My research focuses on identifying modifiable factors of cognitive aging and dementia. Specifically, I study the interaction between how person-specific psychosocial/behavioral factors interact with environmental/contextual factors to influence cognitive health across multiple time scales (e.g., momentary, daily, yearly). My work makes use of digital technologies (e.g., smartphone-based ambulatory cognitive assessments), passive sensing (e.g., GPS activity space, physical activity), and ecological momentary assessments (e.g., stress, social interactions) to capture people's real-world experiences embedded in environmental contexts that may impact cognitive health. 

Ongoing Awardds. 
National Institute on Aging (NIA) K99 “Neighborhood characteristics, GPS-based activity space, and cognitive health” (Feb 2023 - Jan 2025)
Alzheimer's Association Research Fellowship "Pathways linking neighborhood and behavioral factors to the risk of ADRD" (Mar 2023 - Feb 2026)

Hyun, J., Lovasi, G.S., Katz, M.J., Derby, C.A., Lipton, R.B., & Sliwinski, M.J. (2024). Perceived but not objective measures of neighborhood safety and food environments are associated with longitudinal changes in processing speed among urban older adults. BMC Geriatrics, 24:551. https://doi.org/10.1186/s12877-024-05068-0  

Hyun, J., Katz, M.J., Derby, C.A., Roque, N., Muñoz, E., Sliwinski, M.J., Lovasi, G.S., & Lipton, R.B. (2023). Availability of healthy foods, fruit and vegetable consumption, and cognition among urban older adults. BMC Geriatrics, 23:302. https://doi.org/10.1186/s12877-023-04003-z

Adkins-Jackson, P.B., George, K.M., Besser, L.M., Hyun, J., Lamar, M., Hill-Jarrett, T.G., Bubu, O.M., Flatt, J.D., Heyn, P.C., Cicero, E.C., Kraal, A.Z., Zanwar, P.P., Peterson, R., Kim, B., Turner, R.W., Viswanathan, J., Kulick, E.R., Zuelsdorff, M., Stites, S.D., Rentería, M.A., Tsoy, E., Seblova, D., NG, T.K.S., Manly, J.J., Babulal, G. (2023). The structural and social determinants of Alzheimer’s disease related dementias. Alzheimer's & Dementia. http://doi.org/10.1002/alz.13027

Chen, S., Hyun, J., Graefe, A.R., Mowen, A.J., Almeida, D.M., & Sliwinski, M.J. (2022). The influence of leisure engagement on daily emotional well-being. Leisure Sciences, 44(7), 995-1012. https://doi.org/10.1080/01490400.2020.1757537

Hyun, J., Qin, J., Wang, C., Katz, M.J., Pavlovic, J.M., Derby, C.A., & Lipton, R.B. (2022). Reliabilities of intra-individual mean and intra-individual variability of self-reported pain derived from ecological momentary assessments: Results from the Einstein Aging Study. Journal of Pain, 23(4), 616-624. https://doi.org/10.1016/j.jpain.2021.10.008

Chen, S., Hyun, J., Graefe, A.R., Almeida, D.M., Mowen, A.J., & Sliwinski, M.J. (2022). Associations Between Enjoyable Activities and Uplifting Events: Effects on Momentary Positive Affect in Adulthood. Journal of Leisure Research, 53(2), 211-228, https://doi.org/10.1080/00222216.2021.1878002​  

Hyun, J., Hall, C.B., Katz, M.J., Derby, D.A., Lipnicki, D.M., Crawford, J.D., Guita, A., Vaccaro, R., Davin, A., Kim, K.W., Han, J.W., Bae, J.B., Röhr, S., Riedel-Heller, S., Ganguli, M., Jacobsen, E., Hughes, T.F., Brodaty, H., Kochan, N.A., Trollor, J., Lobo, A., Santabarbara, J., Lopez-Anton, R., Sachdev, P.S., & Lipton, R.B. (2022). Education, occupational complexity, and incident dementia: A COSMIC collaborative cohort study. Journal of Alzheimer's Disease, 85(1), 179-196. https://doi.org/10.3233/JAD-210627 

Cerino E.S., Katz, M.J., Wang, C., Qin, J., Gao, Q., Hyun, J., Hakun, J.G., Nelson, A.R., Derby, C.A., Lipton, R.B., & Sliwinski, M.J. (2021). Variability in cognitive performance on mobile devices is sensitive to mild cognitive impairment: Results from the Einstein Aging Study, Frontiers in Digital Health, 3, https://doi.org/10.3389/fdgth.2021.758031.

