Hi, My name is Niki!

I am a Postdoctoral Scholar supported by an NIH T32 fellowship in AI/ML and Precision Nutrition. In this role, I develop and evaluate machine learning and deep learning models applied to large-scale population data, including NHANES and All of Us datasets, to identify Type 2 Diabetes risk predictors and study nutrition-related health outcomes. I also led a systematic review and meta-analysis examining the application of AI and ML in precision nutrition interventions, with a focus on biomarkers, hypertension, lipid profiles, anthropometrics, and behavior change (manuscript under peer review in the Journal of Nutrition). My training spans advanced AI/ML methods, precision nutrition science, and translational research, and I actively contribute to manuscript preparation, grant development, conference presentations, and student mentorship within a multidisciplinary team of nutrition scientists, clinicians, and data scientists.

Prior to this fellowship, I completed a postdoctoral appointment at the University of Washington's School of Nursing and Health Studies, where my work sat at the intersection of AI, behavioral health, and digital mental health. I applied NLP and LLM-based methods to analyze large-scale social media data, integrating semantic metrics, human perception data, and network analysis to evaluate how different AI response types influenced user experience and emotional outcomes in online mental health communities. I led a multidisciplinary team of graduate and undergraduate students spanning social work, nursing, public health, psychology, and education to conduct a systematic review of youth behavioral health literature and develop evidence-based policy recommendations for K-12 mental health services. I also led the development of a youth wellness curriculum and built an online resource hub featuring AI-enhanced interactive dashboards (Tableau, Power BI) to disseminate behavioral health strategies to practitioners and community stakeholders.

My work has been published in peer-reviewed journals including Psychiatry Research, Eating and Weight Disorders, PLOS ONE, and Psychological Reports, and has been featured in media outlets such as PsyPost for its public health relevance.

Selected Publications

Coronavirus Anxiety Associated with Enhanced Orthorexia Nervosa Symptoms and Reduced Cognitive Flexibility
Hayatbini, N., Knauft, K. M. & Kalia, V. (2025). Psychological Reports. https://doi.org/10.1177/00332941251343542
Rumination and Gender in the Relation Between Perceived Threat and State Anxiety During COVID-19
Knauft, K. M., Hayatbini, N., Wilensky, S. M., & Kalia, V. (2024). Psychological Reports. https://doi.org/10.1177/00332941241246491
Are Orthorexia Nervosa Symptoms Associated with Deficits in Inhibitory Control?
Hayatbini, N., Oberle, C.D. & Ali, M.N. (2021). Journal of Eating and Weight Disorders-Studies on Anorexia, Bulimia and Obesity, 26(5), 1553-1557. https://doi.org/10.1007/s40519-020-00979-4
Are Orthorexia Nervosa Symptoms Associated with Cognitive Inflexibility?
Hayatbini, N. & Oberle, C.D. (2019). Psychiatry Research, 271, 464-468. https://doi.org/10.1016/j.psychres.2018.12.017

Blog

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Publications

Coronavirus Anxiety Associated with Enhanced Orthorexia Nervosa Symptoms and Reduced Cognitive Flexibility
Hayatbini, N., Knauft, K. M. & Kalia, V. (2025)
IF = 1.7
Rumination and Gender in the Relation Between Perceived Threat and State Anxiety During COVID-19
Knauft, K. M., Hayatbini, N., Wilensky, S. M., & Kalia, V. (2024)
IF = 1.7
Adverse Childhood Experiences (ACEs) Associated with Reduced Cognitive Flexibility in Both College and Community Samples
Kalia V., Knauft, K., Hayatbini, N. (2021)
IF = 2.9
Cognitive Reappraisal Moderates the Relationship Between Perfectionism and Cognitive Flexibility
Hayatbini, N., Knauft, K., & Kalia, V. (2021)
Journal of Clinical Psychology, 77(7), 1685-1699. https://doi.org/10.1002/jclp.23124
IF = 2.5
Are Orthorexia Nervosa Symptoms Associated with Deficits in Inhibitory Control?
Hayatbini, N., Oberle, C.D. & Ali, M.N. (2021)
Journal of Eating and Weight Disorders-Studies on Anorexia, Bulimia and Obesity, 26(5), 1553-1557.
IF = 2.9
Cognitive Flexibility and Perceived Threat from COVID-19 Mediate the Relationship Between Childhood Maltreatment and State Anxiety
Kalia, V., Knauft, K., & Hayatbini, N. (2020)
IF = 2.9
Are Orthorexia Nervosa Symptoms Associated with Cognitive Inflexibility?
Hayatbini, N. & Oberle, C.D. (2019)
Psychiatry Research, 271, 464-468.
IF = 4.2
Body Image Coping Strategies Among Aesthetic Surgery Clients in Iran
Yazdandoost, R.Y., Hayatbini, N., Fatemi, M. (2017)
World Journal of Plastic Surgery, 6(2), 159-163.
A Comparative Study of Body Image Dissatisfaction and Psychological Symptoms Among Invasive and Minimally Invasive Aesthetic Surgery Clients and Control Group
Yazdandoost, R.Y., Hayatbini, N., Asgharnejad Farid, A., Gharaee, B. & Latifi, N. (2016)
World Journal of Plastic Surgery, 5(2), 144-149.

