 2. The participant’s child must be 18 years old or younger. Data Collection: Semi-structured, in-depth interviews were used as an instrument for collecting the required data and were devised in order to appropriately address the objectives of this study. Data Analysis: The transcripts were analyzed thematically using Interpretative Phenomenological Analysis (IPA) in order to identify relevant and common parental experiences. Lazarus and Folkman’s Transactional Theory of Stress (TTS) and Coping was utilized as a conceptual framework to help make sense of the emergent themes. Results: Participants in the present study displayed increased levels of stress and frustration when caring for a child with ADHD. The child’s difficult behaviours frequently induced a sense of incompetence in the parents and a desire to use physical punishment on the child. The participants employed various methods of coping in order to adapt to their child’s disorder. Such efforts included modifying daily routines and utilizing social support. Most of these coping efforts helped to diminish stress and anxiety and improved parent-child relationships. / Thesis (M.A.)-University of KwaZulu-Natal, Durban,2009.

This thesis tests the hypothesis proposed by Liemkuhler (1994) relating to the development of a cluster of personality styles among ADHD adolescents. Liemkuhler suggests that it is a neurobiological dysfunction, through its interaction with psychodynamic and cognitive processes that predisposes the ADHD adolescent to the development of certain personality styles. An absence of appropriate intervention and support increases the risk of these personality styles developing into clinical syndromes. To determine whether differences in personality styles do exist between ADHD adolescents and adolescents without ADHD, the NED Five Factor Inventory (NEDFFI) was group administered to a sample of 25 adolescents who were previously diagnosed as having ADHD (referred to as the ' research group') and 25 controls (referred to as the ' control group') who were matched for age and educational level. Five testable hypotheses were formulated for each of the five personality scales. A comparison of each of the five scales between the research group and the control group yielded no significant result to support Liemkuhler's hypothesis. However, a comparison of the five scales within each group (either the research group or the control group) produced several significant differences. Significant correlations were also found between scales for each group. On the basis of these results it is suggested that specific differences in the facets (traits) that are measured by each of the five personality scales may exist for each group, as opposed to overall group differences in personality styles. It is further proposed that the facets that are tapped may be explained on the basis of assumed differences in the neurobiological and cognitive functioning of both groups. It is tentatively concluded that the results may provide partial support for Liemkuhler's hypothesis. However, it is acknowledged that the complexity of Liemkulher's argument warrants further and more detailed research. / Thesis (M.Sc.)-University of Natal, Pietermaritzburg, 2003.

This thesis used the electroencephalogram (EEG) to measure the electrophysiological correlates of auditory distraction. Chapter One determined that relative to broad-band noise, the presence of a continuous speech signal impaired task performance, attenuated the N1 peak and reduced theta/alpha band inter-trial phase coherence around the latency of the N1. Chapter Two found that reductions of inter-trial phase coherence during distraction were related to both disruptions of gain and the temporal fidelity of evoked responses. Chapter Three found that postsecondary adults with ADHD are not characterized by greater levels of distraction and that this population may be responding to sensory events with abnormally high phase locking. Chapter Three also found that Un-medicated ADHD adults had significantly more N1 latency, theta/alpha band evoked power than Medicated ADHD or Control groups. These results extend the literature on distraction by using time-frequency measures to assess how distraction modulates early sensory processing of stimulus events. / xxii, 171 p. : col. ill. ; 29 cm

Children with alcohol-related neurodevelopmental disorder or attention deficit/hyperactivity disorder differ on neuropsychological tasks and measures of eye movement control. M.Sc. Thesis, Queen’s University, Kingston, Ontario, Canada, January 2010. Background: Alcohol-related neurodevelopmental disorder (ARND) accounts for the majority of diagnoses associated with prenatal alcohol exposure. Unfortunately, ARND frequently poses a significant clinical challenge as these patients lack the visible physical characteristics associated with alcohol teratogenicity. Moreover, the cognitive and behavioural disabilities are complex and overlap with those of attention deficit/hyperactivity disorder (ADHD). Furthermore, co-morbid ADHD is prevalent in children with prenatal alcohol exposure. While early and accurate diagnosis provides the best prognosis for those affected, there is a lack of tools for differential diagnosis between these two disorders. The goal of this study was to test the hypothesis that children with ARND exhibit different performance from children with ADHD on computer-based neuropsychological tests and eye movement tasks. Methods: Our study group was composed of 42 children with ARND and 31 children with ADHD aged 8-15 years, male and female. Children completed four tasks selected from the Cambridge Neuropsychological Test Automated Battery (CANTAB®) that provided measures of attention, planning, strategy and spatial working memory. Subjects also performed pro- and anti-saccade tasks, and eye movements were recorded using a mobile eye-tracking system. Results: Children with ARND demonstrated elevated decision times on a visual matching test of attention and longer response times on a task of spatial working memory, although the two groups had similar errors scores. Also, compared to children with ADHD, children with ARND had greater anticipatory errors in both the pro- and anti-saccade tasks. Conclusion: This study demonstrates that there are measurable differences in executive function and eye movement control between children with ARND or ADHD. Greater deficits in visuospatial processing in ARND may underlie these differences. These findings demonstrate that the neurobehavioural phenotypes of children with ARND or ADHD have distinct features, which may be accounted for by differences in the patterns of brain injury underlying these two disorders. / Thesis (Master, Neuroscience Studies) -- Queen's University, 2010-01-15 15:15:47.738

