Research problems included inadequate testing procedures, poor experimental design, and nonrepresentative samples of juvenile delinquents. Two original conceptions citing a direct link between LD and JD, with LD being a primary causative factor in JD, have not been completely supported by the data. Some self-report data from the same research does not support the two common hypotheses about the LD/JD link: the 'school failure' and the 'susceptibility' hypotheses. The possibility of differential treatment of LD youths in the courts has been proposed. Intervention approaches should be effective in reducing the incidence of delinquent activity among LD youths. Other questions concerning confronting researchers are mentioned. About 30 references are provided.