“…Such pathways may include follow-up studies of general population samples (Cannon et al, 2002), familial high risk samples (Duffy et al, 2009;Egeland et al, 2012), university student samples (Alloy et al, 2012;Kwapil et al, 2000) and clinical samples including baseline diagnoses such as depression, ADHD, anxiety, BPD etc. The variability may also be in the instruments utilized to assess phenomenological, diagnostic, temperamental, behavioral and even biological characteristics in the months and years preceding BD onset.…”