Stephen McCarthy — researcher, builder, writer
I'm a second-year PhD candidate at Maastricht University's Department of Data Analytics and Digitalisation, where I study how large language models shape strategic decision-making through experimental games — with a particular interest in measuring the impact on wellbeing and personal outcomes when AI is involved. Before the PhD, I completed a double master's in Work & Organisational Psychology and Business Intelligence & Smart Services, and an interdisciplinary bachelor's combining psychology, data science, and entrepreneurship — during which I led a 500-member student association and later chaired a national network representing liberal arts colleges with over 5,000 members. Outside of research, I build tools and platforms, make music, write, and am developing a tabletop strategy game called Memnassin.
Self-hosted experiment platform for studying dyadic negotiation with AI assistance. Pairs participants for real-time multi-round bargaining sessions with configurable LLM coaching, structured offer mechanics, and integrated pre/post surveys.
Interactive simulation of Axelrod's iterated Prisoner's Dilemma tournaments, featuring strategies from both original tournaments and follow-up papers. Visualises strategy performance head-to-head, with an upcoming page showcasing LLM tournament results.
Small utility for computing Pareto frontiers from simple option arrays — built to support multi-issue negotiation research.