Sensory Evaluation Practices

ISBN-10: 0123820863
ISBN-13: 9780123820860
Edition: 4th 2012
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Description: Understanding what the consumer wants and will accept are two of the most significant hurdles faced by anyone in new product development. Whether the concern is the proper mouth-feel of a potato chip, the sense of "freshness" evoked by a chewing  More...

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Book details

List price: $99.95
Edition: 4th
Copyright year: 2012
Publisher: Elsevier Science & Technology Books
Publication date: 8/2/2012
Binding: Hardcover
Pages: 446
Size: 7.75" wide x 9.25" long x 1.00" tall
Weight: 2.640
Language: English

Understanding what the consumer wants and will accept are two of the most significant hurdles faced by anyone in new product development. Whether the concern is the proper mouth-feel of a potato chip, the sense of "freshness" evoked by a chewing gum, or the weight and texture of a cosmetic, if the consumer doesn't find the product acceptable, it won't sell. Sensory evaluation testing is the process that establishes the consumer acceptability of a product. It can help identify issues before general production is begun, and potentially bring to light issues that hadn't previously been considered a factor in the success of the project.Methods of sensory evaluation have progressed significantly since the first edition of this book, and with each edition since. Recent improved understanding of key components such as the importance of the difference between experts and consumers and the selection of subjects, the analysis of various measurement scales, hybrid methods, and proper preparation of an evaluation panel make this fourth edition timely and important for those working in product development including sensory professionals, technical managers, product specialists and research directors.*Appeals to sensory experts both in academia and business*Discovered new optimization is based on integration of sensory descriptive and consumer research data*New sensory information with imagery

Foreword
Preface
Introduction to Sensory Evaluation
Introduction and objective
Historical background
Development of sensory evaluation
Defining sensory evaluation
A physiological and psychological perspective
The Organization and Operation of a Sensory Evaluation Program
Introduction
Organizing a sensory evaluation program
Goals and objectives
Program strategy
Professional staff
Facilities
Test methods
Selection of subjects
Subject screening procedures
Performance monitoring and motivation
Requests and reports
Operations manual
Planning and research
Strategic use of research vendors
Conclusions
Measurement
Introduction
Components of measurement: scales
Nominal scales
Ordinal scales
Interval scales
Ratio scales
Selected measurement techniques
Hedonic scale
Face scales
Labeled affective magnitude scale
Just-about-right scale
Other scales of interest
Conclusion
Test Strategy and the Design of Experiments
Introduction
Test request and objective
Product criteria
Psychological errors
Error of central tendency
Time-order error
Error of expectation
Error of habituation and of anticipation
Stimulus error
Logical error and leniency error
Halo effect
Proximity error
Contrast and convergence errors
Statistical considerations
Reliability and validity
Replication
Independence and dependence of judgments
Random selection of subjects
Risk in the decision-making process: Type 1 and Type 2 errors
Statistical measures
Experimental design considerations
Selected product designs
Discrimination Testing
Introduction
Methods
Paired-comparison test
Duo-trio test
Triangle test
Other test methods
Components of testing
Organization and test management
Test requests
Test objectives
Test procedures
Data analysis and interpretation
The just-noticeable difference
Special problems
Is there preference after difference?
Magnitude of degree of difference
Equivalency and similarity testing
Description of difference
Summary
Descriptive Analysis
Introduction
Test methods
Flavor profile
Texture profile
Quantitative descriptive analysis (the QDA method)
Spectrum descriptive analysis
Free-choice profiling
Other methods
Experts and expert panels
Applications for descriptive analysis
Conclusions
Affective Testing
Introduction
Methods
Paired comparison
Hedonic scale
Other methods
Subjects
Types of acceptance testing
Laboratory testing
Central location testing
Special types of central location tests
In-home-use tests
Other types of acceptance tests
Special issues
Sensory science versus marketing research/consumer insights
The difference-preference test
The curse of N
The scorecard as a short story
The many ways to ask the preference question
What question do I ask first?
Conclusions
Strategic Applications
Introduction
Front end of innovation
Product development
Product optimization
Sensory, physical, and chemical relationships
Stability testing
Quality control
Market audits
Extended-use testing
Sensory and legal claims for advertising
Conclusion
Epilogue
Introduction
Educating the sensory professional
The future
References
Index

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