Welcome

Hi, I’m Themis Nikolas Efthimiou, a quantitative researcher dedicated to addressing complex social and behavioural questions. My work involves applying rigorous statistical methods and innovative tools to translate complex human data into evidence-based insights for policy and strategy.

About Me

My research journey has been focused on developing and applying quantitative methods to understand the nuances of human experience.

During my PhD at the University of Essex, I specialised in experimental design and advanced statistical analysis. I managed a four-year research programme that involved directing randomised controlled trials (RCTs) and developing novel methodologies. This work provided robust empirical evidence to test and refine a foundational theory in emotion science.

As a Postdoctoral Researcher at the University of Edinburgh, I focused on the dynamics of neurodiverse social interactions. I led end-to-end analysis projects on complex, multimodal datasets and engineered new data processing systems. To support the wider research community, I also developed and published 'duet', an R package on CRAN that enhances the transparency and reproducibility of social interaction research.

Having completed my postdoctoral position, I am now seeking new opportunities where my analytical skills can contribute to evidence-based solutions in either an academic or applied setting.

Areas of Expertise

My expertise spans research methodology, technical implementation, and deep domain knowledge.

Statistics & Research Methods

  • Mixed-Effects Modelling & Bayesian Analysis
  • Randomised Controlled Trial (RCT) Design
  • Experimental & Survey Design (Qualtrics, PsychoPy)
  • Power Analysis & A/B Testing
  • Qualitative Data Coding & Analysis

Programming & Technology

  • R: Expert (Tidyverse, lme4, Shiny, R Package Development)
  • Python: Proficient (Pandas, NumPy, OpenCV, Scikit-learn)
  • Data Visualisation: ggplot2, R-Shiny
  • Project Tools: Git, Quarto, SQL

Domain Knowledge

  • Behavioural Data Science
  • Social Interaction & Neurodiversity
  • Emotion Science & Human Perception

Projects & Portfolio

Here you can find a portfolio of my work, including publications, software, and project reports. My research is designed not only to advance scientific understanding but also to build and validate tools with real-world applications.

Let’s Connect

I am open to discussing new opportunities, potential collaborations, or interesting projects that aim to make a positive impact. Please feel free to explore my CV, review my work on GitHub, or contact me directly at themiftw20@gmail.com.

Bridging behavioural science and public good through data-driven research.