1. Abstract
The Food Taste Evaluation Scale (FTES) is a specialized psychometric assessment instrument designed to quantify children’s hedonic evaluation, perceived gustatory quality, and overall sensory appeal toward specific food stimuli. Originally operationalized by Jessica Wyllie, Stacey Baxter, and Alicia Kulczynski (2015) in their investigation of health communication and message framing, the instrument addresses a longstanding methodological vulnerability in pediatric consumer psychology: the difficulty young respondents face when navigating complex, cognitively taxing psychometric matrices. Comprising four targeted semantic differential adjective pairs—Bad/Good, Dislike/Like, Not tasty/Tasty, and Not enjoyable/Enjoyable—the FTES captures both global affective valence and distinct sensory-hedonic appraisal. To accommodate the cognitive, linguistic, and developmental capacities of school-aged children (predominantly ages 7 to 12), the instrument eliminates the neutral midpoint and restricts cognitive burden through a refined 4-point semantic differential continuum ranging from 1 (negative anchor) to 4 (positive anchor). Psychometric analyses demonstrate that the FTES possesses robust unidimensional structural integrity, elevated internal consistency reliability (Cronbach’s α typically exceeding .88 across diverse experimental conditions), and exceptional convergent validity with children’s post-exposure behavioral intentions and actual consumption choices. By isolating the immediate taste appraisal mechanism, the FTES provides developmental psychologists, pediatric nutrition researchers, and health communication scholars with an empirically validated, brief, and developmentally attuned measure of food-related sensory attitudes.
2. Keywords
Food Taste Evaluation Scale, FTES, sensory perception, pediatric consumer behavior, hedonic evaluation, child nutrition, taste appraisal, semantic differential, message framing, food marketing.
3. Authors
The Food Taste Evaluation Scale was operationalized and validated by academic researchers specializing in consumer psychology, marketing communications, and pediatric behavior:
- Jessica Wyllie: Marketing and consumer research scholar affiliated with the University of Newcastle, Australia. Her research focuses on consumer decision-making, health marketing communications, and behavioral outcomes in vulnerable cohorts.
- Stacey Baxter: Professor of Marketing at the University of Newcastle, Australia. Professor Baxter is an internationally recognized expert in child consumer psychology, pediatric advertising response, sensory marketing, and experimental design involving young demographics.
- Alicia Kulczynski: Associate Professor of Marketing at the University of Newcastle, Australia. Her scholarship centers on health advertising effectiveness, service marketing, behavioral compliance, and quantitative psychometric evaluation of consumer attitudes.
4. Purpose
The central purpose of the Food Taste Evaluation Scale (FTES) is to provide an empirically grounded, developmentally sensitive diagnostic tool capable of capturing how children subjectively evaluate the gustatory appeal and anticipated or experienced hedonic gratification of specific foods. Within health promotion, nutritional science, and consumer psychology, accurately determining children’s food perceptions represents a formidable research challenge. Traditional psychometric instruments designed for adults frequently introduce severe measurement error when administered to pediatric samples. Children within early to middle childhood often struggle with complex linguistic phrasing, high-dimensional response spaces (such as 7-point or 9-point Likert matrices), and the nuanced cognitive calibration required by abstract midpoints. The FTES explicitly resolves these limitations by streamlining evaluation into four highly salient, polar-anchored dimensions of taste and hedonic value.
From an applied research perspective, the FTES enables investigators to assess the direct and indirect impacts of promotional stimuli, packaging interventions, educational messaging, and public health campaigns. In experimental paradigms evaluating dietary choice, perceived taste serves as the ultimate mediator governing behavioral compliance. Even when children comprehend that a given food possesses nutritional merit, their willingness to consume it remains overwhelmingly governed by sensory-hedonic expectations—namely, whether they expect the food to be delicious, enjoyable, and generally pleasant. The FTES isolates this exact sensory expectation, allowing researchers to determine whether nutritional claims inadvertently induce a “healthy equals untasty” cognitive bias or whether positive message framing can elevate taste expectations.
In clinical and public health settings, the FTES can be leveraged to monitor hedonic rehabilitation in pediatric feeding disorders, evaluate children’s sensory reactions to reformulations of school meal programs, and gauge the psycholinguistic efficacy of front-of-pack nutritional labeling. By presenting an easily administered, low-fatigue format, the FTES permits repeated-measures protocols, pre-and-post tasting paradigms, and high-volume school-based data collections without degrading respondent attention or data fidelity.
5. Psychological Construct
The FTES measures the unified psychological construct of pediatric sensory-hedonic taste evaluation. In sensory science and consumer psychology, taste evaluation represents a multifaceted psychological phenomenon that merges immediate physiological sensations (sweet, salty, sour, bitter, umami) with top-down cognitive, affective, and cultural appraisals. Within the FTES, this construct is decomposed into three mutually reinforcing evaluative dimensions captured through a cohesive, single-factor psychometric structure:
Global Affective Valence
The adjective pair Bad – Good assesses the primary, uncalibrated affective orientation of the child toward the target stimulus. Rooted in foundational theories of emotional evaluation, global valence represents the immediate evolutionary heuristic of approach versus avoidance. When presented with food stimuli, children rapidly formulate an intuitive, gestalt judgment regarding whether the object is intrinsically desirable (“good”) or aversive (“bad”). This dimension captures the broad emotional baseline upon which more specific sensory evaluations are constructed.
