Nate Phillips

Graduate Student, Clinical Program

Nate (he/him) is a graduate student in the Clinical Psychology PhD program and currently completing his predoctoral clinical internship at the Charleston Consortium/Medical University of South Carolina (MUSC). His research focuses on the integration of personality and psychopathology to better understand externalizing behaviors  (e.g., aggression, rule-breaking, substance use) across three areas:

(1) Multimethod examination of individual differences associated with externalizing behaviors

(2) Investigation of the dynamic nature of externalizing behaviors via ambulatory assessment

(3) Decomposition of multidimensional externalizing constructs and disorders (e.g., psychopathy) into their basic elements

Additionally, he is a strong supporter of open science practices and is deeply interested in questions related to meta-science and the philosophy of science. In his free time, Nate enjoys playing and watching soccer, running, hiking, and watching TV.

Selected Publications:

Phillips, N. L., Carter, N. T., King, K. M., Hyatt, C. S., Owens, M. M., Lynam, D. R., & Miller, J. D. (2025). Additive and interactive relations of personality and cognition with externalizing behaviors. Clinical Psychological Science, 13(5), 951-977. https://doi.org/10.1177/21677026251320289

Phillips, N. L., Rose, L., Lynam, D. R., & Miller, J. D. (2025). Elemental psychopathy assessment’s nomological net: A meta-analytic review. Personality Disorders: Theory, Research, and Treatment, 16(4), 377–393. https://doi.org/10.1037/per0000728

Phillips, N. L., Du, T. V., Miller, J. D., & Lynam, D. R. (2025). Reactive and Proactive Aggression in Daily Life: An Exploratory Experience‐Sampling Method Study. Aggressive Behavior, 51(1), e70019. https://doi.org/10.1002/ab.70019

Phillips, N. L., Sharpe, B. M., Hyatt, C. S., Owens, M. M., Carter, N. T., Lynam, D. R., Banaschewski, T., Bokde, A. L. W., Barker, G., Desrivières, S., Flor, H., Grigis, A., Gowland, P., Heinz, A., Brühl, R., Martinot, J.-L., Martinot, M.-L. P., Artiges, E., Nees, F., . . . The IMAGEN Consortium. (2025). Structural brain correlates of externalizing traits and symptoms in the IMAGEN sample. Personality Disorders: Theory, Research, and Treatment, 16(1), 43–56. https://doi.org/10.1037/per0000701

Other Affiliations:

Kayley Morrow

Graduate Student, Clinical Program
Education:
2023 - M.S. University of Georgia
2019 - B.A. West Virginia University
Research Interests:

I am interested in understanding how individual and dyadic processes influence the intergenerational transmission of psychopathology symptoms in parents and children. Using a multi-methodological and dynamic-systems approach, I examine the role of parenting behaviors and parent-child coregulatory patterns to identify ways to promote youth socioemotional functioning and self-regulation development.

Dissertation/Thesis Title:
A Latent Profile Analysis of Maternal Self-Regulation and Associations with Parent-Child Behavioral and Physiological Synchrony in Latinx and Black Mother-Child-Dyads (Thesis Title)

Shared Affect and Physiological Synchrony as a Moderator of the Link Between Psychopathology Symptoms in Mother-Child Dyads (Dissertation Title)

Sydney James

Graduate Student, Clinical Program

Sydney James is a first-year graduate student studying under the mentorship of Dr. Gregory Strauss in the Clinical Psychology PhD program. She is originally from North Carolina where she completed her undergraduate degree at the University of North Carolina Chapel Hill. Her research focuses on the impact of cultural factors on symptoms and outcomes of schizophrenia. 

Kassidy Hogan

Graduate Student, Clinical Program

Kassidy Hogan is a first-year graduate student from Denver, Colorado studying under the mentorship of Dr. Lawrence Sweet in the Clinical Psychology PhD program. She also completed her undergraduate studies at UGA where she worked as a research assistant in the Institute of Gerontology under Dr. Lisa Renzi-Hammond. Her research focuses on the cross-section between public health and neuroscience, with a focus on the diagnosis and prevention of Alzheimer's Disease. 

Education:

 

  • Bachelor of Science, University of Georgia (2021)
    • Double major in Biology and Psychology
    • Emphasis in Neuroscience
    • Minor in Spanish
    • Certificate in Healthcare System Navigation 

Leigha Rose Waikel

Graduate Student, Clinical Program

Leigha (she/her) is currently a trauma-track intern at the VA Maryland Healthcare System/University of Maryland Consortium and a doctoral candidate in the clinical program. Her research interests lie at the intersection of personality, externalizing psychopathology, and sucide risk, including:

  •  Advancing the conceptualization, assessment, and prevention of suicide by leveraging dimensional models of personality and psychopathology (e.g., the Five Factor Model, the Hierarchical Taxonomy of Psychopathology). 
  • Applying longitudinal modeling techniques to capture the dynamic interactions between personality, cognitive-affective, and interpersonal processes from which suicidal thoughts and behaviors emerge. These include multilevel modeling, latent growth modeling, and continuous-time dynamic curve modeling. 
  • Examining the role of externalizing traits (e.g., antagonism, impulsivity) and states (e.g., acute negative affect, anger, aggression) in the development of suicidal thoughts and behaviors. 

Leigha uses open science practices to strengthen the transparency and replicability of her work, including preregistration, registered reports, and open sharing of materials, code, and data whenever possible. She has also been involved in meta-science projects aimed at improving the robustness of psychological science.

 Note: I publish as Leigha Rose.

View my website here.

View my OSF page here.

Dissertation/Thesis Title:
Thesis Title: Validity, stability, and change in psychopathic traits in older adults: A registered report (Clinical Psychological Science, 2025)
Comps Title: Associations between psychopathy and suicide: A meta-analytic review (Personality Disorders: Theory, Research, & Treatment, 2025)
Dissertation Title: Longitudinal stability and predictors of suicidal thoughts and behaviors in older adults: The importance of personality (revise and resubmit, Clinical Psychological Science)

Elizabeth Wiggins

Alumni, Behavioral and Brain Sciences Program

Elizabeth Wiggins is a fifth-year psychology graduate student in the Behavioral and Brain Sciences Ph.D. program at the University of Georgia from Washington, DC. She received her B.S. in Psychology with a minor in Health Studies from Haverford College in 2021. She is a member of the Health and Development Laboratory.

Kayla Brown

Alumni, Behavioral and Brain Sciences Program

Kayla Brown is a fourth-year graduate student in the Behavioral and Brain Sciences program at the University of Georgia. She completed a B.S. in Psychology with College Honors at Louisiana State University. Her research interests include the effects of positive and negative emotions on decision-making tasks and how emotions affect the consumer decision-making process. She is a member of the Georgia Decision Lab under the mentorship of Dr. Adam Goodie.  

Julie Brisson

Alumni, Behavioral and Brain Sciences Program

Julie Brisson is a fourth-year graduate student in the Behavioral and Brain Sciences program at the University of Georgia. She completed a B.A. in Human Development and Family Sciences and a B.A. in Psychological Sciences at the University of Connecticut. Her research investigates relations between childhood adversity and physical health. She is a member of the Health and Development Laboratory under the mentorship of Dr. Katie Ehrlich.

Education:

M.S., Psychology, University of Georgia (2023)

B.A., Human Development and Family Sciences, Psychological Sciences, University of Connecticut (2021)

Other Affiliations: