A study by Scaglione, Giovannetti and Hamoudia (2015) based on the Bass and Bemmaor diffusion models showed that the distribution of the times to adoption of mobile social networking in four G7 countries was skewed to the left in most cases. Reanalyzing the data and extending the study to two additional countries, the authors show that the skewness tends to be to the right, thereby indicating a large proportion of laggards in the population of potential users. Link to the article
BEMMAOR, A. and ZHENG, L. (2018). The Diffusion of Mobile Social Networking: Further Study. International Journal of Forecasting, 34(4), pp. 612-621.