a b s t r a c tTemporal 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. Data are also used to illustrate approaches for exploratory data analysis. Raw data from each assessor are represented using indicator charts. Panel data are aggregated into TCATA product plots. Reference lines are added to provide additional guidance. Product pairwise comparisons are made in TCATA difference plots, emphasizing differences that are less likely to have arisen from chance. Correspondence analysis (CA) is used to visualize product trajectories over time in a sensory space, providing a summary multivariate understanding of the dynamic sensory properties. CA conducted on the TCATA yogurt data highlight the importance of the dynamic profile, and suggest that understanding the complexity of products requires investigation of temporal changes. Results indicate that the TCATA method has potential for evaluating temporal aspects of sensory perception but further research is required to identify methodological issues and to refine the methodology.

Results from the present work suggest that warnings have potential as directive FOP nutrition labels to improve consumer ability to identify unhealthful products and highlight advantages compared with the traffic-light system.

Food labels play a key role in attracting consumers' attention and providing information that could largely influence their purchase decisions. The aim of the present work was to evaluate how consumers acquire information from food labels using eye-tracking measures. Fifty-three consumers completed two tasks in which they evaluated perceived healthfulness of the products and willingness to purchase by looking at three unknown labels of three different products (mayonnaise, pan bread and yogurt).Participants' eye movements were recorded using an eye tracker while evaluating the labels. Results showed that in order to evaluate their willingness to purchase and perceived healthfulness of unknown food labels, consumers directed their attention to selected areas, searching for specific information such as brand, ingredients, nutritional information and the image on the label, regardless of type of product and label design. PRACTICAL APPLICATIONSAttention measures based on memory have been reported to be poor indicators of what consumers actually attend to, mainly due to the fact that attention is not necessarily active and conscious. Eye-tracking measures could be a useful way of studying consumers' processing of visual stimuli such as food labels. Results from the present study suggested that attention toward unfamiliar food labels was mainly determined by top-down factors. Consumers mainly scanned the labels, searching for specific information related to brand, composition and nutritional information. bs_bs_banner Journal of Sensory Studies ISSN 0887-8250 138 Journal of Sensory Studies 28 (2013) 138-153

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