Technical Reports

All of the topics covered in our technical reports are treated in greater depth in our short courses. Our book, Tools and Applications of Sensory and Consumer Science, organizes and compiles our most significant and useful technical reports in one easy-to-use book. Readers will benefit from introductions written by Dr. Daniel M. Ennis, an index, and several tables for product testing methods. This resource is a must-have tool for professionals in claims support, consumer research, and product testing. Click here to learn more.” Please feel free to contact us with any questions.

2018
Derived Preference from Applicability Scoring
- Daniel M. Ennis and Benoît Rousseau
Consumer Relevant Confidence in Sensory Difference Tests
- John M. Ennis and Daniel M. Ennis
Consumer-Centric Product Mapping: LSA vs. EPM
- Benoît Rousseau and Daniel M. Ennis

2017
Replicated Preference Testing to Diagnose Consumer Segmentation
- Daniel M. Ennis
Large TURF Problems: Finding Custom Solutions
- John M. Ennis and William J. Russ
Claiming Superiority and Equivalence Simultaneously
- Daniel M. Ennis
Preference without a Difference
- Benoît Rousseau and Daniel M. Ennis

2016
Selecting Products for a Category Appraisal with Constraints
- Benoît Rousseau, Daniel M. Ennis, and John M. Ennis
A Process Perspective to Understand Hedonics
- Daniel M. Ennis
eTURF 2.0: From Astronomical Numbers of Portfolios to a Single Optimum
- John M. Ennis and William J. Russ
Issues in "Up-To" Advertising Claims
- Daniel M. Ennis

2015
Predicting Preference From Liking
- Benoît Rousseau and Daniel M. Ennis
Comparing Perceptual Noise in Rating Scales
- Daniel M. Ennis
Count-Based Comparison Claims
- Daniel M. Ennis and John M. Ennis
Identifying and Removing Sources of Bias in Product Tests and Surveys
- Daniel M. Ennis and Benoît Rousseau

2014
Answering Questions in Surveys
- Catherine Sears and Daniel M. Ennis
Unfolding
- Daniel M. Ennis
Confidence Intervals and Consumer Relevance
- Daniel M. Ennis, Benoît Rousseau, and John M. Ennis
Rotations in Product Tests and Surveys
- Daniel M. Ennis, Benoît Rousseau, and John M. Ennis

2013
How to Find Optimal Combinations of Brand Components
- Daniel M. Ennis and John M. Ennis
How to Diagnose the Need for 3D Unfolding
- Benoît Rousseau
Transitioning from Proportion of Discriminators to Thurstonian Delta
- Benoît Rousseau, Daniel M. Ennis, and John M. Ennis
When Are Two Products Close Enough to be Equivalent?
- Benoît Rousseau, and Daniel M. Ennis

2012
Proper Task Instructions and the Two-out-of-Five Test
- John M. Ennis, Benoît Rousseau, and Daniel M. Ennis
Efficient Representation of Pairwise Sensory Information
- John M. Ennis and Daniel M. Ennis
Deciphering the Language of Emotions to Develop an Emotion Lexicon
- Benoît Rousseau, John M. Ennis, and Daniel M. Ennis
Reducing Costs with Tetrad Testing
- John M. Ennis and Benoît Rousseau

2011
Interpreting Applicability Scores
- Daniel M. Ennis and John M. Ennis
Illuminating Product by Demographic Interactions
- Benoît Rousseau and Daniel M. Ennis
From Many to Few: A Graph Theoretic Screening Tool for Product Developers
- John M. Ennis, Charles M. Fayle, and Daniel M. Ennis
How to Set Identicality Norms for No Preference Data
- Daniel M. Ennis and John M. Ennis

2010
Action Standards in a Successful Sensory Discrimination Program
-  Benoît Rousseau
How to Account for "No Difference / Preference" Counts
-  Daniel M. Ennis and John M. Ennis
Portfolio Optimization Based on First Choice
-  John M. Ennis and Charles Fayle
Optimum Product Selection for a Drivers of Liking Project
- John M. Ennis, Daniel M. Ennis and Charles Fayle

