The Effects of Noise on Speech Intelligibility and Complex Cognitive Performance
The Effects of Noise on Speech Intelligibility and Complex Cognitive Performance

Author: Ryan Laquent Urquhart

Publisher:

Published: 2002

Total Pages: 182

ISBN-13:

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A human factors experiment was conducted to assess whether a reduction in noise at the ear would cause an improvement in speech intelligibility, an improvement in cognitive performance, and/or a reduction in subjective mental workload. Modified Rhyme Test (MRT) stimuli were used to determine intelligibility and specific tests within the Complex Cognitive Assessment Battery (CCAB) were used to assess cognitive performance. The tests chosen from the CCAB were: Tower Puzzle, Logical Relations, and Numbers and Words. These tests were chosen because of the specific set of cognitive functions that they measure which corresponded to command and control tasks. Participants performed the MRT and CCAB tests simultaneously in a 114 dBA noise environment at two speech levels, 83 dB (linear) and 96 dB (linear), using two communication microphones, Gentex Model 1453 and a prototype communication microphone developed by Adaptive Technologies Inc. (ATI). The noise used in the experiment was from a recording made inside a US Army Bradley Fighting Vehicle. Subjective mental workload was assessed using the NASA-TLX and Modified Cooper-Harper (MCH) immediately after the experiment. Results indicated that the communication microphone developed by ATI reduced the noise level at the ear better than the current Gentex microphone. However, the Gentex microphone produced significantly higher speech intelligibility scores at the 96 dB speech level.

Principles of Memory
Principles of Memory

Author: Aimée M. Surprenant

Publisher: Psychology Press

Published: 2013-03-07

Total Pages: 197

ISBN-13: 1136950648

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This monograph proposes 7 principles of human memory. These principles are qualitative statements of empirical regularities that can serve as intermediary explanations and which follow from viewing memory as a function.

Future Directions for Research on the Combined Effects of Noise and Vibration on Cognition and Communication
Future Directions for Research on the Combined Effects of Noise and Vibration on Cognition and Communication

Author:

Publisher:

Published: 2004

Total Pages: 2

ISBN-13:

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In order to gain a better understanding of how to optimize the performance of personnel operating military vehicles, where exposure to noise & vibration is a problem, it is important to consider the effects of realistic levels of noise & vibration. This paper presents an overview of previous studies of communication & cognitive performance in noise & vibration, including studies of speech intelligibility in noise and of the effects of whole body vibration, noise, and their combination on task performance. It also suggests directions for future research.

Auditory Cognition and Human Performance
Auditory Cognition and Human Performance

Author: Carryl L. Baldwin

Publisher: CRC Press

Published: 2016-04-21

Total Pages: 335

ISBN-13: 1466553545

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Hearing and understanding sound- auditory processing- greatly enriches everyday life and enhances our ability to perform many tasks essential to survival. The complex soundscape in which we live influences where we direct our attention, how we communicate with each other, and how we interact with technological systems. Auditory Cognition and Human

Speech Recognition in Adverse Conditions
Speech Recognition in Adverse Conditions

Author: Sven Mattys

Publisher: Psychology Press

Published: 2013-12-19

Total Pages: 326

ISBN-13: 1317836812

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Speech recognition in ‘adverse conditions’ has been a familiar area of research in computer science, engineering, and hearing sciences for several decades. In contrast, most psycholinguistic theories of speech recognition are built upon evidence gathered from tasks performed by healthy listeners on carefully recorded speech, in a quiet environment, and under conditions of undivided attention. Building upon the momentum initiated by the Psycholinguistic Approaches to Speech Recognition in Adverse Conditions workshop held in Bristol, UK, in 2010, the aim of this volume is to promote a multi-disciplinary, yet unified approach to the perceptual, cognitive, and neuro-physiological mechanisms underpinning the recognition of degraded speech, variable speech, speech experienced under cognitive load, and speech experienced by theoretically relevant populations. This collection opens with a review of the literature and a formal classification of adverse conditions. The research articles then highlight those adverse conditions with the greatest potential for constraining theory, showing that some speech phenomena often believed to be immutable can be affected by noise, surface variations, or attentional set in ways that will force researchers to rethink their theory. This volume is essential for those interested in speech recognition outside laboratory constraints.

The Effects of Sound on People
The Effects of Sound on People

Author: James P. Cowan

Publisher: John Wiley & Sons

Published: 2016-03-22

Total Pages: 208

ISBN-13: 1118895673

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Provides a summary of current research results on the physiological and psychological effects of sound on people Covers how the operation of the hearing mechanism affects our reactions to sounds Includes research results from studies on noise sources of public concern such as transportation, public utility, and recreational sources, with emphasis on low frequency sound and infrasound Covers sounds that affect some but not others, how sounds can be controlled on a practical level, and how and what sounds are regulated Includes coverage of both positive and negative effects of sound

Latent Variable Models
Latent Variable Models

Author: John C. Loehlin

Publisher: Psychology Press

Published: 2004-05-20

Total Pages: 303

ISBN-13: 1135614342

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This book introduces multiple-latent variable models by utilizing path diagrams to explain the underlying relationships in the models. This approach helps less mathematically inclined students grasp the underlying relationships between path analysis, factor analysis, and structural equation modeling more easily. A few sections of the book make use of elementary matrix algebra. An appendix on the topic is provided for those who need a review. The author maintains an informal style so as to increase the book's accessibility. Notes at the end of each chapter provide some of the more technical details. The book is not tied to a particular computer program, but special attention is paid to LISREL, EQS, AMOS, and Mx. New in the fourth edition of Latent Variable Models: *a data CD that features the correlation and covariance matrices used in the exercises; *new sections on missing data, non-normality, mediation, factorial invariance, and automating the construction of path diagrams; and *reorganization of chapters 3-7 to enhance the flow of the book and its flexibility for teaching. Intended for advanced students and researchers in the areas of social, educational, clinical, industrial, consumer, personality, and developmental psychology, sociology, political science, and marketing, some prior familiarity with correlation and regression is helpful.

A Handbook of Statistical Analyses using R, Third Edition
A Handbook of Statistical Analyses using R, Third Edition

Author: Torsten Hothorn

Publisher: CRC Press

Published: 2014-06-25

Total Pages: 454

ISBN-13: 1482204584

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Like the best-selling first two editions, A Handbook of Statistical Analyses using R, Third Edition provides an up-to-date guide to data analysis using the R system for statistical computing. The book explains how to conduct a range of statistical analyses, from simple inference to recursive partitioning to cluster analysis. New to the Third Edition Three new chapters on quantile regression, missing values, and Bayesian inference Extra material in the logistic regression chapter that describes a regression model for ordered categorical response variables Additional exercises More detailed explanations of R code New section in each chapter summarizing the results of the analyses Updated version of the HSAUR package (HSAUR3), which includes some slides that can be used in introductory statistics courses Whether you’re a data analyst, scientist, or student, this handbook shows you how to easily use R to effectively evaluate your data. With numerous real-world examples, it emphasizes the practical application and interpretation of results.