Abstract
The rationale for the integration of Operant Conditioning and Audiometric techniques is first described. Two short-comings limit the effectiveness of tests currently available: (1) rewards at present used are either/too complicated for routine use (token reinforcers) or tend to satiate readily (visual and food reinforcers) and hence to lose testee interest; (2) procedures currently available require an auditory response at test outset. Where response to sound is not part of an everyday behavioural repertoire, association of sound stimulus to response may be difficult. An apparatus which attempts to overcome these deficiencies by using a cumulating visual reinforcer and other-sense facilitation of response is described.