The paper “Social influence preserves cooperative strategies in the conditional cooperator public goods game on a multiplex network” co-authored by James Allen, Anne Skeldon, and Rebecca Hoyle has been published in Physical Review E.  The paper came out of James Allen’s PhD thesis (completed in 2017), supervised by Anne and Rebecca.  James is now a postdoc in the Department of Zoology at Cambridge (link here).  Rebecca is a former Professor at Surrey, now Professor at Southampton.  A link to the published paper with abstract is here.  The picture left is Figure 7 from the paper and shows the mean strategy plotted against the scaled enhancement factor for conditional cooperators on the multiplex.