Time Compressed Sentence Test^©

The Time Compressed Sentence Test^{©  copyright 2002}, was designed to determine the individual’s ability to process a speech signal that is presented at rapid rates.  There is reason to believe that time compressed sentence material is a better stimulus than time compressed words because sentences more nearly approximate ongoing speech. 

The Time Compressed Sentence Test recording consists of a 1000 Hz calibration tone, a practice list of ten sentences presented at normal rates of speech (0% time compression), two lists of ten sentences with 40% time compression and two lists of ten sentences with 60% time compression.  All time compressed test sentences are preceded by two practices sentences.  The sentences are recorded with 5 second intervals to allow subjects time to respond.  The test takes approximately 15 minutes to administer, including instructions, practice and scoring.  In scoring, three points are given for each sentence repeated correctly, and one point deducted for each section of the sentence (subject, object, or predicate) misinterpreted or not heard.   Test results are interpreted using tables that provide (a) cut-off scores for -1.5 and -2 SD of performance, (b) z-scores, and (c) percentile ranks.  Examiners can also determine standard scores for direct comparison with other standardized tests such as intelligence tests and language measures such as the Clinical Evaluation of Language Function.   Normative data was collected on 160 children in age groups from 6 years to 11 years 11 months.  The test manual provides background information on test administration and interpretation.

Results of Time Compressed Sentence Test can help identify individuals who have difficulty following conversation presented at rapid rates.  Some of these persons will have disorders of auditory timing in which the individual is unable to perceive rapid changes in formant frequencies of ongoing speech.  When these problems are identified remediation programs to enable the individual to compensate for their problem can be recommended. The test is an appropriate follow up for individuals who have difficulty on the Auditory Fusion Test – revised, Random Gap Detection Test or a central auditory test battery.  

Standardization of the TCST  was published in the Journal of Educational Audiology, Volume 10 (2002). 

The Time Compressed Sentence Test was completed during the summer of 2002 and is available from Auditec of St. Louis.   At the present time we are in the process of standardizing a version of the TCST recorded in Spanish.  That test should be available in the spring of 2003.

To purchase this product contact www.auditec.com/ or call 1-800-669-9065