Simultaneous and staggered dichotic word and digit tests with stutterers and nonstutterers |
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| Institution: | 1. Research School of Finance, Actuarial Studies and Statistics, Australian National University, Australia;2. School of Operations Research and Information Engineering, Cornell University, United States;1. Institut d''Astrophysique de Paris (UMR7095: CNRS & UPMC - Sorbonne Universities), F-75014, Paris, France;2. Physics Department and INFN, Università di Roma “La Sapienza”, Ple Aldo Moro 2, 00185, Rome, Italy;3. Dipartimento di Fisica e Science della Terra, Università di Ferrara and INFN, sezione di Ferrara, Polo Scientifico e Tecnologico - Edficio C Via Saragat, 1, I-44122 Ferrara Italy;4. IFIC, Universidad de Valencia-CSIC, 46071, Valencia, Spain;5. AIM-Paris-Saclay, CEA/DSM/IRFU, CNRS, Univ. Paris VII, F-91191 Gif-sur-Yvette, France;6. Department of Physics and Astronomy, The Johns Hopkins University Homewood Campus, Baltimore, MD 21218, USA;7. BIPAC, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK |
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| Abstract: | The present study compared the performance of stuttering adults and matched controls on the Staggered Spondaic Word (SSW) test and three experimental digit tests—Two Pair Digit—TPD, Staggered Digits Simultaneous—SDS, and Staggered Digits Offset—SDO. Results indicated differences between stuttering and nonstuttering group mean values on the left ear scores of the TPD test, and on the numbers of reversals on both the SDS and SDO tests. The SSW, SDS, and SDO tests were all found to produce similar results in both stutteres and nonstutterers. However, the numbers of reversals on the SDS and SDO tests were significantly greater than those observed on the SSW test for both groups. Finally, the TPD test was found to be significantly more difficult for both groups than either of the other two experimental tests (i.e., SDS and SDO). These results are discussed in terms of similarity and differences with other dichotic listening studies. Limitations of the study and implications for further research are also presented. |
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