John Constantino is Blanch F. Ittleson Professor of Psychiatry and Pediatrics at Washington University in St. Louis.
![](https://www.thetransmitter.org/wp-content/uploads/image-archive/images/authors/jconstantino.jpg)
John Constantino
Professor
Washington University in St. Louis
From this contributor
Q&A with John Constantino: Solving the biomarker conundrum
Biological factors that reflect autism’s roots may differ from those that influence how severe the condition is. Failure to make a distinction has stymied the search for biomarkers.
![Image shows two young girls, identical twins, covering their faces with leaves while facing each other.](https://www.thetransmitter.org/wp-content/uploads/2021/08/20210803-Biomarkers-844.jpg)
Q&A with John Constantino: Solving the biomarker conundrum
Traits of other conditions may spur autism
Early features of other conditions may contribute to autism itself
![Big baby plays with two connected rings while two scientists with clipboards look on.](https://www.thetransmitter.org/wp-content/uploads/2018/06/20180610-HawksVp1120.jpg)
Traits of other conditions may spur autism
Japanese spectrum
Researchers studying autism prevalence should take into account the continuous nature of autism symptoms in the general population, says John Constantino.
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