Article
Economics
Giancarlos Parady, Andreas Frei, Matthias Kowald, Sergio Guidon, Michael Wicki, Pauline van den Berg, Juan-Antonio Carrasco, Theo Arentze, Harry Timmermans, Barry Wellman, Kiyoshi Takami, Noboru Harata, Kay Axhausen
Summary: This study aims to comparatively examine the factors influencing social interaction frequency among social network members with different communication modes. Results reveal consistent associations between social interaction frequency and network size, ego-alter distance, and emotional closeness, which are largely independent of context.
JOURNAL OF TRANSPORT GEOGRAPHY
(2021)
Article
Clinical Neurology
Brea L. Perry, Will R. McConnell, Max E. Coleman, Adam R. Roth, Siyun Peng, Liana G. Apostolova
Summary: Research suggests that social connectedness can help older adults with dementia maintain cognitive functionality and quality of life. This paper proposes two pathways through social bridging and bonding to achieve this goal. Social connectedness may have downstream implications for multiple pathophysiological processes in cognitive aging, making it a strong candidate for clinical or policy intervention.
ALZHEIMERS & DEMENTIA
(2022)
Article
Engineering, Civil
Giancarlos Parady, Kiyoshi Takami, Noboru Harata
Summary: This article presents the results of a survey on egocentric social networks in the Greater Tokyo Area, which is the first study in Japan to use an unrestricted name generator. The study includes information on network characteristics, social interaction patterns, and estimation results of social contact frequency compared to benchmark data. It provides valuable insights for future research in social networks and interactions.
Article
Clinical Neurology
Neika Sharifian, Afsara B. Zaheed, Emily P. Morris, Ketlyne Sol, Jennifer J. Manly, Nicole Schupf, Richard Mayeux, Adam M. Brickman, Laura B. Zahodne
Summary: Lower cortical thickness was associated with worse global cognition among individuals with smaller friend networks, but not among individuals with larger friend networks. This pattern of results was most prominent for language and speed/executive functioning. Longitudinal and intervention studies are needed to explore whether these findings reflect a protective effect of later-life friendships for maintaining cognitive performance in the context of poorer brain health.
ALZHEIMERS & DEMENTIA
(2022)
Article
Endocrinology & Metabolism
Abby R. Hillmann, Roma Dhingra, Rebecca G. Reed
Summary: This study investigated the role of social support and contact frequency in biological aging, and found that higher levels of support and contact with friends and family were associated with slower aging.
PSYCHONEUROENDOCRINOLOGY
(2023)
Article
Physics, Fluids & Plasmas
Didier Le Bail, Mathieu Genois, Alain Barrat
Summary: Temporal networks of face-to-face interactions provide insights into the dynamics of social systems. We propose a framework that combines observed interaction networks with underlying social bond networks, taking into account mechanisms such as triadic closure and shared social context. We compare different versions of the model with empirical data to understand the mechanisms that lead to realistic social temporal networks.
Article
Public, Environmental & Occupational Health
Gerhard Krug, Sebastian Prechsl
Summary: This study uses German panel data to examine the role of social network size and composition in explaining the negative effect of unemployment on health. The findings suggest that structural features of the social network do not mediate the health-damaging effect of unemployment.
SOCIAL SCIENCE & MEDICINE
(2022)
Article
Multidisciplinary Sciences
Ashley J. Thomas, Rebecca Saxe, Elizabeth S. Spelke
Summary: Infants learn to identify potential social partners by observing social interactions and combining it with their preexisting relationship with their parents.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Clinical Neurology
Max E. Coleman, Meghan E. H. Roessler, Siyun Peng, Adam R. Roth, Shannon L. Risacher, Andrew J. Saykin, Liana G. Apostolova, Brea L. Perry
Summary: People with complex jobs have better cognitive function and a lower risk of dementia in old age, but complexity has different dimensions.
