Understanding Interdisciplinary Collaborations as Social Networks

The dynamics of interdisciplinary collaboration invite further investigation if we are to make this endeavour more rewarding
and productive. We are using social network analysis to track the development of a new interdisciplinary collaboration on
complex interventions to improve population health. It involves nineteen scholars across four countries. We report the Baseline
network of formal relationships among the scholars, along with the impact of the collaboration on these relationships in the
first 18 months. We observed statistically significant increases in the density of six types of relationship networks: citing
publications by other members of the collaboration, email contact, meeting with each other (outside of the formal annual meeting),
visiting one another’s institution, submitting research grants together and working on research projects together. The initial
strategic role in the network of key ‘gate keepers’ has not altered substantially (betweenness centralization of the networks),
but reciprocity has increased, that is, people are more likely to cite those who have cited them and work together. Increased
collaboration is also reflected in the rise in number of subgroups over time and the increase in the average number of subgroup
memberships. Use of social network analysis to understand the dynamics of interdisciplinary collaborations is a relatively
new field. It invites reflection about what the optimal network structures for interdisciplinary collaborations would look
like.