The Mestelman & Muller McMaster Decision Science Laboratory (McDSL) is a multi-purpose research facility at McMaster University, specializing in empirical research on human decision-making in controlled environments.

McDSL offers several adaptable spaces with advanced technology, supporting both quantitative and qualitative research with human participants. Our facilities include:

• An advanced Experimental Computer Suite with 22 networked computers, ideal for controlled decision-making experiments.
• A spacious Focus Group Room with HD video recording capabilities, suited for qualitative observation and group market research, along with an adjacent viewing room.
• Two private Interview Rooms with HD recording, designed for one-on-one interviews.
• HTC Vive wireless VR headsets and high-performance custom-built computers for running virtual reality decision-making experiments.

For over 30 years, we have upheld traditional laboratory-based experimental and observational methods pioneered at the McMaster Experimental Economics Laboratory—one of the first such laboratories in the world, established in 1994. At the same time, McDSL leads innovation in cutting-edge research on human decision-making and online studies.

We support researchers from universities and private industries interested in leveraging computerized experimental and high-tech observational methods to explore decision-making.

Researchers from all fields are welcome to collaborate with us. McDSL is fully operational, offering both in-person sessions and online research. The laboratory is led by Academic Director Professor Bradley Ruffle.