ALZHEIMERS & DEMENTIA
(2023)
Article
Multidisciplinary Sciences
Jae-Young Son, Apoorva Bhandari, Oriel FeldmanHall
Summary: Individuals can infer unobserved friendships in a social network based on social features. Inference ability depends on a simple similarity heuristic and a complex cognitive map.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Multidisciplinary Sciences
Jae-Young Son, Apoorva Bhandari, Oriel Feldmanhall
Summary: This article investigates the formation of social navigation and inferential cognitive maps, finding that people infer multistep relations by abstracting known relationships and utilize this mechanism to uncover complex social network structures and make adaptive inferences. This study is of significant importance in understanding social behavior and the role of cognitive maps in social inference.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Clinical Neurology
Yemian Li, Yuhui Yang, Peng Zhao, Jingxian Wang, Baibing Mi, Yaling Zhao, Leilei Pei, Hong Yan, Fangyao Chen
Summary: This study aimed to explore the causal effects of specific social relationship subdomains on cognitive function among middle-aged and elderly Chinese. The findings showed that interaction with families, caring for grandchildren, interaction with friends, and participation in social activities were all associated with cognitive z-scores. Participants who had social contact 1-3 times a week had better cognitive function.
JOURNAL OF AFFECTIVE DISORDERS
(2023)
Article
Psychology, Multidisciplinary
Nicole Burke, Natalie Brezack, Amanda Woodward
Summary: Psychologists are interested in understanding how early social environments impact children's behavior and cognition. However, there have been few tools available to quantify children's social relationships. This study demonstrates that social network methodology can provide a quantitative analysis of children's early social environments and highlight the variation across development.
FRONTIERS IN PSYCHOLOGY
(2022)
Article
Geriatrics & Gerontology
Irene Fernandez, Adrian Garcia-Molla, Amparo Oliver, Noemi Sanso, Jose M. Tomas
Summary: This study investigates the impact of social and intellectual activity participation on cognitive functioning in old age and finds that these activities are relatively important predictors of cognition compared to other factors.
ARCHIVES OF GERONTOLOGY AND GERIATRICS
(2023)
Article
Clinical Neurology
Laura B. Zahodne, Neika Sharifian, Ann Zarina Kraal, Ketlyne Sol, Afsara B. Zaheed, Jennifer J. Manly, Adam M. Brickman
Summary: This longitudinal study found that higher Friendship scores predicted less episodic memory decline, and this association did not significantly differ across racial/ethnic groups. Therefore, friendships may have potential importance for subsequent episodic memory trajectories among older adults.
JOURNAL OF THE INTERNATIONAL NEUROPSYCHOLOGICAL SOCIETY
(2021)
Article
Clinical Neurology
Laura B. Zahodne, Neika Sharifian, Ann Zarina Kraal, Ketlyne Sol, Afsara B. Zaheed, Jennifer J. Manly, Adam M. Brickman
Summary: This longitudinal study found that higher Friendship scores predicted less episodic memory decline, and this association did not significantly differ across racial/ethnic groups. Therefore, friendships may have potential importance for subsequent episodic memory trajectories among older adults.
JOURNAL OF THE INTERNATIONAL NEUROPSYCHOLOGICAL SOCIETY
(2021)
Article
Clinical Neurology
Afsara B. Zaheed, Neika Sharifian, A. Zarina Kraal, Ketlyne Sol, Jennifer J. Manly, Nicole Schupf, Adam M. Brickman, Laura B. Zahodne
Summary: This study found that the negative association between perceived stress and cognitive function in older adults may be mediated by depressive symptoms, which can be buffered by perceived control. No significant moderation effects were found by gender, race, or ethnicity in a racially and ethnically diverse sample.
JOURNAL OF THE INTERNATIONAL NEUROPSYCHOLOGICAL SOCIETY
(2021)
Article
Psychology, Clinical
A. Zarina Kraal, Lauren Massimo, Evan Fletcher, Carmen Carrion, Luis D. Medina, Dan Mungas, Brandon E. Gavett, Sarah Tomazewski Farias
Summary: The study validates the concept of functional reserve which explains individual differences in susceptibility to Instrumental Activities of Daily Living dysfunction independent of demographics, cognition, and neuropathology. Results show that dementia patients have lower functional reserve compared to cognitively normal individuals. Higher baseline functional reserve is associated with lower dementia severity and slower disease progression. Physical function and apathy are identified as strong predictors of functional reserve.
