Can network analysis of self‐reported psychopathology shed light on the core phenomenology of bipolar disorders in adolescents and young adults?
Résumé
Objectives: Network analysis is increasingly applied to psychopathology research. We used it to examine the core phenomenology of emerging bipolar disorder (BD I and II) and ‘at risk’ presentations (major depression with a family history of BD).Methodology: The study sample comprised a community cohort of 1867 twin and nontwin siblings (57% female; mean age ~26) who had completed self- report ratings of (i) depression- like, hypomanic- like and psychotic- like experiences; (ii) family history of BD; and (iii) were assessed for mood and psychotic syndromes using the Composite International Diagnostic Interview (CIDI). Symptom networks were compared for re-cent onset BD versus other cohort members and then for individuals at risk of BD (depression with/without a family history of BD).Results: The four key symptoms that differentiated recent onset BD from other co-hort members were: anergia, psychomotor speed, hypersomnia and (less) loss of con-fidence. The four key symptoms that differentiated individuals at high risk of BD from unipolar depression were anergia, psychomotor speed, impaired concentration and hopelessness. However, the latter network was less stable and more error prone.Conclusions: We are encouraged by the overlaps between our findings and those from two recent publications reporting network analyses of BD psychopathology,
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