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Hire Kevin K.

United States

USD 40 /hr

PhD Statistical Consultant | Mixed Effects Models, Scale Development, & Experimental Design in R

Profile Summary

I am a PhD-level researcher specializing in advanced statistical modeling, experimental design, and psychometric scale development. My expertise lies in analyzing complex behavioral and decision-making data using rigorous, publication-ready methods. I regularly work with hierarchical and longitudinal datasets and have extensive experience with mixed-effects modeling (multilevel models), logistic regression, ordinal and multinomial models, structural equation modeling (CFA/EFA), item response theory (IRT), and scale validation procedures. I am highly proficient in R and frequently develop reproducible analytic workflows for academic manuscripts, dissertations, and grant-funded research. My research background includes large-scale behavioral experiments, survey-based measurement development, and risk-related decision-making tasks. I have designed and analyzed multi-factor experimental studies, conducted cross-validation procedures for scale development, and implemented Bayesian and frequentist modeling frameworks.

Subject Matter Expertise

• ★ Data Visualization
• ☆ Data Analysis
• ☆ Machine Learning
• ☆ Data Cleaning
• ☆ Applied Psychology
• ☆ SPSS
• ☆ Excel
• ☆ R
• ☆ Markup Languages

Services

• Research
• Data & AI

Research Systematic Literature Review

Data & AI Predictive Modeling, Statistical Analysis, Image Analysis, Algorithm Design-ML, Data Visualization, Data Cleaning, Data Insights

Work Experience

Research Assistant

University of Southern California

- Present

Data Analyst and Statistician

Department of Justice

June 2025 - Present

Statistican

Department of Homeland Security

May 2024 - August 2024

Education

PhD

University of Southern California

May 2022 - Present

Certifications

• Certification details not provided.

Publications

JOURNAL ARTICLE

Kevin Kapadia, Yunxiu Tang, Richard John (2026). Jokers in the deck: A new temperature setting for the Columbia Card Task . Behavior Research Methods.

Kevin Kapadia, Ian Unson, Katie Byrd, Jun Zhuang, Richard John (2025). Behavioral validation for a game‐theoretic model of attacker strategic decisions, signaling, and deterrence in multi‐layer security for soft targets . Risk Analysis.

Kevin Kapadia, Ajay Mittal, Suhaiba Huq, Jonathan Wakim, Tung Wynn (2025). The Feasibility and Acceptability of a Stand-Alone Virtual Reality Headset on Perceived Pain and Anxiety During Bone Marrow Biopsies: Mixed Methods Pilot Study . JMIR XR and Spatial Computing.

Kevin Kapadia, Katie Byrd, Adam Rose, Richard John (2025). Balancing security and inconvenience: Perceptions of countermeasures in U.S. commercial facilities . Risk Sciences.

PREPRINT

Kevin Kapadia, Nutchanon Yongsatianchot, Katie Byrd, Stacy Marsella, Richard John (2025). The Impact of Social Influence and Threat Uncertainty on Behavior in a School Shooting Simulation .

Kevin Kapadia, Suhaiba Huq, Ajay Mittal, Jonathan Wakim, Tung Wynn (2024). The Feasibility and Acceptability of a Stand-Alone Virtual Reality Headset on Perceived Pain and Anxiety During Bone Marrow Biopsies: A Mixed Methods Study (Preprint) .