“Borderline Personality Disorder and Transitional Objects”, Lauren D. Laporta1997-10 (security blanket (BPD))⁠:

[Cardasis et al 1997] …confirms the unscientific and casual observations of myself and other members…It has become so common for us to see patients who are admitted with either blankets or stuffed animals and whose axis II diagnosis is later confirmed that we have come to refer to the presence of these items as a positive bear sign…those brought from home…often correlate with a more severe pathology [of borderline personality disorder].

These findings (often snickered over in morning report) are, as Cardasis et al 1997 purport, often important observational clues that aid in the diagnosis and treatment of these difficult and challenging patients.