The State of Iowa settled the lawsuit in 2007 for $925,000—a fraction of what was sought, but an official acknowledgment of wrongdoing. The university did not admit liability but expressed "deep regret" for the pain caused. The Monster Study is now a foundational case in the history of research ethics. It directly contributed to the creation of modern Informed Consent rules and the necessity of Institutional Review Boards (IRBs). Today, no university would ever approve an experiment that intentionally harms children, especially by trying to induce a psychological disorder.
Johnson vehemently disagreed with the prevailing medical model of the time, which blamed stuttering on biological or genetic defects. He proposed a radical alternative: the . Johnson believed that stuttering wasn't an inborn affliction, but a learned behavior caused by the way adults (especially parents) reacted to normal, disfluent childhood speech. He argued that labeling a child’s natural hesitations and repetitions as a "problem" created anxiety, which then triggered a self-fulfilling prophecy of real stuttering. monsterxxxperiment
Mary Tudor concluded her thesis with a disturbing observation: The experiment had succeeded in creating "a condition in the child which seems to be the beginning of a real stuttering problem." The State of Iowa settled the lawsuit in
The study was complete. But then—nothing happened. The results were never formally published. Wendell Johnson moved on to a long, distinguished career, authoring textbooks and becoming a beloved figure in speech pathology. Mary Tudor became a teacher. The orphanage's records were sealed. For over 60 years, the "Davenport Experiment" remained a secret, buried in the University of Iowa's archives. It directly contributed to the creation of modern
The "Monster Study" stands as a dual monument: a cautionary tale about the ends justifying the means, and a reminder that even good theories can be proven through evil experiments. The 22 children of the Soldiers and Orphans Home paid the price for scientific knowledge they never volunteered to give. And their stammers, for many, never went away.