The role of reading retardation as a factor in juvenile delinquency was examined in a study which sought (1) to determine a correlation between retardation over a 5-year period and (2) to observe any changes which might have occurred in the relationship since a 1915 study. Boys committed to a St. Paul, Minnesota, boys' residential treatment center over a 5-year period from 1966 to 1971 were used as subjects. Interviews; intelligence, reading, arithmetic, and spelling tests; and personality inventories administered at the time of referral to the center provided data for analysis. The results indicated that reading grade levels of delinquents remained stable over the 5-year period and showed consistent retardation. Little change in the relationship between retardation and delinquency could be found since 1915. It was concluded that while retardation cannot be said to be a cause of delinquency, it is felt that remediation may be a factor in rehabilitating delinquents. Tables and references are included. (MS)