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ABSTRACT INFORMATION
Title: 'Development and verification of a two-interval, forced-choice infant behavioral testing procedure' Track: 2 - Audiological Services Keyword(s): Learning Objectives: Abstract: Current behavioral methods used to test infants in the clinic and in the laboratory can be influenced by response bias of the listener and/or the examiner. Visual Reinforcement Audiometry provides some control for examiner bias in the clinic when control trials are used, but does not account for listener bias. A single-interval, observer-based procedure controls for examiner bias in the laboratory (Olsho et al., 1987), but listener bias remains a potential issue. Infant-adult differences in listener bias limit age group comparisons for adaptive-threshold estimates. The purpose of this study was to develop and validate a two-interval forced-choice (2IFC) infant psychophysical test procedure. Infants (7- 9 months) and young adults were tested to determine the number of trials required to achieve a criterion of 80%-correct detection of a 50-dB SPL noise band presented in quiet. All 16 subjects (8 infants, 8 adults) reached criterion in a single testing session, with infants requiring an average of 12.5 trials (range = 8-14 trials). Fewer trials were needed to reach the criterion than reported in previous studies using a single-interval procedure. These results suggest that using a 2IFC procedure is feasible and efficient while also controlling for both examiner and listener response bias. Presentation: This presentation has not yet been uploaded or the speaker has opted not to make the presentation available online. Handouts: Handout is not Available
PRESENTER(S) / AUTHOR(S) INFORMATION
Jenna Browning - POC,Author The University of North Carolina at Chapel Hill Division of Speech and Hearing Sciences      Credentials: B.S.      Other Affiliations: The University of North Carolina at Chapel Hill Division of Speech and Hearing Sciences       Jenna Browning is a 2nd year doctoral student in Audiology at the University of North Carolina at Chapel Hill. She received her Bachelor of Science Degree in Speech and Hearing Sciences at the University of Washington. Her primary focus is pediatric audiology, specifically auditory development and speech perception in noise.       ASHA DISCLOSURE: Financial - No relevant financial relationship exist. Nonfinancial - No relevant nonfinancial relationship exist. Lori Leibold - Author The University of North Carolina at Chapel Hill Division of Speech and Hearing Sciences      Credentials: Ph.D.       Lori Leibold is an Associate Professor in the Division of Speech and Hearing Sciences at The University of North Carolina at Chapel Hill. She received her Ph.D. at the University of Washington in Seattle and completed a postdoctoral fellowship at Boys Town National Research Hospital in Omaha.       ASHA DISCLOSURE: Financial - Nonfinancial - Emily Buss - Author The University of North Carolina at Chapel Hill Department of Otolaryngology/Head and Neck Surgery      Credentials: Ph.D.       Emily Buss is a professor in the Department of Otolaryngology/ Head and Neck Surgery at The University of North Carolina at Chapel Hill. She received her Ph.D. at the University of Pennsylvania and completed a postdoctoral fellowship at The University of North Carolina at Chapel Hill.       ASHA DISCLOSURE: Financial - Nonfinancial -