Tag Archives: Temporal Methods

The analysis of temporal check-all-that-apply (TCATA) data

Temporal check-all-that-apply (TCATA) extends classical check-all-that-apply (CATA) by adding a temporal dimension to the evaluation. From a data analysis point of view, TCATA data are similar to Temporal Dominance of Sensations (TDS) data but differ in that more than one attribute can be selected at any time point. Procedures for analyzing TCATA data can hence be generalized from methods for CATA as well as for TDS.

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What is dominance? An exploration of the concept in TDS tests with trained assessors and consumers

TDS describes the evolution of the dominant sensory attributes during consumption. Dominance can be assessed as the sensation that captures the attention, the most striking, or the new sensation that pops up, but not necessarily the most intense. This wide definition implies that individual assessors within a panel might assess dominance differently, and even the same assessor could be using different strategies for determining the dominant attribute the same product evaluation. Continue reading What is dominance? An exploration of the concept in TDS tests with trained assessors and consumers

Dynamics of consumer perception

Methods for Consumer Research, Volume One: New Approaches to Classic Methods brings together world leading experts in global consumer research who provide a fully comprehensive state-of-the-art coverage of advances in the classical methods of consumer science. The book touches on the latest developments in qualitative techniques, including coverage of both focus groups and social media, while also focusing on liking, a fundamental principle of consumer science, consumer segmentation, and the influence of extrinsic product characteristics, such as packaging and presentation on consumer liking.

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Temporal methods add to innovation

Conventional sensory methods often characterize products as if they are a static aggregation of attribute intensities. But it has long been recognized that many products have an important temporal component, and examples of this are seemingly limitless; consider that foods are chewed and broken down prior to swallowing with accompanying texture changes and flavour release, that carbonated beverages elicit numbing and prickling sensations in the mouth which attenuate with time, and that the skinfeel of many personal care products changes during application. More recently, methods such as temporal check-all-that-apply (TCATA) have been used to allow both trained assessors and consumers to describe samples continuously. This means that it is possible to investigate consumer hedonic clusters based on consumer liking data, and then to explore the temporal perceptions elicited within consumers clusters that are of interest. Continue reading Temporal methods add to innovation

Perception dynamics of grain-based ready-to-eat cereal products using TCATA

The breakdown of grain-based ready-to-eat cereals in the mouth occurs relatively quickly, but it is at this stage when the consumer experiences directly the sensory properties of the cereal. The feelings, tastes, flavors, and sounds elicited in mouth are not static. Rather, these sensations are perceived dynamically, and evolve within each bite, and over the multi-bite eating experience. Temporal check-all-that-apply (TCATA), which has recently been introduced as a temporal sensory method, extends the use of check-all-that-apply questions by allowing continuous selection of attributes based on applicability or noticeability. TCATA can permit characterization of the perception dynamics of real-world products. Continue reading Perception dynamics of grain-based ready-to-eat cereal products using TCATA

Evaluation of consumer perception dynamics 2.0

Over the last decade, so-called rapid methods for sensory evaluation have been developed to permit consumers to characterize products. The possibility to analyze both sensory perception data and hedonic and other data arising from the same consumers presents new opportunities, but also new challenges to investigate hedonic drivers and other interesting aspects. Continue reading Evaluation of consumer perception dynamics 2.0

Temporal Check-All-That-Apply (TCATA): A novel dynamic method for characterizing products

Temporal Check-All-That-Apply (TCATA) is introduced as a new dynamic method for describing multidimensional sensory properties of products as they evolve over time. TCATA extends the Check-All-That-Apply (CATA) method. Selection and deselection of attributes are tracked continuously over time, permitting assessors to characterize the evolution of sensory changes in products. TCATA is presented using results from trained panel evaluations of yogurt products. Continue reading Temporal Check-All-That-Apply (TCATA): A novel dynamic method for characterizing products

Comparison of TCATA and TDS for dynamic sensory characterization of food products

Temporal Check-All-That-Apply (TCATA) has been recently introduced as a method for temporal sensory product characterization. Building on the standard Check-All-That-Apply (CATA) question format, assessors select all the terms they consider applicable for describing the sensations they perceive, and they do so at each moment of the evaluation process. Continue reading Comparison of TCATA and TDS for dynamic sensory characterization of food products