An experiment assessed the potential effectiveness of "dual audio television instruction" (DATI) as a mass education medium. The DATI consisted of a radio program heard by children while they watched television shows. The audio instructor did not talk when the television characters spoke, but used the "quiet" times to help with reading, define vocabulary, explain concepts, and point out problem solving processes. The study used children from 70 homes. The control group watched television programs as they normally would, whereas the experimental group was exposed to DATI. The results showed that the technical arrangements were feasible, that the children exposed to DATI voluntarily accepted it, and that they learned significantly more reading, vocabulary, and process skills than did the control group. The experimental group also talked more during the show and made more cognitively complex comments. (PB)