SERIES OF EIGHT CONSECUTIVE AND RELATED EXPERIMENTS WERE COMPLETED. THESE WERE PART OF THE DEVELOPMENT AND QUANTIFICATION OF VIBROTACTILE CONDITIONING PROCEDURES THAT LED TO THE MEASUREMENT OF HEARING IN DEAF AND HEARING SUBJECTS RANGING IN AGE FROM ADULTS TO AS YOUNG AS 2 AND 1/2 YEARS. A MODIFICATION OF THE RADIOEAR B-70A BONE CONDUCTION TRANSDUCER WAS COUPLED WITH THE GRASON-STADLER E-800 AUDIOMETER TO PROVIDE A PROGRAMED STIMULUS USED TO INSTRUCT, NONVERBALLY, DEAF AND HEARING SUBJECTS TO PERFORM STANDARD BEKESY AUDIOMETRY. CROSS-MODALITY STIMULUS GENERALIZATION FROM A VIBROTACTILE TO AN AUDITORY STIMULUS WAS FOUND TO TAKE PLACE ROUTINELY IN ALL AGE GROUPS ABOVE 5 YEARS. THE PROCEDURE USED A MODIFICATION TO THE E-800 AUDIOMETER THAT ALLOWED A SINGLE PRESS OF THE RESPONSE SWITCH BY THE SUBJECT TO MEASURE ONE'S ASCENDING THRESHOLD. A TOTAL OF 213 SUBJECTS WAS USED IN THIS PROJECT. ANALYSIS OF RESULTS INCLUDED PARAMETRIC AND NONPARAMETRIC STATISTICS USING THE ANALYSIS OF VARIANCE APPROACH. (HB)