Thesis (Ph. D.)--University of California, San Diego and San Diego State University, 2003. / Vita. Includes bibliographical references.

The aim of my thesis was to investigate in what grade teachers who work within special education make use any methods to train the working memory of their students to improve learning ability. I also wanted to examine the material used to train working memory and if any results were noticed. My choice of method was qualitative semi-structured interviews that were recorded during the interviews I conducted these in five different school with education for children with intellectual impairment. The result shows that the schools that are aware of recent research on working memory training had methods for training with their students. They could also see a result that shows that working memory can be improved with training. In those schools that not were aware of the research was working memory training something they didn`t do consciously. But with other forms of memory training, working memory training sometimes occurred as a result of the memory training.  The survey I did also show that current research has difficulties reaching out to the teachers without the active participation of teachers themselves.

Worldwide, millions of young and elderly patients receive procedures that could not be performed without the use of anesthetics. Unfortunately, emerging animal and human data suggest an association between exposure to general anesthesia and impairment of cognitive function in pediatric and geriatric patients. Recent laboratory data have shown that general anesthetics are potentially damaging to the developing and aging brain. However, the mechanism by which this happens is still unknown. General anesthetics affect learning and memory, a brain function involving neural plasticity. An important form of neural plasticity receiving attention is postnatal neurogenesis. This process is highly regulated and involved in hippocampal functions under physiological conditions. This dissertation hypothesizes that anesthetic induced alteration of postnatal neurogenesis may explain the cognitive impairment observed in some pediatric and geriatric patients after anesthesia. In order to accurately address this hypothesis, in the first portion of this dissertation, an animal model is used to examine the effects of two different anesthetics on cognition and new cell proliferation in young and aged rats. Furthermore, the second and third portion of this dissertation emphasizes on the effects of these two widely used anesthetics on each of the various stage of postnatal neurogenesis in young and aged rats.

Mild cognitive impairment (MCI) has long been associated with depression; however, few studies have addressed the presence of (prolonged) intrapersonal grief or its contribution to emotional distress in MCI. This may be a result of both an over-reliance on interpersonal models of grief (i.e. bereavement) and a systematic undervaluing of MCI individuals’ perspectives. Thus, this study took a qualitative approach, using interpretive description, to understand the first-hand experience of persons with MCI, with the intent of 1) determining whether grief occurs for this group and, if so, 2) comparing this experience to well-defined grief constructs. Six themes were identified: Uncertainty and ambiguity, losses of self and role, disenfranchisement and disconnection, primacy of MCI, emotional distress, and coping. A relationship between themes was found, such that uncertainty and ambiguity, losses of self and role, and disenfranchisement and disconnection comprised the core dimensions of the MCI experience, with losses of self and role serving a central and binding role between the other two. These core dimensions then contributed individually and collectively to the primacy of the MCI experience and emotional distress, which in turn exhibited a reciprocal relationship with coping. The overall experience of MCI reflects features of several grief reactions to nonfinite loss, most notably chronic sorrow and disenfranchised grief. Implications for practice and further investigation are discussed. / Graduate

Some seven percent of children in the general population are affected by Specific Language Impairment and/or Pragmatic Language Impairment with numerous cases undiagnosed. It is known that difficulty in communication affects psychosocial functioning and is likely to be a source of mental distress but the data on people’s access to and benefit from psychological intervention are limited. There is also limited understanding of psychologists’ capacity to meet these clients’ needs although their problems continue into adulthood. This research questions the population of counselling and clinical psychologists about their knowledge and experience of these disorders using an electronic questionnaire. Qualitative methods were then adopted with three participants with SLI/PLI and four psychologist practitioners familiar with such clients; this involved semi-structured interviews analysed using IPA and TA respectively. The purpose was to interpret and develop the clients' lived experiences into themes which were then used to look for possible connecting themes in the psychologists’ transcripts. This process was termed "interconnection" and was intended to reveal the coincidence and convergence of the two sides of the client/psychologist dyad. Results showed that whereas findings demonstrated the young men possessed a spectrum of coping and defence strategies as constituent parts of resilience, including self-esteem, self-identity and self-efficacy, the psychologists did not see the client as a congruent whole, addressing either their impairment or their mental health problem. Client resiliencies were not used in therapy and psychosocial difficulties were not recognised as a focus of distress although they did endeavour to modify their therapeutic approaches. Finally, consideration is given to whether the research aim is met, the implications for counselling psychology and possible future research. It is proposed that this methodology of interconnection has the potential to provide a novel approach to inform any future research and service development for this and other client groups in the way it takes patients/clients into account and connects them with professional working.

