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Super-massive black holes have been discovered in the centres of many galaxies.Theories of the formation mechanisms of these objects and extrapolation of empirical scaling relations predict that intermediate-mass black holes(IMBHs)could exist in the centres of globular clusters(GCs).Finding an IMBH in a GC,or proving its absence,is a crucial ingredient in our understanding of galaxy formation and evolution.The challenge is to identify a signature of an IMBH that cannot be accounted for by different processes.Observational claims of IMBH detections are often based on analyses of the kinematics of stars,such as a rise in the velocity dispersion profile towards the centre.In this contribution we discuss the degeneracy between this IMBH signal and pressure anisotropy in the GC.