Yoneda, T., Lewis, N. A., Knight, J. E., Rush, J., Vendittelli, R., Kleineidam, L., Hyun, J., Piccinin, A., Hofer, S., Hoogendijk, E., Derby, C., Scherer, M., Riedel-Heller, S., Wagner, M., van den Hout, A., Wang, W., Bennett, D. & Terrera, G. M. (2021). The importance of engaging in physical activity in older adulthood for transitions between cognitive states: A coordinated analysis of 14 longitudinal studies. Journal of Gerontology: Medical Sciences, 76(9). doi:10.1093/gerona/glaa268

Hyun, J., Katz, J.M., Lipton, R.B., & Sliwinski, M. J. (2021). Mentally challenging occupations are associated with more rapid cognitive decline at later stages of cognitive aging. The Journals of Gerontology: Series B, 76 (4), 671-680. https://doi.org/10.1093/geronb/gbz122 

Hyun, J., Hall, C.B., Sliwinski, M.J., Katz, J.M., Wang, C., Ezzati, A., & Lipton, R.B. (2020). Effect of mentally challenging occupations on incident dementia differs between African Americans and non-Hispanic Whites. Journal of Alzheimer's Disease, 75(4), 1405-1416, https://doi.org/10.3233/JAD-191222

Ezzati, A., Harvey, D.H., Habeck, C., Golzar, Al, Qureshi, I.A., Zammit, A.R., Hyun. J., Truelove-Hill, M., Hall, C.B., Davatzikos, C., Lipton, R.B. (2020). Predicting Amyloid-β levels in amnestic mild cognitive impairment using machine learning techniques. Journal of Alzheimer's Disease, 73, 1211-1219, https://doi.org/10.3233/JAD-191038

Sprague, B.N., Freed, S.A., Webb, C.E., Phillips, C.B., Hyun, J., Ross, L.M. (2019). The impact of behavioral interventions on cognitive function in healthy older adults: A systematic review. Ageing Research Reviews, 52, 32–52, https://doi.org/10.1016/j.arr.2019.04.002 

Hyun, J., Sliwinski, M. J., & Smyth, J. M. (2019). Waking Up on the Wrong Side of the Bed: The Effects of Stress Anticipation on Working Memory in Daily Life. The Journals of Gerontology: Series B, 74(1), 38–46. First published 2018, https://doi.org/10.1093/geronb/gby042

Neupert, S. D., Neubauer, A. B., Scott, S. B., Hyun, J., & Sliwinski, M. J. (2019). Back to the Future: Examining Age Differences in Processes Before Stressor Exposure. The Journals of Gerontology: Series B, 74(1), 1–6. First published 2018, https://doi.org/10.1093/geronb/gby074

Hyun, J., Sliwinski, M. J., Almeida, D. M., Smyth, J. M., & Scott, S. B. (2018). The moderating effects of aging and cognitive abilities on the association between work stress and negative affect. Aging & Mental Health, 22(5), 611-618.  https://doi.org/10.1080/13607863.2017.1299688

Sliwinski, M. J., Mogle, J. A., Hyun, J., Munoz, E., Smyth, J. M., & Lipton, R. B. (2018). Reliability and Validity of Ambulatory Cognitive Assessments. Assessment, 25(1), 1-30. https://doi.org/10.1177/1073191116643164

Sprague, B. N., Hyun, J., & Molenaar, P. C. M. (2017). Revisiting measurement invariance in intelligence testing in aging research: Evidence for almost complete metric invariance across age groups. Journal for Person-Oriented Research, 3(2), 86-100. https://doi.org/10.17505/jpor.2017.08