The purpose of this study was to gain insight into the amount of language models (i.e., dose frequency) that Spanish-English bilingual children with and without specific language impairment (SLI) require in order to consistently produce challenging target grammatical forms for 6 morphemes, 3 in English and 3 in Spanish, via a structural priming task. Participants included two 2nd grade children with SLI, five typically developing kindergarten children, and three typically developing 2nd grade peers. Participants were administered 10 control and 10 experimental cloze phrase computer tasks for each morpheme. In the control condition participants finished cloze phrase sentences which targeted the target morpheme while in the experimental task participants heard a model of the target morpheme and were subsequently required to finish the cloze phrase. Results replicated results of structural priming for all groups in each language. Results also indicated that Spanish was more robust in producing morphological priming effects in comparison to English morphological forms possibly due to linguistic differences. Clinical and research implications are discussed. / text

Typically developing Spanish-English bilingual children's production of twelve grammatical morphemes was analyzed for accuracy and described as a function of their English mastery, as indexed by mean length of utterance (MLU). Results revealed positive trends in morpheme accuracy as MLU increased. Despite a large degree of between subject variability, the data demonstrated general patterns that were consistent with previous literature, namely that the rate and trajectory of morpheme acquisition differs from monolingual norms, and that particular morphemes are predictably more and less challenging for bilingual children to produce accurately. MLU "cut-points" were suggested based on functional breaks in accuracy for several morphemes. / text

This thesis investigated the memory skills of young adults with and without language and learning disabilities (LLD) using the Deese-Roediger-McDermott word recall paradigm (Roediger & McDermott, 1995). Three types of word lists were presented: semantic lists consisted of words that are related to a non-presented critical item (CI) (e.g., bad) in meaning (good, rotten, harmful, worse); phonological lists included words related to the CI in sound (e.g., had, lad, bat, bag); and hybrid lists included words related to the CI in both meaning and sound (e.g., good, lad, rotten, bat). Individuals with diagnoses of LLD were classified as "true LLD" or "compensated LLD" based on language test scores and a discriminating composite score, while those without LLD were considered the "typical language" (TL) group. Hypotheses were made regarding veridical recall and memory intrusions, including intrusions of the non-presented critical item (CI). For veridical recall, the compensated LLD and TL groups were expected to have higher recall accuracy than the true LLD group. As for CI intrusions, two possible outcomes were considered: the true LLD group may recall more CIs due to inability to discriminate between presented and non-presented words (Kirchner & Klatzky, 1985); or they may recall fewer CIs due to difficulties forming traces of the gist of the word list (Weekes et al., 2005). Data from 30 participants (ages 18 to 25) -- 12 true LLD, 8 compensated LLD, and 10 TL -- were included in this thesis. Results indicated that the true LLD group showed a non-significant tendency to have lower recall accuracy scores than the other two groups, and a higher number of CI intrusions. List-type also affected accuracy and CI intrusions, as semantically-related lists increased recall accuracy and hybrid semantic-phonological lists increased CI intrusions. Possible conclusions from these data are presented along with recommendations for future research. / text

