Mentally retarded children with specific traits of cognition and language have been difficult
to communicate by speaking and to have clearness of pronunciation in low rates. The purpose
of this study is tried to observe to improve both ability of speaking language and articulation
for children with mental retardation by using Video Feedforward. This program has applied to
3 children all in 5th to 6th grade of elementary school based on multi probe across subjects.
So as to check to learn, the degree of speaking language has used to a making checklist
related to target sentences. The improving degree of articulation has tested by SIT(Speech
Intelligibility Test) one time after every two sessions, and the data for SIT has analyzed to
focus on the type of articulation errors which are consisted of omit, articulation method, air
current error, etc. The result of this study showed the follows. First, sentences direction in using Video Feedforward has became speaking language with a structure like a this 'the subject+the object+verb'. Second, particularly articulation method of the type of articulation errors have improved as articulation clearness of sentences have advanced.
Consequently, Video Feedforward gave a active motivation of study to mentally retarded
children and suggested a possibility of improving both speaking language and articulation.