There are perhaps a dozen different tests for recruitment, at least four of which are in relatively common use, and all of which require the use of an audiometer or more complicated apparatus.1,2 However, for at least four years, I have been using what has been for me a very simple and reliable test for recruitment. It can be used in all instances in which one ear is normal or near normal, and requires only 30 to 45 seconds to perform the entire test. In all cases subsequently studied by the alternate loudness balancing test,3 a positive result was confirmed. On a few occasions, in patients in whom I did not feel recruitment existed it was by more accurate testing found to be present to a very slight degree. However, the reverse has not yet been noted.
The test is a rough one and necessarily qualitative, and thus
CHANDLER JR. A Simple and Reliable Tuning-Fork Test for Recruitment. AMA Arch Otolaryngol. 1958;67(1):67–68. doi:10.1001/archotol.1958.00730010071013
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