Specific language impairment (SLI) in bilingual Malaysian children is grossly underidentified for two reasons. First, there is an absence of locally-developed norm-referenced language assessment tools. The challenge in developing a local assessment tool comes from the inadequate knowledge of children’s English as it develops in the bilingual environment. Second, the characteristics of Malaysian English, a non-Standard form of English, are often confused with the features of SLI in monolingual children learning Standard English. To date, the literature has no information on SLI in bilingual children learning a non-Standard English because research mainly focuses on bilingual Standard English and monolingual non-Standard English. Spontaneous language sample is the recommended language assessment tool for bilingual Malaysian children because it provides quantitative and qualitative information for language development and assessment in communities with complex language environment. Phase 1 of the current study investigated the developmental sensitivity of four language sample measures (LSMs), including mean length of utterances (MLU), lexical diversity (D), the Index of Productive Syntax (IPSyn), and frequency of code-switching (FCS), by examining the relationship between these LSMs and age in 52 bilingual Chinese-English Malaysian children with normal language development (NLD), aged between 3;06 and 6;09. Analyses showed a highly significant linear relationship with age in D (r=.536) and IPSyn (r=.451), moderately significant linear relationship with MLU (r=.364), but not in FCS. The findings suggested that MLU, D, and IPSyn were developmentally sensitive to non-Standard English in the bilingual Malaysian children studied. Phase 2 compared the same measures obtained from nine children with SLI and their age-matched controls from the NLD group in Phase 1. The SLI group had significantly lower MLU and the IPSyn scores than the NLD group. Discriminant function analysis indicated that the IPSyn alone classified children into SLI and NLD groups at 77.8% classification accuracy. The four misclassified children, two in the SLI and two in the NLD group, were aged below 4;06 years. MLU and the IPSyn showed potential as SLI markers for bilingual Malaysian children. Two types of error patterns were observed from the SLI group. The first pattern included verb and the copula -be omissions which were also observed in younger children from the NLD group. The second pattern was omission of prepositions which was not observed in younger NLD group, reflected linguistic transfer from the first language. Future research in this area is suggested to a) extend the age range of the study to include older children to further verify the diagnostic potential of LSMs, b) consider longitudinal research design so that language development over time can be described and c) include non-linguistic measures given reports of these measures as potential markers of SLI. As an initial study on bilingual children learning non-Standard English, the current study provided empirical data for charting language development and also suggested potential markers for SLI. The study can serve as the basic framework not only for further research on other bilingual non-Standard English-speaking groups but also for children with language impairment secondary to developmental disorders in the same language group. / published_or_final_version / Speech and Hearing Sciences / Master / Master of Philosophy

The primarily goal of this study was to examine the patterns of cognitive and language processing of children with Specific Language Impairment (SLI) and how they related to their text comprehension, interpreted within constructivism. The study aimed to characterize the difference in language, character decoding, metacognitive processing and text comprehension between children with SLI and those under typical development; to identify the inter-relationships among their language processing, character decoding, metacognitive processing and text comprehension; and to investigate how the implementation of cognitive reading strategies instruction change their language processing, character decoding, metacognitive processing, belief towards reading and text comprehension. Two studies were carried out. In Study One, 73 participants were recruited from two Hong Kong primary schools; they were at second and third grade, 42 were diagnosed of SLI and the other were under typical development. Standardized instruments were used to tap children’s language processing and character decoding respectively. Researcher developed Metacognitive Processing Scale were adopted to rate their metacognitive and deep processing of text. A set of comprehension test, comprised of forced-choice inferential questions and two recall tasks, were used to assess their depth in understanding different types of text. Analyses indicated that SLI students did not only score poorer in language processing, but also in character decoding, metacognitive processing and text comprehension. Further analyses of both the entire sample and the SLI sample, indicated that there were significant correlations between character decoding, language processing, metacognitive processing with children’s text comprehension scores. In Study Two, there were 40 participants recruited from the SLI sample of the Study One. Cognitive reading strategy instruction program were developed. 21 participants was randomly selected to receive the experimental instruction and the another 19 were under conventional instruction as control. Besides the measures used in the Study One, interviews and teacher-reporting questionnaires were used to tap children’s belief towards reading and their classroom engagement. Analysis of pre-instruction and post-instruction tests indicated the experimental children showed significantly better progress on their oral language, text comprehension and belief about reading. Both the experimental and the control group showed similar progress on character decoding. The study offers both theoretical and educational contribution on the literacy development among the population of SLI. It identifies the role of metacognitive processing on literacy achievement. It provides the evidence of implementing cognitively-based reading strategies for literacy instruction for children with SLI within Chinese context. Upon the introduction of inclusive education, teachers now face students with much wider diversity, including a significant number of children with SLI. Possible collaboration between frontline teachers and speech therapists in designing potential classroom activities is discussed. / published_or_final_version / Education / Doctoral / Doctor of Education