External Collaboration. Ian Robertson, Trinity CollegeBrian Lawlor, Trinity CollegeFergus Craik, University of TorontoLynn Hasher, University of TorontoJochen Kaiser, Frankfurt UniversityKurt Fischer, Harvard UniversityAlex Zautra, Arizona State UniversityMary Davis, Arizona State UniversityRichard Roche, NUI MaynoothDon Barry, University of LimerickTim Van Gelder, University of MelbourneUlman Lindenberger, Max Planck Institute, BerlinBenjamin Broome, Arizona State UniversityRoger Staff, University of AberdeenBrendan Bunting, University of Ulster, Magee campusIan Deary, Edinburgh University