Browsing by Author "Mosdell, Jill"

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    Acquired brain injury and the unraveling of theory of mind: exploring the role of personality change and spatial cognition
    (2024) Mosdell, Jill; Solms, M. L.; Malcolm-Smith Susan
    This study investigates the intricate relationship between spatial cognition, personality changes (notably egocentrism), and Theory of Mind (ToM) following right hemisphere dysfunction (RHD) due to Acquired Brain Injury (ABI). Given the critical role of the right hemisphere in social and emotional behavior, this research focuses on understanding the connection between ToM and personality alterations, particularly as they relate to Cluster B personality traits postinjury. Through an exploration of right hemisphere syndrome deficits, including anosognosia and spatial neglect, the study aims to provide lesion-based insights into how ToM, spatial cognition, and personality changes interrelate post-ABI. The research is organized into two distinct phases: acute and chronic. It addresses three core objectives: firstly, to clarify the relationship between visuo-spatial abilities and ToM, hypothesizing that RHD adversely affects these capabilities and their interplay. Secondly, to examine the impact of ABI on Cluster B personality changes and their relationship to ToM, with a focus on narcissistic traits such as empathy, self-insight, and social interaction. Thirdly, to analyze ToM task performance in RHD individuals, especially in tasks like the Faux Pas test, controlling for executive functioning and intelligence. Employing both qualitative and quantitative methods, this study provides a unique perspective on RHD patients who maintain core cognitive abilities yet exhibit significant changes in social cognition and personality. Integrating insights from psychoanalysis, developmental, and abnormal psychology, the research enhances the understanding of ToM in the context of cognitive changes post-neurological impairment. This approach offers a comprehensive view of how patients adapt to brain injuries affecting their social and spatial cognitive functions. This study underscores the need for future ToM research to consider the impact of spatial cognition and personality traits. It highlights how these factors compound the loss of cognitive ToM abilities, leading to substantial alterations in patients' relationships and perceptions of the world. The findings emphasize the profound changes in ways of relating to self and others postneurological trauma, reinforcing the importance of a holistic understanding of ToM in clinical neuropsychology.
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    Adaptation of aphasia tests for neurocognitive screening in South Africa
    (2010) Mosdell, Jill; Balchin, Ross Malcolm; Ameen, Ozayr Sale
    Two aphasia tests — the Cookie Theft Test and the Boston Naming Test — were adapted to help eliminate western cultural, language and education bias in neurocognitive screening in South Africa. These tests were among the commonly used tests initially chosen for inclusion in a larger neurocognitive screening battery currently being developed and translated for use in South Africa — the Groote Schuur Neurocognitive Battery. The adaptations were made employing quantitative and qualitative converging lines of evidence to evaluate their efficacy. This evidence included consultation with clinicians at Groote Schuur Hospital and translators knowledgeable in Afrikaans and isiXhosa language and culture, qualitative feedback from the research participants, and the results on the tests. The adapted tests were piloted by testing 30 neurocognitively intact controls consisting of equal numbers of Afrikaans, English and isiXhosa speakers, comparing their scores to their performances on the original tests. Three aphasic patients were also briefly tested. Results indicate that the adaptations made to the tests improved the performance of controls over the original versions, and tentatively suggest that the adapted tests should be able to screen for aphasia. This pilot study recommends further changes to the Groote Schuur Naming Test before its introduction into the battery ahead of its validation.
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    Development and validation of a neurocognitive screening battery : language and spatial cognition
    (2008) Mosdell, Jill
    There is great need for an effective neurocognitive screening tool in South Africa. The outdated and diagnostically limited Mini Mental State Exam (MMSE) is currently the only widespread form of cognitive screening. This and virtually all other neurocognitive tests widely used in South Mrica were developed in Europe and North America and are inappropriate for South Africa's population. The present study aided in the development and validation of the first theory-driven neurocognitive screening tool specifically designed for South Africans, focusing on the Language and Spatial Cognition sections of the battery. Two tests - the Naming Test and the 3-D Analysis Test - were both adapted and re-piloted before their insertion into the Neurocognitive Battery ahead of its validation.