Giuseppe (Joe) Labianca, Gatton Chaired Professor of Management, recently published "Negative Ties and Signed Graphs Research: Stimulating Research on Dissociative Forces in Social Networks" along with Nicholas M. Harrigan and Filip Agneessens. This was the introduction to the special issue of the Journal of Social Networks on negative ties and signed graphs which the three co-edited.
Harrigan, N. M., Labianca, G., & Agneessens, F. (2020). Negative ties and signed graphs research: Stimulating research on dissociative forces in social networks. Social Networks, 60, 1-10. https://doi.org/10.1016/j.socnet.2019.09.004