The Bactra Review   Madness on the Couch
The well-known and frequently-cited (not to say frequently-published) study of the families of schizophrenics by Theodore Lidz and colleagues managed, incredibly, to commit both these elementary blunders. Partly on the basis of this work, Lidz became chairman of Yale's psychiatry department. See Dolnick's ch. 7 and the notes thereto.