Article
Psychiatry
Pooja Kumar, A. Zarina Kraal, Andreas M. Prawdzik, Allison E. Ringold, Vicki Ellingrod
Summary: The study focused on the potential relationship between dietary glutamic acid consumption and depressive symptomatology in non-obese patients with schizophrenia, finding that higher levels of dietary glutamic acid were associated with greater depression symptomatology. Further research is needed to specifically examine this relationship.
FRONTIERS IN PSYCHIATRY
(2021)
Article
Psychiatry
Kristen M. Ward, Kyle Burghardt, A. Zarina Kraal, Andrew Jaeger, Larisa Yeomans, Cora McHugh, Alla Karnovsky, Kathleen A. Stringer, Vicki L. Ellingrod
Summary: This study aimed to investigate the relationship between folate pharmacogenomics, one-carbon metabolites, and insulin resistance in patients with schizophrenia. The results indicated that pharmacogenomic variants affecting MTHFR enzyme functionality were associated with increased cardiovascular disease risk, while glycine, serine, and betaine concentrations showed an inverse correlation with HOMA-IR.
FRONTIERS IN PSYCHIATRY
(2021)
Article
Gerontology
Afsara B. Zaheed, Neika Sharifian, Emily P. Morris, A. Zarina Kraal, Laura B. Zahodne
Summary: Late-life marital status and marital biography have a significant impact on cognitive aging, especially among previously married older women. It is important to consider multiple aspects of marital biography, not just current marital status, in cognitive aging research. Future studies should identify mechanisms through which marital histories influence cognitive aging, such as socioeconomic resources and emotional support.
PSYCHOLOGY AND AGING
(2021)
Article
Public, Environmental & Occupational Health
Laura B. Zahodne, Neika Sharifian, A. Zarina Kraal, Emily P. Morris, Ketlyne Sol, Afsara B. Zaheed, Lindsey Meister, Richard Mayeux, Nicole Schupf, Jennifer J. Manly, Adam M. Brickman
Summary: Non-Hispanic Black older adults have a higher risk of Alzheimer's disease and related dementias (ADRD) than non-Hispanic Whites, reflecting racial disparities in brain and cognitive health. Research suggests that racial discrimination may be detrimental to brain aging among non-Hispanic Black older adults, contributing to their disproportionate dementia burden. Further studies that disaggregate discrimination by attribution may provide a clearer understanding of racial inequalities in brain and cognitive aging.
SOCIAL SCIENCE & MEDICINE
(2023)
Article
Psychology, Clinical
Abbey M. Hamlin, A. Zarina Kraal, Ketlyne Sol, Emily P. Morris, Alexa G. Martino, Afsara B. Zaheed, Laura B. Zahodne
Summary: Racial inequalities in cognitive aging are linked to disparities in socioeconomic status, chronic diseases, and psychosocial stress. This study highlights the importance of social engagement in promoting better cognitive aging, and suggests that lower social activity participation among Black older adults may contribute to racial differences in cognitive outcomes.
Article
Clinical Neurology
S. Fountain-Zaragoza, O. Horn, K. E. Thorn, A. Z. Kraal, Andreana Benitez
Summary: This study aimed to determine whether normative morphometric estimates generated from open-source software replicate established patterns of neurodegeneration in aMCI and whether these metrics correlate with episodic memory performance. The results showed that participants in the aMCI group exhibited poorer memory and smaller volumes in AD-relevant regions compared to the CN group. These findings support the validity and cost-effectiveness of free software as alternatives to proprietary software for research settings.
