An Evaluation of Two Pulse-Type Tests Oe Hearing
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AN EVALUATION OF TWO PULSE-TYPE TESTS OE HEARING Dissertation Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University By THOMAS BROWN ANDERSON, B.S., M. S. The Ohio State University 1952 Approved by: TABLE OE CONTENTS CHAPTER I. INTRODUCTION .... ............. 1 The Problem...................... 7 The Hypotheses ................. 8 Explanation of Terms . ........ 12 II. REVIEW OE LITERATURE ............. 14 III. PROCEDURES........................ 26 Apparatus........................ 26 Stimuli................... .. 28 Subjects ........................ 29 Presentation ................... 30 Scoring of Tests ............... 33 IV. RESULTS AND DISCUSSION........... 34 Part I .......................... 34 Part II ........................ 96 V. CONCLUSIONS ...................... 99 BIBLIOGRAPHY............................ 104 APPENDIX A ............................... 108 APPENDIX B ............................... 110 APPENDIX C............................... 111 APPENDIX D . ............................ 112 APPENDIX E ............................... 113 APPENDIX E ............................... 114 AUTOBIOGRAPHY .......................... 115 ii E09365 LIST OE TABLES TABLE PAGE I. Order of Tests for Each. Group of 10 Subjects . 27 II. Analyses Made and Statistical Methods Used . 36 III. Summary of Tests of Independence and Correla tion of Pure-Tone Scores and Speech- Reception Scores ...................... 38 IV. Summary of Eight Analyses of Variance: Measures of Listeners Scores for the Pure-Tone Test and the Multiple-Tone Pulse-Type Test (monaural).............. 43 V. Mean Scores in Decibels for the Pure-Tone Tests for Six Levels of Scores for the Multiple-Tone Pulse-Type Test............ 44 VI. Mean Threshold Values (Relative db) of Pure Tones Associated With Ears That are Categorized 5”0 on the Multiple-Tone Test. 47 VII. Summary of an .Analysis of Variance: Measures of Scores for the Speech-Reception Test and the Multiple-Tone Pulse-Type Test. • 52 VIII. Mean Scores for the Speech-Reception Tests in Three Levels of the Multiple-Tone Pulse-Type Test....................... 53 IX. Results of Bi-Serial Correlations for Measurements of Binaural Speech-Reception Scores and the Multiple-Tone Pulse-Type Test Under Two Laboratory Conditions . 55 iii LIST OF TABLES (Cont’d.) TABLE PAGE X. Mean Scores of the Multiple-Tone Pulse-Type Test and Retest in Two Categories of Scores for the Speech-Reception T e s t ........ 56 XI. Summary of an Analysis of Variance: Measures of Listeners Scores of the Multiple-Tone Pulse-Type Test and the Speech-Reception Test. 58 XII. Contingency Tables for the Chi-Square Test of Independence of the Multiple-Tone Pulse- Type Test Under Two Conditions . .......... 61 XIII. Contingency Tables for the Tetrachoric Correlations of the Multiple-Tone Pulse- Type Test Under Two Conditions.............. 63 XIV. Contingency Tables for the Chi-Square Test of Independence of the Multiple-Tone Pulse- Type Test Under Controlled Conditions and the Original Multiple-Tone Pulse-Type Test With Zero Scores Removed * ................. 66 XV. Summary of Eight Analyses of Variance: Measures of Listeners Scores for the Sihgle- Tone Pulse-Type Test and the Pure-Tone Test. 70 XVI. Summary of Eight Analyses of Variance: Measures of Listeners Scores of the White- Noise Pulse-Type Test and the Pure-Tone Test • 71 XVH. Mean Score Values for the Pure-Tone Test in Seven Levels of Scores for the Single-Tone Pulse-Type and the White-Noise Pulse-Type Test (monaural). .................. 72 iv LIST OF TABLES (Cont'd.) TABLE PAGE XVIII. Summary of Four Analyses of Variance: Measures of Listeners Scores of the Single- Tone Pulse-Type Test (binaural) and the Pure-Tone Test Scores for the Better Ear . 79 XIX. Summary of Four Analyses of Variance: Measures of Listeners Scores for the White- Noise Pulse-Type Test (binaural) and the Pure-Tone Test Scores for the Better Ear • • 82 XX. Mean Scores of Seven Levels of Scores for the Single-Tone and White-Noise Pulse-Type Test (binaural) and Pure-Tone Test Scores for the Better E a r ................... 86 XXI. Contingency Tables for the Chi-Square Test of Independence of Speech-Reception Scores and the Single-Tone Pulse-Type and White- Noise Pulse-Type Test (binaural)... 91 XXII. Contingency Tables for the Chi-Square Test of Independence of Speech-Reception Scores and the Single-Tone Pulse-Type and White- Noise Pulse-Type Test (binaural-retest)... 95 XXIII. Mean Scores of the Multiple-Tone Pulse-Type Test for Both Ears in Six Levels of Noise. 98 v LIST OF FIGURES FIGURE PAGE 1. A Graphioal Representation of the Relationship Between the Mean Scores of the Pure-Tone Test and Scores Yielded by the Multiple-Tone Pulse- Type Test .... ................ 48 2. A Graphical Representation of the Relationship Between the Mean Scores of the Pure-Tone Test and Scores Yielded by the Multiple-Tone Pulse- Type T e s t ......................... ........... 