About
Articles by John
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5 Tools to Help Sensory and Consumer Scientists Automate Beautiful Reports
5 Tools to Help Sensory and Consumer Scientists Automate Beautiful Reports
By John Ennis
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5 Reasons Sensory and Consumer Scientists Should Learn (a Little) Data Science
5 Reasons Sensory and Consumer Scientists Should Learn (a Little) Data Science
By John Ennis
Activity
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IFT is around the corner! ⏰ Would you like to learn more about how digital transformation can be leveraged to improve food safety across the food…
IFT is around the corner! ⏰ Would you like to learn more about how digital transformation can be leveraged to improve food safety across the food…
Liked by John Ennis
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Claude Artifacts, powered by the latest AI advancements, is revolutionizing the AI landscape. This new model, developed by Anthropic, surpasses…
Claude Artifacts, powered by the latest AI advancements, is revolutionizing the AI landscape. This new model, developed by Anthropic, surpasses…
Shared by John Ennis
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Happy to announce that NeoSwap is rebranding to Tulle!
Happy to announce that NeoSwap is rebranding to Tulle!
Shared by John Ennis
Experience & Education
Publications
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A Thurstonian comparison of the Tetrad and Degree of Difference tests
Food Quality and Preference
Ennis, J. M., & Christensen, R. (2015). A Thurstonian comparison of the Tetrad and Degree of Difference tests. Food Quality and Preference, 40, 263-269.
Other authorsSee publication -
Sensory difference tests as measurement instruments: A review of recent advances
Journal of sensory studies
Ennis, J. M., Rousseau, B., & Ennis, D. M. (2014). Sensory difference tests as measurement instruments: A review of recent advances. Journal of sensory studies, 29(2), 89-102.
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Paired preference data with a no-preference option–Statistical tests for comparison with placebo data
Food Quality and Preference
Christensen, R. H. B., Ennis, J. M., Ennis, D. M., & Brockhoff, P. B. (2014). Paired preference data with a no-preference option–Statistical tests for comparison with placebo data. Food Quality and Preference, 32, 48-55.
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Precision of measurement in Tetrad testing
Food Quality and Preference
Ennis, J. M., & Christensen, R. H. (2014). Precision of measurement in Tetrad testing. Food Quality and Preference, 32, 98-106.
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Transitioning from proportion of discriminators to a more meaningful measure of sensory difference
Food Quality and Preference
Jesionka, V., Rousseau, B., & Ennis, J. M. (2014). Transitioning from proportion of discriminators to a more meaningful measure of sensory difference. Food Quality and Preference, 32, 77-82.
Other authorsSee publication -
Importance of correct instructions in the Tetrad test
Journal of Sensory Studies
Rousseau, B., & Ennis, J. M. (2013). Importance of correct instructions in the Tetrad test. Journal of Sensory Studies, 28(4), 264-269.
Other authorsSee publication -
Mapping hedonic data: A process perspective
Journal of Sensory Studies
Ennis, D. M., & Ennis, J. M. (2013). Mapping hedonic data: A process perspective. Journal of Sensory Studies, 28(4), 324-334.
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The year of the tetrad test
Journal of Sensory Studies
Ennis, J. M. (2013). The year of the tetrad test. Journal of Sensory Studies, 28(4), 257-258.
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A comparison of adaptive choice-based conjoint and choice-based conjoint to determine key choice attributes of sour cream with limited sample size
Journal of Sensory Studies
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A group level validation of the supercombinatorality property: Finding high-quality ingredient combinations using pairwise information
Food Quality and Preference
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A Large-Scale Experimental Comparison of the Tetrad and Triangle Tests in Children
Journal of Sensory Studies
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eTURF: A Competitive TURF Algorithm for Large Datasets
Food Quality and Preference
Ennis, J. M., Fayle, C. M., and Ennis, D. M. (2012). eTURF: A competitive TURF algorithm for large datasets. Food Quality and Preference, 23(1), 44-48.
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Guiding the Switch from Triangle Testing to Tetrad Testing
Journal of Sensory Studies
Ennis, J.M. (2012) Guiding the switch from triangle testing to tetrad testing. Journal of Sensory Studies. 27, 223–231.