JPAD-JOURNAL OF PREVENTION OF ALZHEIMERS DISEASE
(2023)
Review
Clinical Neurology
Paris B. Adkins-Jackson, Kristen M. George, Lilah M. Besser, Jinshil Hyun, Melissa Lamar, Tanisha G. Hill-Jarrett, Omonigho M. Bubu, Jason D. Flatt, Patricia C. Heyn, Ethan C. Cicero, A. Zarina Kraal, Preeti Pushpalata Zanwar, Rachel Peterson, Boeun Kim, Robert W. Turner, Jaya Viswanathan, Erin R. Kulick, Megan Zuelsdorff, Shana D. Stites, Miguel Arce Renteria, Elena Tsoy, Dominika Seblova, Ted K. S. Ng, Jennifer J. Manly, Ganesh Babulal
Summary: This review examines the impact of social and structural determinants of health on the risk and outcomes of Alzheimer's disease and related dementias using Bronfenbrenner's ecological systems theory. The study finds that macro-system influences such as racism, classism, sexism, and homophobia are the root causes of health disparities. By analyzing quantitative and qualitative studies, this paper highlights key areas of research linking social and structural determinants with Alzheimer's disease and related dementias and proposes directions for future research.
ALZHEIMERS & DEMENTIA
(2023)
Meeting Abstract
Cardiac & Cardiovascular Systems
A. Zarina Kraal, Evelyn Ramirez, Alice Gavarrete Olvera, Pallavi Balte, Emily M. Briceno, Ryan T. Demmer, Mitchell S. Elkind, Hector M. Gonzalez, Alden L. Gross, Susan R. Heckbert, Virginia J. Howard, Akshaya Krishnaswamy, Deborah A. Levine, Thomas H. Mosley, Elizabeth C. Oelsner, Sudha Seshadri, Astrid Suchy-Dicey, Kristine Yaffe, Jennifer J. Manly, Priya Palta
Article
Clinical Neurology
Paris B. Adkins-Jackson, A. Zarina Kraal, Tanisha G. Hill-Jarrett, Kristen M. George, Kacie D. Deters, Lilah M. Besser, Justina F. Avila-Rieger, Indira Turney, Jennifer J. Manly
Summary: With the rapid expansion of the aging population, the burden of Alzheimer's disease related dementias (ADRD) is anticipated to increase in racialized and minoritized groups who are at disproportionately higher risk. To date, research emphasis has been on further characterizing the existence of racial disparities in ADRD through comparisons to groups racialized as White that are assumed to be normative. Much of the literature on this comparison insinuates that racialized and minoritized groups experience poorer outcomes due to genetics, culture, and/or health behaviors.
ALZHEIMERS & DEMENTIA
(2023)
Article
Clinical Neurology
A. Zarina Kraal, Afsara B. B. Zaheed, Anna Krasnova, Harita Vadari, DeAnnah R. R. Byrd, Laura B. B. Zahodne
Summary: This study extends findings on the associations between adverse childhood experiences (ACEs) and cognitive health in older adulthood. It provides evidence for broad and persistent indirect associations between parental substance abuse or physical abuse in childhood and cognitive aging, mediated by educational attainment and stroke. Future research should examine additional ACEs and mechanisms as well as moderators of these associations to better understand intervention points.
JOURNAL OF THE INTERNATIONAL NEUROPSYCHOLOGICAL SOCIETY
(2023)
Article
Geriatrics & Gerontology
Neika Sharifian, A. Zarina Kraal, Afsara B. Zaheed, Ketlyne Sol, Emily P. Morris, Laura B. Zahodne
Summary: The study found that higher social media use was associated with more depressive symptoms in younger adults, but not in older adults. Additionally, while higher social media use was related to higher envy in both age groups, this association was stronger in younger adults.
INNOVATION IN AGING
(2021)
Article
Psychology, Clinical
Emily P. Morris, Afsara B. Zaheed, Neika Sharifian, Ketlyne Sol, A. Zarina Kraal, Laura B. Zahodne
Summary: This study found that younger subjective age predicts better episodic memory and executive functioning performance, with depressive symptoms mediating the relationship between subjective age and language, speed, episodic memory, and executive functioning. Chronological age moderates these associations, with direct effects of younger subjective age remaining for language and speed domains.
JOURNAL OF CLINICAL AND EXPERIMENTAL NEUROPSYCHOLOGY
(2021)
