Van Os, who opposes the creation of a new diagnostic category, said that the best hope for early intervention in psychotic
disorders resides in public health measures for the population as a whole rather than in attempts to diagnose risk in individuals
for what will be a low incidence of future psychosis. "Creating a diagnostic class that does not unambiguously define a specific
group, treatment, or outcome does not add value for patients and their families," van Os wrote.