I have previously written about psychomotor patterning – an alleged treatment for developmental delay that was developed in the 1960s. The idea has its roots in the notion of ontogeny recapitulates phylogeny, that as we develop we progress through evolutionary stages. This idea, now largely discredited, was extended to the hypothesis that in children who are developmentally delayed their neurological development could be enhanced if they were made to progress through evolutionary stages. Children were put through hours a day of passive crawling, for example, with the belief that this coax the brain into a normal developmental pathway. The treatment was studied extensively in the 1970s showing that the treatment did not work.
However, those who developed this treatment, Doman and Delecato, did not want to give up on their claim to fame simply because it didn’t work and the underlying concepts were flawed. For the last 40 years they have continued to offer the Doman-Delecato treatment for all forms of mental retardation, surviving on the fringe, all but forgotten by mainstream medicine (except by those with an interest in pathological science).
I was recently asked to look into the claims for a disorder known as pyroluria, and what I found was very similar to the history of psychomotor patterning. There was some legitimate scientific interest in this alleged condition in the 1960s. Studies in the 1970s, however, discredited the hypothesis and it was discarded as a failed hypothesis. The published literature entirely dries up by the mid 1970s. But the originators of the idea did not give up, and continue to promote the idea of pyroluria to this day.