The Efficacy of Auditory Integration Training: Summaries and Critiques of 28 Reports
(January, 1993 – August, 2004)
Stephen M. Edelson, Ph.D. and Bernard Rimland, Ph.D.

This table summarizes all research studies known to us that have investigated the efficacy of
AIT. These studies were published between January, 1993 and May, 2001 and have appeared in
peer-reviewed journals, professional newsletters, and/or were presented at professional
conferences. Twenty-six of the studies utilized subjects with autism, attention deficit/hyperactivity
disorder, central auditory processing disorder, and/or mental retardation. Two of the
studies evaluated the physiological effects of AIT on animals.

Table 1: Tabulation of Studies

(Number of Studies)



Results Unclear/
No Effectsa
Autism 13 1 (Bettison)
1 (Gillberg)
1 (Mudford et al.) 0
ADHD 4 0 0 0
CAPD 2 0 1 (Yencer) 0
Several Populations 2 0 1 (Zollweg et al.) 0
Animals (chicks) 2 0 0 0

a Note that none of the studies failed to show discernible benefits.

Of the 28 research studies that evaluated physiological, behavioral, and cognitive changes in the
subjects, the authors of 23 (82%) studies concluded that their data supported the efficacy of AIT,
three (11%) claimed to have found no evidence of efficacy, and two (7%) report ambiguous,
contradictory results.

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