1. Kelly, D. H. Oral vibrotactile sensation: An evaluation of children exhibiting normal articulation and children exhibiting defective articulation. Unpublished doctoral dissertation, Ohio University, 1973. 2._au]Telage, K. M. Measurement considerations in determining lingual vibrotactile thresholds: An analysis of interval and ratio scales. Paper presented at the New York State Speech and Hearing Association Convention, 1974.