McDougall worked to enlist a number of scientific, religious, ethical, political and philosophical issues and causes into a wide “actor-network” which finally pushed through the institutionalization and professionalization of parapsychology (Asprem, 2010). He was also a member of the "Scientific American" committee that investigated the medium Mina Crandon. He attended séances with the medium and was sceptical about her "ectoplasmic hand". He suspected that it was part of an animal, artificially manipulated to resemble a hand. McDougall's suspicion was confirmed by independent experts who had examined photographs of the hand.