Marsha Siebenmorgen, Ph.D. Assistant Professor School Medical School Department Psychiatry Publications Featured Publications Perceptions of hostility by persons with and without persecutory delusions. Combs DR, Penn DL, Michael CO, Basso MR, Wiedeman R, Siebenmorgan M, Tiegreen J, Chapman D, Cogn Neuropsychiatry 2009 Jan 14 1 30-52 Results 1-1 of 1 1