49 3. A Graphical Representation of the Relationship Between the Mean Scores of the Pure-Tone Test and the Combined Scores for Both Ears Yielded by the Multiple-Tone Pulse-Type Test........ 50 4* A Graphical Representation of the Relationship Between the Mean Scores of the Pure-Tone Test and the Combined Scores for Both Ears with One Score Computed as Weighted Means for Four Scores Yielded by the Multiple-Tone ( Pulse-Type T e s t .............................. 51 5. A Graphical Representation of the Relationship Between the Mean Scores of the Speech-Recep tion Test and Three Classifications of Scores as Yielded by the Multiple-Tone Pulse-Type T e s t . ........................................ 54 6 . A Graphical Representation of the Relationship Between the Mean Scores of the Speech-Recep tion Test and Three Classifications of Scores for the Better.Ear as Yielded by the Multiple- Tone Pulse-Type Test. ................... 59 7. A Graphical Representation of the Relationship Between the Mean Scores of the Pure-Tone Test for the Left Ear and Scores for the Left Ear as Yielded by the Single-Tone Pulse-Type Test. 73 S'. A Graphical Representation of the Relationship » Between the Mean Scores of the Pure-Tone Test for the Right Ear and Scores for the Right Ear as Yielded by the Single-Tone Pulse-Type Test........................................... 74 vi LIST OF FIGURES (Cont’d.) FIGURE PAGE 9. A Graphical Representation of the Relationship Between the Mean Scores of the Pure-Tone Test for the Right Ear and Scores for the.Right Ear as Yielded by the White-Noise Pulse-Type Test. 75 10. A Graphical Representation of the Relationship Between the Mean Scores of the Pure-Tone Test for the Left Ear and Scores for the Right,Ear as "Yielded by the White-Noise Pulse-Type Test. 76 11. A Graphical Representation of the Total Number of Correct Responses on Repeated Tests of the Single-Tone Pulse-Type and White-Noise Pulse- Type T e s t s ............ 81 12. A Graphical Representation of the Relationship Between the Mean Scores of the Pure-Tone Test for the Better Ear and Scores as yielded by the Single-Tone. Pulse-Type Test (binaural) . 83 13. A Graphical Representation of the Relationship Between the Mean Scores of the Pure-Tone Test for the Better Ear and Scores as Yielded by the White-Noise Pulse-Type Test (binaural) ........ 84 14. Obtained per cent Right Scores on Multiple-Tone Pulse-Type Test for the Left Ear in Six Levels of White Noise; also Line of Best Fit. Left Ear. §7 15. Obtained per cent Right Scores on Multiple-Tone Pulse-Type Test for the Right Ear in Six Levels of White Noise; also Line of Best Fit. Right Ear. 08 vii AN EVALUATION OE TWO PULSE-TYPE TESTS OE HEARING CHAPTER I INTRODUCTION Many clinical tests have been used in assessing hearing ability. Some are relatively new; others are of long standing. Some older tests as the conversational- voice test, the whisper test, the watch-tiek test, and the 1 coin-click test continue to be used. "Slallowell Davis, Hearing and Deafness, (New York: Murray Hill Book, Inc., 1947, P« 126. The Voice Test Goldstein, writing in 1924, stated that voices vary so greatly in pitch, in intensity, and character that it is impossible to formulate an absolute standard for testing and therefore approximate standards must suffice in the administration and interpretation of both conversational 2 voice and whisper. Various clinical tests with voice have 2 Max A. Goldstein, "Functional Tests of Hearing," Oralism and Auralism, 3:2, 1924. been made. Kopetsky describes a voice and whisper test 3 that is used today. The normal distance for this test 3 S. J. Kopetsky, Deafness, Tinnitus, and Vertigo, (New York: Thomas Nelson and Sons, 1948), pp. 164-171. 1 2 for the conversational voice is 20 feet and for the whispered voice is 15 feet. He notes the obvious sources of error in this method and concludes that for measurements of hearing losses in the "speech range" of sound frequencies, the voice and whisper tests have little scientific value. However, he states that since the ability to hear normal speech is the prime interest of the deafened patient, speech tests should be used with better methods of control. The Watch Test The watch test is still used occasionally. Goldstein claimed that this test has an advantage over the older voice test in that the watch tick does not vary from time to time in intensity or pitch of its tick and can therefore be better standardized than the voice.^ Again the test depends upon 4 Goldstein, 0£. cit., p. 5. testing conditions and type of watch if the test is to be standardized. Fletcher shows the inaccuracy of this test in that the watch and coin click tests are mostly in the high frequency region, around 2 ,0 0 0 c.p.s. (cycles per second) and hence more reflection patterns are produced in 5 a room than for the low frequencies. 5 Harvey Fletcher, Speech and Hearing. (New York, D. Van Nostrand Co., Inc., 1929, p.