A more recent look at the prevalence of stuttering in the United States

Data was requested from 50 states and 5 protectorate-trusteeships on: (1) the total school enrollment and (2) the number of stutterers identified each year between 1964–1973. The data are interpreted with reference to past prevalence figures. Trends within the 1964–1973 period are discussed. The study lends support to Van Riper's predicted declining prevalence of stuttering, yet there was no significant changes in incidence over the 10 year period.