Thesis (Ed.D.)--Boston University / PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you. / The purpose of this study was to determine the efficacy of a Home Language Program on the oral expressive skills of educable mentally retarded (EMR) children attending special classes at the primary level. It sought to answer the following questions: 1. Will there be a statistically significant increase in the verbal fluency of educable mentally retarded children in terms of an increase in vocabulary, number of concepts expressed, and mean length of response (MLR) as a result of a Home Language Program? 2. Will there be a statistically significant increase in the total verbal output of educable mentally retarded children (EMR) as a result of a Home Language Program? / 2031-01-01