Barab, S. A. (2014). Design-based research: a methodological toolkit for engineering change. In K. Sawyer (ed.) Handbook of the Learning Sciences, Vol 2, (pp. 233-270), Cambridge, MA: Cambridge University Press.
Design-based research (DBR) is a subject close to my heart, because it was the basis of my masters thesis, and informs the work of the NYU Music Experience Design Lab. All of our tools are designed and tested in the context of messy and complex natural learning and creating environments: classrooms, bedrooms, studios, and public events. We evaluate our tools continuously, but the only purely empirical and “experimental” methods we use involve Google analytics. We sometimes conduct user research in formal settings, but mostly observe practice “in the wild” between regular iterations.