Profile Details

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Hire Dr. Addison H.

United States

USD 105 /hr

Data’s Not Always Linear—And Neither Am I | Generalized Additive Models, Splines, & Advanced Statistical Modeling

Profile Summary

I’m a quantitative researcher, data scientist, and designer specializing in nonlinear modeling, Generalized Additive Models (GAMs), Bayesian statistics, machine learning, and advanced psychometrics. With over 5 years of experience as a Research Lab Manager and Consultant and over 10 years of experience in graphic design and marketing, I merge data science with design-thinking to create clear, compelling data visualizations, intuitive report layouts, and structured results presentations that drive understanding and impact. Put simply, I love big fancy models and stats--but I love being able to distill the most complex results down to clear and concise language for all to understand. I hold an MS in Quantitative Sciences and a PhD in Educational Psychology (cognate focus: Research Methods & Design), where my research focuses on curvilinear modeling, predictive analytics, and research design across social sciences, education, and public health. As prior Project & Lab Manager of the Research Design Studio (RDS), I have provided consulting on experimental design, mixed-effects modeling, and latent variable approaches to students, faculty, and external clients ranging from R1 universities, public school systems, state legislators, and more. My work has been published in peer-reviewed journals and presented at multiple international conferences, invited talks, and professional development sessions. Whether you need custom statistical modeling, data visualization, survey design, structured quantitative reports, or just need someone to help you know even where to begin (My absolute favorite work)! I bring a unique blend of analytical rigor and design expertise to ensure your insights are not only accurate but also visually intuitive and accessible. Specialties: Nonlinear & GAM modeling, Bayesian statistics, psychometrics, predictive analytics, machine learning, research method & design, scientific communication Tools: R (mgcv, brms, ggplot2, lme4), Python, Mplus, Stan, SQL, SPSS, Tableau, Adobe Creative Suite Industries: Social sciences, education, public health, business analytics Lastly, if you've read this far through my summary, shoot me a message! I will ALWAYS be upfront and honest about the work I take, and if I don't think I'm the best fit for you, I will happily make any necessary referrals or recommendations to get you closer to your goals.

Subject Matter Expertise

• ★ Data Analysis
• ★ Data Visualization
• ★ R
• ☆ Social Network Analysis
• ☆ Predictive Modeling & Analytics
• ☆ Data Exploration
• ☆ Cluster Analysis
• ☆ Data Collection
• ☆ Machine Learning
• ☆ Neural Networks
• ☆ Artificial Intelligence
• ☆ Deep Learning
• ☆ Data Storage
• ☆ Human Behavior & Psychology
• ☆ Cognitive Science
• ☆ Developmental Psychology
• ☆ Applied Psychology
• ☆ Learning & Memory
• ☆ Educational Psychology
• ☆ Analytical Psychology
• ☆ Human-Computer Interactions (HCI)
• ☆ Psychology of Creativity
• ☆ Human Services
• ☆ Social Work
• ☆ Cross Cultural Communication
• ☆ Visual Communication
• ☆ Cyberpsychology
• ☆ Evaluation Methodology
• ☆ Educational Statistics
• ☆ Academic Testing
• ☆ Higher Education
• ☆ Teacher Education
• ☆ Python
• ☆ SPSS
• ☆ SQL
• ☆ Excel
• ☆ SAS
• ☆ STATA
• ☆ Tableau
• ☆ Counseling & Mental Health Support
• ☆ Anxiety Disorders
• ☆ ADHD
• ☆ Medical Equipment & Supplies
• ☆ Graphic Design

Services

• Research
• Consulting
• Data & AI

Research User Research, Systematic Literature Review

Consulting Scientific and Technical Consulting

Data & AI Predictive Modeling, Statistical Analysis, Data Visualization, Data Cleaning, Data Processing, Data Insights

Work Experience

Core/Founding Researcher

The Lost & Found Research Lab

March 2023 - Present

Graduate Research Assistant

Ball State University Teachers College

August 2021 - Present

Lab & Project Manager

Research Design Studio

August 2021 - January 2025

Advanced Research Methodologist

Private Company

August 2020 - January 2025

Education

PhD Educational Psychology

Ball State University

August 2020 - May 2025

Masters of Science

Ball State University

August 2023 - May 2024

Bachelors

Bellevue University

January 2019 - January 2020

Certifications

• ASIST Certification

  ASIST

  January 2020 - Present

• Psychological First Aid

  National Child Traumatic Stress Network

  January 2018 - Present

• Mental Health First Aid

  National Child Traumatic Stress Network

  January 2018 - Present

• Certified Crisis Counselor

  American Association of Suicidology

  May 2019 - May 2024

Publications

JOURNAL ARTICLE

Addison Helsper, Lillian DeShon, Laura E. Boylan, James Galliher, Lisa DaVia Rubenstein (2025). Under Pressure: Gifted Students’ Vulnerabilities, Stressors, and Coping Mechanisms Within a High Achieving High School . Behavioral Sciences.

Addison Helsper, Lillian DeShon, Laura E. Boylan, James Galliher, Lisa Rubenstein (2025). Under Pressure: Gifted Students’ Vulnerabilities, Stressors, and Coping Mechanisms Within a High Achieving High School . Behavioral Sciences.

C. Addison Helsper, Hannah B. Faiman, W. Holmes Finch, Jerrell Cassady (2025). Nothing means anything if everything means something: exploring the issues of coping profiles and the person-centered approach . Anxiety, Stress, & Coping.

Jerrell C. Cassady, Addison Helsper, Quinton Quagliano (2024). The Collective Influence of Intolerance of Uncertainty, Cognitive Test Anxiety, and Academic Self-Handicapping on Learner Outcomes: Evidence for a Process Model . Behavioral Sciences.

Jerrell Cassady, Addison Helsper, Quinton Quagliano (2024). The Collective Influence of Intolerance of Uncertainty, Cognitive Test Anxiety, and Academic Self-Handicapping on Learner Outcomes: Evidence for a Process Model . Behavioral Sciences.