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Confidence bounds for multiplicative comparisons
Communications in Statistics
Ennis, J.M. and Ennis, D.M. (2011). Confidence Bounds for Multiplicative Comparisons. Communications in Statistics: Theory and Methods, 40(17), 3049-3054.
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The Power of Sensory Discrimination Methods Revisited
Journal of Sensory Studies
Ennis, J. M. and Jesionka, V. (2011). The power of sensory discrimination methods revisited. Journal of Sensory Studies, 26(5), 371-382.
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Validating a Graph Theoretic Screening Approach to Food Item Combinations
Journal of Sensory Studies
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Describing the universal cover of a noncompact limit
Geometry and Topology
Ennis, J. M. and Wei, G. (2010). Describing the universal cover of a noncompact limit. Geometry & Topology, 14, 2479-2496.
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Equivalence hypothesis testing
Food Quality and Preference
Ennis, D.M. and Ennis, J.M. (2010). Equivalence hypothesis testing. Food Quality and Preference, 21, 253-256.
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Hypothesis testing for equivalence based on symmetric open intervals
Communications in Statistics
Ennis, D.M. and Ennis, J.M. (2009). Hypothesis testing for equivalence based on symmetric open intervals. Communications in Statistics - Theory and Methods, 38(11), 1792-1803.
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Confidence bounds for positive ratios of normal random variables
Communications in Statistics
Ennis, D., Ennis, J., Palen, J., Lampe, R. (2008). Confidence bounds for positive ratios of normal random variables. Communications in Statistics - Theory and Methods, 37, 307-317.
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A neurobiological theory of automaticity in perceptual categorization
Psychological Review
Ashby, F.G., Ennis, J. and Spiering, B. (2007). A neurobiological theory of automaticity in perceptual categorization. Psychological Review, 114(3), 632-656.
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Describing the universal cover of a compact limit
Differential Geometry and its Applications
Ennis, J. and Wei, G. (2006). Describing the universal cover of a compact limit. Differential Geometry and its Applications, 24(5), 554–562.
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The role of the basal ganglia in category learning
The Psychology of Learning and Motivation
Ashby, F.G. and Ennis, J. (2006). The role of the basal ganglia in category learning. The Psychology of Learning and Motivation, 46, 1-36.
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Replicated difference and preference tests: How to account for inter-trial variation.
Food Quality and Preference
Bi, J., Templeton-Janik, L., Ennis, J. M., and Ennis, D. M. (2000). Replicated difference and preference tests: How to account for inter-trial variation. Food Quality and Preference, 11, 269-273.
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Thurstonian models for variants of the method of tetrads
British Journal of Mathematical and Statistical Psychology
Ennis, J. M., Ennis, D. M., Yip, D. and O'Mahony, M. (1998). Thurstonian models for variants of the method of tetrads. British Journal of Mathematical and Statistical Psychology, 51, 205-215.
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A Thurstonian Analysis of the Two-Out-of-Five Test
Journal of Sensory Studies
Ennis, J.M. (In Press) A Thurstonian Analysis of the Two-Out-of-Five Test. Journal of Sensory Studies.
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Mapping Hedonic Data: A Process Perspective
Journal of Sensory Studies
Ennis, D.M., & Ennis, J.M. (In Press) Mapping Hedonic Data: A Process Perspective. Journal of Sensory Studies.
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Paired preference data with a no-preference option – Statistical tests for comparison with placebo data
Food Quality and Preference
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The Year of the Tetrad test
Journal of Sensory Studies
Ennis, J.M. (In Press) The Year of the Tetrad Test. Journal of Sensory Studies.
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Transitioning from proportion of discriminators to a more meaningful measure of sensory difference
Food Quality and Preference
Honors & Awards
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2013 Food Quality and Preference Awards - Researcher of the Future
Elsevier
Awarded to a researcher who received their doctoral degree 10 or fewer years prior to the year of the granting of the award for contributions to sensory or consumer science, whether in terms of basic processes, methodologies or applications of knowledge or methods.
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Outstanding Educator
UCSB
Award given to graduate students deemed outstanding as educators.
Recommendations received
5 people have recommended John
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Yesterday, we joined the Governor as he signed multiple bills into law that are important to our community. Board member Dr. Ayah Ibrahim shared her…
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