Publications

Coronavirus Anxiety Associated with Enhanced Orthorexia Nervosa Symptoms and Reduced Cognitive Flexibility
Hayatbini, N., Knauft, K. M. & Kalia, V. (2025)
IF = 1.7
Rumination and Gender in the Relation Between Perceived Threat and State Anxiety During COVID-19
Knauft, K. M., Hayatbini, N., Wilensky, S. M., & Kalia, V. (2024)
IF = 1.7
Adverse Childhood Experiences (ACEs) Associated with Reduced Cognitive Flexibility in Both College and Community Samples
Kalia V., Knauft, K., Hayatbini, N. (2021)
IF = 2.9
Cognitive Reappraisal Moderates the Relationship Between Perfectionism and Cognitive Flexibility
Hayatbini, N., Knauft, K., & Kalia, V. (2021)
Journal of Clinical Psychology, 77(7), 1685-1699. https://doi.org/10.1002/jclp.23124
IF = 2.5
Are Orthorexia Nervosa Symptoms Associated with Deficits in Inhibitory Control?
Hayatbini, N., Oberle, C.D. & Ali, M.N. (2021)
Journal of Eating and Weight Disorders-Studies on Anorexia, Bulimia and Obesity, 26(5), 1553-1557.
IF = 2.9
Cognitive Flexibility and Perceived Threat from COVID-19 Mediate the Relationship Between Childhood Maltreatment and State Anxiety
Kalia, V., Knauft, K., & Hayatbini, N. (2020)
IF = 2.9
Are Orthorexia Nervosa Symptoms Associated with Cognitive Inflexibility?
Hayatbini, N. & Oberle, C.D. (2019)
Psychiatry Research, 271, 464-468.
IF = 4.2
Body Image Coping Strategies Among Aesthetic Surgery Clients in Iran
Yazdandoost, R.Y., Hayatbini, N., Fatemi, M. (2017)
World Journal of Plastic Surgery, 6(2), 159-163.
A Comparative Study of Body Image Dissatisfaction and Psychological Symptoms Among Invasive and Minimally Invasive Aesthetic Surgery Clients and Control Group
Yazdandoost, R.Y., Hayatbini, N., Asgharnejad Farid, A., Gharaee, B. & Latifi, N. (2016)
World Journal of Plastic Surgery, 5(2), 144-149.

Media Coverage

"Perfectionistic Tendencies Are Associated with Reduced Cognitive Flexibility and Heightened Emotional Suppression"

This article in PsyPost discusses the significant findings of the research conducted by Hayatbini et al. (2021), highlighting the impact of perfectionism on cognitive and emotional processes.

Hayatbini, N. (2021)

Read more here →

"Coronavirus Anxiety Associated with Heightened Orthorexia Nervosa Symptoms and Reduced Cognitive Flexibility"

This article in PsyPost discusses the significant findings of the research conducted by Hayatbini et al. (2025), highlighting how pandemic-related anxiety combined with reduced cognitive flexibility contributed to an increase in orthorexia nervosa symptoms, as individuals became rigidly preoccupied with healthy eating as a coping mechanism.

Hayatbini, N. (May 2025)

Read more here →