Abdullah Almaatouq , Laura Radaelli, Alex Pentland, Erez Shmueli, ‘Are You Your Friends’ Friend? Poor Perception of Friendship Ties Limits the Ability to Promote Behavioral Change’, http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0151588, http://dx.doi.org/10.1371/journal.pone.0151588, PLOS ONE (March 22, 2016).
The directionality of friendship ties affect the extent to which individuals can influence the behavior of each other. Moreover, we find that people are typically poor at perceiving the directionality of their friendship ties and that this can significantly limit their ability to engage in cooperative arrangements. This could lead to failures in establishing compatible norms, acting together, finding compromise solutions, and persuading others to act. (…) We find that almost half of the friendships are actually non-reciprocal.