Along with Martin Seligman, Rosenhan believed that there are seven main features of abnormality: suffering; maladaptiveness; vividness and unconventionality; unpredictability and loss of control; irrationality and incomprehensibility; observer discomfort; and violation of moral and ideal standards.
Kao i Martin Seligman, i Rozenhan je verovao da postoji 7 glavnih osobina abnormalnosti: patnja, mala adaptivnost, živopisna mašta i nekonvencionalnost, nepredvidljivost i gubitak kontrole, iracionalnost i nerazumljivost, neugodnost posmatrača i kršenje moralnih i idealističkih standarda.