There has been considerable time and effort invested by hundreds of people in attempting to demonstrate a return on investment for communication — advertising, marketing, public relations, and social media. It began as far back as, well, since someone first realized it might be measurable. In fact, any search on the subject will turn up any number of efforts, with some providing better explanations than others.
For my own part, I've been working, on and off, to refine a measurement formula for the better part of two years. My hypothesis is simple: the return on investment is related to the intent of the communication and the outcome it produces.
I | O = ROI
However, since last year, there have been several people who have noted that ROI means something different to business. In finance, for example, ROI means the ratio of money gained or lost (realized or unrealized) on an investment relative to the amount of money invested. When considering that definition, it becomes reasonably clear that ROI might be the wrong term for communication measurement, especially because not all communication produces outcomes that yield direct returns.
While this doesn't change the hypothesis, it does place a greater emphasis on establishing the connection between direct and indirect results because if we narrow the definition to only recognize direct returns, the greater portion of any communication plan will be diminished and working professionals will continue to misidentify incidentals such as conversations outcomes. Instead, I propose the real measure of communication is exactly that — the return on communication or ROC.
[(B • I) (m+s • r)/d] / [O/(b + t + e)] = ROC
For the next several Mondays, I will be writing a series about the above formula as illustrated within a free 5-page abstract, Measure: I | O = ROC a.k.a. The ROC, which defines a revised formula for communication measurement across advertising, marketing, public relations, internal communication, and social media. It has already been proven effective in measuring individual communication and ongoing campaigns.