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Hire Dr. Cullin H.

United States

USD 150 /hr

PhD Quantitative Methodologist | SEM, Longitudinal & Multilevel Modeling | Behavioral & Social Science Research

Profile Summary

I am a PhD-trained quantitative methodologist and behavioral scientist specializing in advanced statistical modeling for social and behavioral research. My work focuses on helping researchers design rigorous studies, implement complex statistical analyses, and translate results into clear, publishable findings. I have extensive experience collaborating with interdisciplinary research teams and providing methodological guidance across a wide range of projects. My methodological expertise includes structural equation modeling (SEM), multilevel and hierarchical models, longitudinal data analysis, causal inference approaches, meta-analysis, and psychometric modeling. I regularly work with large observational and experimental datasets and have experience developing reproducible analytic workflows in R and other statistical software. My research has been published in leading journals in developmental science, psychology, and interdisciplinary research. I have supported projects involving large-scale developmental datasets, survey and administrative data, and physiological and neurodevelopmental measures. In addition to conducting statistical analyses, I assist clients with research design, statistical analysis plans, model troubleshooting, reviewer responses, and interpretation of complex models. I am particularly interested in collaborating on projects related to social science, psychology, education, and public health research. Whether you need help developing a statistical approach, implementing advanced models, or strengthening the analytic rigor of a manuscript or grant proposal, I aim to provide clear guidance and practical solutions that move projects forward efficiently. Typical services I provide include: • Structural equation modeling (SEM) • Longitudinal and multilevel modeling • Meta-analysis and evidence synthesis • Causal inference and observational data analysis • Statistical consulting for manuscripts and grant proposals • Advanced statistical modeling in R and Mplus

Subject Matter Expertise

• ☆ Statistics
• ☆ Meta-Analysis
• ☆ Human Behavior & Psychology
• ☆ Child & Adolescent Psychology
• ☆ Family Psychology
• ☆ Developmental Psychology
• ☆ Child Development
• ☆ Fatherhood
• ☆ R
• ☆ Magnetic Resonance Imaging (MRI)
• ☆ Electrocardiogram (ECG)
• ☆ Hypothesis
• ☆ Peer Review
• ☆ Research Methodology
• ☆ Survey Design & Methodology

Services

• Writing
• Research
• Consulting
• Data & AI

Writing Technical Writing

Research Meta-Research, Scientific and Technical Research, Systematic Literature Review, Secondary Data Collection

Consulting Scientific and Technical Consulting

Data & AI Predictive Modeling, Statistical Analysis, Data Visualization, Big Data Analytics, Data Insights

Work Experience

University of Georgia

- Present

Postdoctroral Researcher

The Georgia Center for Developmental Science

October 2025 - Present

Senior project manager

Tenshon

October 2016 - May 2019

Education

PhD

University of Georgia

August 2021 - December 2025

Master of Science

University of Georgia

August 2021 - July 2024

Bachelor of Science

Arizona State University

August 2019 - May 2021

Certifications

• Social & Behavioral Research (Human Subjects)

  CITI Certification

  August 2021 - August 2026

• Research with Children

  CITI Certification

  August 2021 - August 2026

• Responsible Conduct of Research

  CITI Certification

  August 2021 - August 2026

Publications

JOURNAL ARTICLE

Assaf Oshri, Cullin J. Howard, Steven M. Kogan, Linhao Zhang, Charles F. Geier, Brian W. Bauer, Ellen House (2025). Neurobehavioral pathways linking socioeconomic status hardship to suicide risk versus resilience in young adolescents: the roles of sleep health and default mode network connectivity . Translational Psychiatry.

Cullin J. Howard, Assaf Oshri, Noel Card, Morgan Muñoz, Clare R. Thomas, Geoffrey L. Brown (2025). Perceived Mother and Father Parenting and Adolescent Social Anxiety Symptoms: A Meta-Analysis . Adolescent Research Review.

Alp Aytuglu, Clare R. Thomas, Cullin J. Howard, Yating Huang, Jonique Y. Freeman, Kalsea J. Koss, Niyantri Ravindran, Geoffrey L. Brown (2025). Prenatal readiness for fatherhood, paternal engagement, and child social–emotional competence . Developmental Psychology.

Assaf Oshri, Cullin J. Howard, Linhao Zhang, Ava Reck, Zehua Cui, Sihong Liu, Erinn Duprey, Avary I. Evans, Rabeeh Azarmehr, Charles F. Geier (2024). Strengthening through adversity: The hormesis model in developmental psychopathology . Development and Psychopathology.