2009
Unfolding  Liking using Landscape Segmentation Analysis® and Internal Preference Mapping
- Benoît Rousseau
Scaling First-Last, MaxDiff and Best-Worst Data
- Daniel M. Ennis
Multiplicative versus Ratio Comparisons
- John M. Ennis and Daniel M. Ennis
Brand Effects on the Landscape of Consumer Experience
- Michael B. Casale and Daniel M. Ennis

2008
New Developments in Equivalence Testing
- Daniel M. Ennis and John M. Ennis
An Application of Landscape Segmentation Analysis to Blind and Branded Data
- Benoît Rousseau and Daniel M. Ennis
Conditional Ratio Statements
- John M. Ennis and Daniel M. Ennis
Improving the Cost and Speed of Product Innovation
- Benoît Rousseau and Daniel M. Ennis

2007
Category Learning and Feedback in Panel Training
- Michael B. Casale and Daniel M. Ennis
Why Proportion of Discriminators is Method-Specific
- Benoît Rousseau and Daniel M. Ennis
Do Consumers have multiple ideals depending on usage occasions?
- Daniel M. Ennis
Discovering Time-Dependent Trends
- Richard E. Lampe and Daniel M. Ennis

2006
Parity Claims
- Daniel M. Ennis
Indices of Sensory Difference: R-Index and d'
- Benoît Rousseau
Making Ratio Statements About Product Improvements
- Daniel M. Ennis
Identifying Emerging Opportunities in Consumer Markets
- Luke Anderson and Daniel M. Ennis

2005
Alternative Methods for Understanding Preference
- Richard E. Lampe
Relative Scales and Difference Testing Norms
- Daniel M. Ennis
Analytic Approaches to Accounting for Individual Ideal Points
- Daniel M. Ennis
Measuring Product Performance / Image Tradeoffs
- Daniel M. Ennis

2004
From Ranks to Intensities
- Daniel M. Ennis
Product Concept Fits
- Benoît Rousseau and Daniel M. Ennis
Relating Expert and Consumer Sensitivities
- Benoît Rousseau
Competitive Strategies in Product Portfolio Design
- Daniel M. Ennis

2003
Just-About-Right Scales
- Daniel M. Ennis
Designing New Product Portfolios
- Daniel M. Ennis
Identifying Latent Segments
- Daniel M. Ennis and James Luke Anderson

2002
Motivations for Product Consumption
- Daniel M. Ennis and Benoît Rousseau
Multivariate Difference Testing with Multiple Samples
- Benoît Rousseau and Daniel M. Ennis
Discrimination Testing with Multiple Samples
- Benoît Rousseau and Daniel M. Ennis

2001
Probabilistic Multidimensional Scaling
- Daniel M. Ennis
How Retasting Can Improve the Power of Product Testing
- Benoît Rousseau and Daniel M. Ennis
Drivers of Liking® for Multiple Segments
- Daniel M. Ennis

2000
Population Thresholds
- Daniel M. Ennis
Multivariate Sensory Quality Control
- Daniel Ennis and Jian Bi

1999
Models for the A-Not A Method
- Jian Bi and Daniel M. Ennis
Thurstonian Models for Intensity Ratings
- Daniel M. Ennis
Multivariate Preference Mapping
- Daniel M. Ennis
Molecular Mixture Models: Accounting for Synergy in Sweet Taste Mixtures
- Daniel M. Ennis

1998
Models for Replicated Ratings
- Jian Bi and Daniel M. Ennis
Thurstonian Scaling for Difference Tests
- Daniel M. Ennis
Replicated Difference and Preference Testing with Applications to Claims Support
- Jian Bi and Daniel M. Ennis
Drivers of Liking®
- Daniel M. Ennis and Jian Bi

1995
Maximizing Potential Market Share Based on Product and/or Concept Choices
- Daniel M. Ennis and Kenneth Mullen