RUNNING HEAD: NETWORK INTERPLAY BETWEEN ANXIETY, DEPRESSION AND STRESS Bridges over troubled waters: Mapping the interplay between anxiety, depression and stress through network analysis of the DASS-21 Nathan Van den Bergh 1 , Igor Marchetti 2 & Ernst H.W. Koster 3 1,3 Department of Experimental Clinical and Health Psychology, Ghent University, Ghent, Belgium 2 Department of Life Sciences, University of Trieste , Trieste, Italy Note: Nathan Van den Bergh and Igor Marchetti contributed equally to the manuscript and share first authorship. 1 Corresponding author Department of Experimental Clinical and Health Psychology, Ghent University Henri Dunantlaan 2, B-9000 Gent, Belgium +32 9-264-94-14 e-mail: Nathan.VandenBergh@UGent.be 1 https://orcid.org/0000-0002-5592-6682 Twitter: @Nathan_VdBergh 2 https://orcid.org/0000-0002-4709-7941 3 https://orcid.org/0000-0003-0792-476X Twitter: @ernst_koster