“…This flowed from the focus of B. F. Skinner on the quantitative and qualitative assessment of the factors that control the behavior of organisms (e.g., Skinner, 1938Skinner, , 1953Skinner, , 1969. Rigorous application of Skinner's approaches to pharmaceutical research with high standards of reliability, validity, and generalizability were then provided by Skinner-influenced early leaders including Joseph Brady (1958; see also Thompson, 2012);Peter Dews (1955a, 1955b; see also Barrett & Bergman, 2008), Murray Sidman (1960), and Travis Thompson and Charles Schuster (e.g., 1968). Thompson and Schuster are mentioned together because of their classic coauthored articles and book (Schuster & Thompson, 1962;Thompson & Schuster, 1964, 1968) and because they also exemplify the genius and creative power that can volcanically emerge from the fortuitous pairing of individuals who are brilliant in their own right (Shenk, 2014).…”