Are the bipolar disorders best modelled categorically or dimensionally?

Objective Considerable debate exists as to whether the bipolar disorders are best classified according to a categorical or dimensional model. This study explored whether there is evidence for a single or multiple subpopulations and the degree to which differing diagnostic criteria correspond to bipolar subpopulations. Method A mixture analysis was performed on 1081 clinically diagnosed (and a reduced sample of 497 DSM ‐ IV diagnosed) bipolar I...