In the early years of channel research there were many purely conceptual research articles. Table 3 shows the distribution of conceptual articles over time and across the selected research domains. Notably, the number of conceptual research publications has declined since the 1970s. Conversely, more than 75 percent of the conceptual articles in our database were published before the 1990s and only four have appeared within the last 14 years. This decline has occurred despite periodic calls for more conceptual research in channels-related areas, for example, Sheth (1996), and Roy, Sivakumar, and Wilkinson(2004), and is in keeping with the general diminution of the numbers of conceptual research papers in the academic marketing literature noted by Yadav (2010) and MacInnis (2011).A second insight from Table 3 is that the research domains of channel power-dependence relationships and channel structure and channel selection attracted the most conceptual research in the pre-1990s era while the domain of relational outcomes has received more attention since then. Lastly, no purely conceptual paper on channel negotiations figures in the articles database we have compiled.