The purpose of this dissertation was to examine the associations between sleep problems, sleep hygiene and ADHD symptoms in young adults. The first chapter of this dissertation provides an overview of ADHD in adulthood, and a review of the literature that has associated ADHD and sleep problems. This chapter also highlights the need to develop a valid and reliable instrument to assess sleep hygiene. The second chapter presents a manuscript which outlines the development of a new self-report measure of sleep hygiene in young adults. Exploratory and confirmatory factor analyses were used to develop two sleep hygiene scales (substance abuse and poor sleep scheduling) and overall results indicated that the new instrument has sound psychometric properties, as well as good construct and convergent validity. The third chapter presents a manuscript which outlines two empirical studies that examined the associations between sleep problems, sleep hygiene and ADHD symptoms in young adults. Results indicated that young adults with elevated ADHD symptoms reported more sleep problems (specifically insomnia and sleepiness) and poorer sleep hygiene (specifically substance abuse and poor sleep scheduling) than young adults without elevated ADHD symptoms. Young adults with ADHD also reported more sleep problems even after accounting for substance abuse and poor sleep scheduling, suggesting that poor sleep hygiene is not responsible for the sleep problems of young adults with ADHD. The fourth chapter presents a summary of the research findings, as well as a discussion of the methodological limitations and directions for future research. / Thesis (Ph.D, Psychology) -- Queen's University, 2010-01-20 15:27:40.187

The purpose of the study was to examine the use of the Bender Gestalt Test Second Edition (BGT-II) with children diagnosed with Attention-Deficit/Hyperactivity Disorder (ADHD). Previous research has examined the relationship of ADHD and visual-motor functioning based on overall developmental scores or specific "emotional indicators." Although several of these studies have examined the relationship of the previous edition of the BGT and ADHD symptoms, methodological problems, a lack of a clear theoretical rationale, and psychometric problems associated with the original edition, limit the validity and generalizability of these results.This study sought to examine the utility of the revised edition of the BGT, the BGT-II, in the assessment of behaviors associated with ADHD. Based upon a broad theory of ADHD (Barkley, 1997b), several hypotheses were made regarding how areas of deficit (e.g., self-regulation, planning, working memory, motor control) were expected to he manifested in BGT-I1 performance. An ADHD group (N = 67) was compared to a control group of normal subjects (N = 100) and a group of subjects diagnosed with mental retardation (N = 59). Additionally, the performances of children diagnosed with subtypes of ADHD were compared in an attempt to clarify the nature of the disorder.The results of the study do not support the use of the BGT-11 in the assessment of ADHD. Although those with ADHD tended to perform more poorly than controls on the BGT-II, these differences disappeared when intellectual level was controlled. Traditional emotional indicators purporting to reflect impulsivity and attention problems also failed to demonstrate their efficacy. With the exception of the indicator Confused Order, they were no more indicative of individuals diagnosed with ADHD than those with no knowndisabilities. The proposed ADHD-related indicators also failed to demonstrate the ability to differentiate between the ADHD group and controls. / Department of Educational Psychology

The present study was undertaken to determine the relationship between perinatal complications and subsequent development of Attention Deficit Hyperactivity Disorder (ADHD) and other behavioral characteristics. The biological mothers of 74 children diagnosed with ADHD and 77 children displaying no characteristics of the disorder completed the Maternal Perinatal Scale (MPS), the Behavior Assessment System for Children-Parent Rating Scales (BASC-PRS), and a demographic survey. In addition, the biological mothers of 120 children with no characteristics of ADHD or any other behavior disorders completed only the MPS so that exploratory factor analysis of the MPS could be completed.Following factor analysis, stepwise discriminant analysis of the resulting five factors was utilized to explore the nature of the relationship between such perinatal factors and ADHD. Results of this analysis indicated that emotional factors, or the amount of stress encountered during pregnancy and the degree to was planned, were the items that maximized the separation between the ADHD and Non-ADHD groups. Additional discrimination between the groups was attributed to the extent of insult or trauma to the developing fetus and the outcome of prior pregnancies. ADHD children were also found to have experienced twice as many behavioral, social, or medical problems, and were more likely to reach developmental milestones with delays.Stepwise discriminant analysis also revealed the Attention Problems and Hyperactivity scales of the BASC-PRS were most significant in differentiating between the ADHD and Non-ADHD subjects. Using the BASC-PRS resulted in approximately 90% of the total sample being correctly classified as ADHD or NonADHD. Canonical correlation analysis indicated that emotional factors and the general health of both the mother and the developing fetus were the best predictors of later behavioral patterns reported on the BASC-PRS. / Department of Educational Psychology

Access to abstract permanently restricted to Ball State community only. / Access to thesis permanently restricted to Ball State community only. / Department of Educational Psychology

This multi-method study provides detailed information about the friendships of 87 children with ADHD (77.0% boys) and 46 comparison children (73.9% boys) between the ages of 7 and 13. The methods used in the study included parent and teacher ratings, self-report measures, and direct observation of friends’ dyadic behaviours in three structured analogue tasks. Results indicated that, in contrast with comparison children, children with ADHD had friends with high levels of ADHD and oppositional symptoms; they perceived fewer positive features and more negative features, and were less satisfied in their friendships. Observational data indicated that children with ADHD performed both more legal and more illegal manoeuvres than comparison children in a fast-paced competitive game. While negotiating with their friends, children with ADHD made more insensitive and self-centred proposals than comparison children. In dyads consisting of one child with ADHD and one typically developing child, children with ADHD were often more controlling than their non-diagnosed friends. Globally, these results were robust and did not seem to be affected by age differences, ADHD subtypes, comorbidities, and medication status. Given the increased recognition of ADHD in adolescence and adulthood as well as the fact that negative peer reputation in childhood very strongly predicts mental-health status by early adulthood, this research may lead to the discovery of meaningful ways to help people with ADHD achieve improved mental health and happiness over their lifespan.