The accuracy of neuropsychological assessment is critical in the diagnosis of cognitive impairments in older adults. However, existing neuropsychological tests may not be suitable for minority populations. This thesis aimed to address this issue by recruiting cognitively-healthy South Asian older adults and assessing cognitive function in this group. Results showed that typically used assessments, despite being translated, were not suitable for this cohort. Furthermore, skills required for test completion such as mathematics and writing/hand dexterity (which are related to education levels) influenced test scores. Therefore, new assessments of general cognitive function and associative memory were developed to improve the accuracy of neuropsychological test scores. The new tests were not affected by education and they achieved high internal and test re-test reliability. Time of day (TOD) that testing takes place is also known to affect cognition. Interestingly, no TOD effects were observed in this cohort. It was hypothesised that engagement in the daily five Islamic prayers may have contributed to this lack of a TOD effect. However, the results did not confirm this. The thesis then looked at overall prayer engagement and cognition. Results showed that engagement in the daily five prayers and Quran recitation significantly increased scores on assessments of processing speed. This thesis demonstrates that accurately assessing cognition in South Asian older adults is challenging and that the cognitive tests used must be suitable for this cohort. Interesting findings emerged for prayer engagement which may have wider implications for the field of cognitive reserve.

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Desis and Racial Minority Politics: Disrupting Assumptions of Ethnoracial Solidarity: Current sociological analyses of Desi political interests are incomplete because they gravitate toward flattened identity-based, and electoral-based, understandings of ethnoracial groups. This study examines the political agendas and campaigns of four political organizations, located in New York City and Washington, D.C., with South Asian-origin members and constituents. These groups are 1) The Washington Leadership Program; 2) South Asian Americans Leading Together; and 3) Seva New York; and 4) Desis Rising Up and Moving. I collected qualitative data via in-person interviews (n=40) and participant observations (n=10) with members and organizational leaders, and at public events and programs. A key finding from this study is that South Asians are not a cohesive political force. The narratives demonstrate that the political agendas and activities of each organization undoubtedly shift and evolve in response to racializing moments (such as the events and aftermath of September 11, 2001). The data also illustrate that because the political interests of South Asian Americans get activated in subgroups, along the margins, and fragmentally, their agendas still cannot be captured through a shared ethnoracial or "panethnic" experience. While the desire for ethnoracial solidarity comes from an identification of common cause, the internal fragments – defined by issues of class, religion, gender, sexuality, nation of origin, immigration and citizenship status, and language – point to the difficulty of developing an authentic practice of intra-ethnic solidarity for Desis. Further, each organization's relationship to building alliances and coalitions cross-racially further delineate the fragmented nature of Desi political values. Based on the narratives from participants and leaders in these organizations, I make a case for why sociologists need to expand their theoretical lens for interpreting South Asian political agendas and locate Desi politicization along an “assimilation-to-racialization continuum” that intersects the paradigms of “assimilation” and “racialization” in conversation with one another. The categories between the “assimilation-to-racialization continuum” are as follows: “Wholehearted Assimilation (of Racial Minorities into the Mainstream Elite),” “Model Minority Assimilation (into "Honorary Whiteness”) ,” “Normalizing Minority Representation and Racial Diversity,” “Racial Justice and Progressive Inclusivity,” and “Empowering the Most Marginalized for Social Justice & Transformative Change.” Although this study reveals the specificity of an “assimilation-to-racialization continuum” and its application to the political lives of South Asian Americans, we can nevertheless think of ways that this model can be extended to other ethnic and racial groups in the U.S. I posit that we adopt the “assimilation-to-racialization continuum” to better understand how fragmented ethnoracial communities engage the political sphere. / Sociology

Background: Although lifestyle modification is the cornerstone of GDM management, the evidence base on which dietary recommendations to prevent GDM is diverse and has not been synthesized in a consistent fashion. Objectives: The overall objective of this thesis is to assess the relationship of diet patterns, foods, and nutrients with GDM risk. Specifically, we seek to: 1) Quantify the relationship between dietary factors and GDM and metabolic disorders of pregnancy; 2) Compare the effects of dietary factors on markers of glycemic control, such as fasting glucose, fasting insulin, HbA1c, and the homeostatic model assessment for insulin resistance (HOMA-IR); 3) Assess the association and interaction between carbohydrate quality, and genetic load on the risk of developing GDM using data from 2 prospective birth cohort studies. Methods: We follow the approach set by the Cochrane Group’s Handbook for Systematic Review of Interventions to conduct meta-analyses and assess the quality of the evidence using the GRADE (Grading of Recommendations, Assessment, Development and Evaluation) approach. We analyze prospective cohort data of 2,504 women from the CHILD and START studies, which enrolled women of White-Caucasian and South Asian ethnicity. We quantify carbohydrate quality by deriving the glycemic index and load (GL), and total and added sugar intake. We construct a gene score using 102 loci that were previously associated with type 2 diabetes in genome-wide association studies. Results: 1) The meta-analysis identified high-quality evidence that red meat increases GDM risk; however, most associations of foods and nutrients with GDM and other metabolic disorders of pregnancy are of low-quality; 2) The network meta-analysis identified that most dietary interventions given with gestational weight gain advice will lower fasting glucose; 3) In South Asians, a high GL coupled with a high genetic load increased GDM risk six fold, but a high total sugar intake in the presence of a high genetic load reduced GDM risk. This paradoxical finding may be explained by a high correlation between total sugars and other healthy foods. Conclusions: Few valid associations between dietary factors and GDM risk exist. GL and total sugars may modify the genetic risk of GDM in South Asians but not in White-Caucasians. Further research is needed to determine effective interventions that can assist women in adopting healthier eating habits during pregnancy. / Thesis / Doctor of Philosophy (PhD) / Gestational diabetes mellitus (GDM) is glucose intolerance that first appears during pregnancy. Although lifestyle modification is the cornerstone of GDM management, dietary recommendations for GDM prevention are sparse. The overarching objective of this thesis is to describe the relationships between diets, foods, and nutrients and GDM and metabolic disorders of pregnancy and to understand whether carbohydrate quality can modify a genetic predisposition to diabetes. In the systematic literature reviews, high-quality evidence showed that red meat increases GDM risk. Moderate-quality evidence showed that several dietary factors also influence the risk of GDM and metabolic disorders of pregnancy, but most of the existing evidence is of low-quality. More high-quality studies are needed before dietary interventions can be implemented In our genetic study, we observed that carbohydrate quality may modify the genetic risk of diabetes in South Asians but not in White-Caucasians and conclude that carbohydrate quality may provide only a limited assessment of overall diet quality.

Typical identity stereotypes for South Asian Americans, such as the model minority myth, do not convincingly support a trajectory into K–12 education, as South Asian Americans are not readily seen as agents for social change. This qualitative study explored how South Asian American educators’ understanding of their ethnic and racial identity interplayed with their practice as critically conscious educators for social justice. Eleven participants who self-identified as social-justice-oriented were interviewed to share their experiences as South Asian American educators. Their responses revealed South Asian American educators develop their ethnic identity consciousness in complex ways, demonstrating self-awareness and subsequently draw upon their ethnic attachment and racialized experiences to perform as critically conscious educators, developing strong relationships with students from marginalized backgrounds and advancing equity in their schools. The participants’ positionalities reveal that South Asian Americans have tremendous potential as educators for social justice in education.