Random Gap Detection Test (RGDT) – Standard

The Random Gap Detection Test-Standard (RGDT) is an auditory processing disorder test for ages 5 and up using non-verbal stimuli. It is considered a temporal test using temporal resolution and is sensitive to cortical particularly left temporal lobe lesions.

This test is a variation on the AFT-R.  It differs from the AFT-R:  First, in the AFT-R, the stimulus presentations are in serial order from no gap to large gap and back to no gap, often resulting in perseveration in some subjects.  Since randomization successfully eliminates the problem of perseveration, the RGDT gap duration presentations of the stimuli are randomized.  Second, the number of test frequencies has been reduced to four.  Third, Click stimuli have been added. The developer states it takes approximately 10 minutes to administer and score the RGDT.

The Random Gap Detection Test-Standard (RGDT) includes a) audio recording, and b) manual and score forms as printable pdf files. The 31-page manual is comprised of sections on development, background, administration, and interpretation. It includes normative data for ages 5-7, 8, 9, and 10-11. The developer recommends using the normative data for the 10-11 age category as a guideline for testing patients older than 11. (Normative values for the AFT-R are included for ages 5-70 due to their similarity.) Available from Auditec, Inc.  Call 1-800-669-9065 (from US) or 314-416-1050 (outside the US) to order. FREE shipping to contiguous US locations.

Random Gap Detection Test; Item 207; Price $113.00 USD S&H
Buy Now Button

*Administrators who are interested in measuring improvement in temporal processing abilities following remediation should purchase the RGDT-Standard & Expanded version instead.



The W-22 Form A, also known as the CID W-22, is a phonetically balanced test for word recognition (i.e. speech discrimination). They are made up of consonant-nucleus (CN), nucleus-consonant (NC) and consonant-nucleus-consonant (CNC) words. The talker has a General American dialect. The articulation function is approximately 4% /dB. The W-22 administration time is 10-18 minutes.

The W-22 Form A includes a) audio recording and b) printed word list. This product does not include instructions or normative data. It is assumed that purchasers of Auditec’s auditory tests are well trained in the use, purpose, and interpretation of basic tests. Available from Auditec, Inc.Call 1-800-669-9065 (from US) or 314-416-1050 (outside the US) to order. FREE shipping within the contiguous US.

W-22, Form A Lists 1-4; Item 103; Price $59.50 USD + S&H*
Buy Now Button

NOTE: Online ordering cannot be used for custom CDs. If you want this recording combined on a CD with other recordings, please email auditecinfo@auditec.com with your test selections along with your state or country instead of using the “Buy Now” button. You will receive a Paypal invoice for your custom order.

*INTERNATIONAL CUSTOMERS: Online ordering does not include shipping and handling charges. Please email auditecinfo@auditec.com with your test selections along with your state or country for an exact quote. If you use online ordering, you will be invoiced later for the shipping charges.

⇒Do you have speech discrimination lists in other languages? Auditec offers speech discrimination lists like the W-22 in over fifteen languages.