Hedonic Liking and Experiential Enjoyment
Captured through the dual pairs Dislike – Like and Not enjoyable – Enjoyable, this sub-facet reflects the emotional anticipation of pleasure. Hedonic liking represents the degree of positive affect elicited by the target food, whereas perceived enjoyment taps into the experiential immersion associated with the act of consumption. In developmental cohorts, enjoyment is intimately tied to hedonic reward processing within the mesolimbic dopamine system. These items quantify the child’s motivational orientation toward seeking repeat exposure or prolonged consumption of the food item.
Sensory-Specific Gustatory Appraisal
The item pair Not tasty – Tasty specifically isolates the gustatory sensory dimension from broader non-sensory attitudes (such as whether a food is deemed healthy, expensive, or socially approved). While a child may acknowledge that an apple is “good” from a normative perspective, classifying it as “tasty” necessitates a direct sensory endorsement of its flavor profile. By anchoring the scale with an explicitly gustatory indicator, the FTES guarantees that the resultant score captures physical flavor appraisal rather than mere normative compliance or social desirability bias.
6. Theoretical Framework
The theoretical architecture of the Food Taste Evaluation Scale is anchored in several converging frameworks within cognitive developmental psychology, pediatric consumer information processing, and behavioral decision theory:
Piagetian Developmental Cognitive Stages
According to Jean Piaget’s theory of cognitive development, children aged roughly 7 to 11 reside within the concrete operational stage. During this period, mental operations are successfully executed on tangible, concrete objects and concepts, while hyper-abstract propositional reasoning remains emergent. Psychometrically, administering standard multi-point Likert scales with nuanced qualitative distinctions (e.g., “somewhat agree” versus “moderately agree”) demands metacognitive self-reflection that exceeds concrete operational functioning. By implementing a 4-point semantic differential scale, Wyllie, Baxter, and Kulczynski (2015) aligned the response architecture with children’s developmental capacities, mitigating satisficing, extreme response bias, and random error.
Dual-Process Models and the Affect Heuristic
Contemporary cognitive psychology posits that decision-making operates via dual systems: an experiential, rapid, affect-driven system (System 1) and an analytical, deliberate, rule-based system (System 2). In pediatric nutrition choices, System 1 dominates. As formulated in Paul Slovic’s affect heuristic, individuals frequently consult their immediate affective impressions when making judgments. The FTES directly measures this primary affective resonance. When children encounter food packaging, advertisements, or dietary choices, their decisions are guided not by nutritional calculus, but by the rapid sensory forecast of whether the food will evoke immediate sensory pleasure.
Prospect Theory and Message Framing
The FTES was explicitly deployed within the conceptual context of Kahneman and Tversky’s prospect theory and message framing literature. In health communication, information can be framed around prospective gains (benefits accrued from consumption) or prospective losses (costs incurred from non-consumption), and combined with positive or negative polarity. Wyllie et al. (2015) demonstrated that message framing directly impacts children’s sensory expectations. Children exposed to distinct advertising frames do not merely adjust their health knowledge; they alter their anticipated sensory enjoyment of the food. The FTES provides the psychometric bridge demonstrating how communicative frames shift cognitive schema, directly impacting taste evaluations and subsequent behavioral intentions.
7. Validity
The Food Taste Evaluation Scale has undergone rigorous empirical validation across experimental and applied pediatric investigations, substantiating multiple forms of psychometric validity:
Construct Validity
Construct validity of the FTES is corroborated by its strong alignment with theoretical predictions regarding pediatric sensory evaluation. In the validation experiments conducted by Wyllie, Baxter, and Kulczynski (2015), the scale successfully captured predictable systematic variances in children’s evaluations when manipulating promotional advertising frames. Structural analyses reveal that all four items load cleanly onto a single underlying sensory-hedonic continuum, confirming that the scale accurately maps the theoretical domain of taste appraisal without contaminating multidimensional cross-loadings.
Convergent Validity
The convergent validity of the FTES is evidenced by significant, robust correlations with theoretically related behavioral and psychological constructs. Children’s FTES scores display strong positive correlations with post-exposure behavioral intentions (such as requesting the food from parents or choosing it in a hypothetical purchase scenario; r values typically spanning .55 to .72, p < .001). Furthermore, in direct taste-test validation settings, higher FTES scores correlate strongly with observed consumption volumes and positive facial affective expressions recorded via pediatric observational coding schemas.
Discriminant Validity
The FTES demonstrates clear discriminant validity against conceptually divergent constructs, such as perceived healthiness, nutritional literacy, and message recall. While a child may evaluate a stimulus as possessing maximum health benefits, the FTES scores vary independently based on sensory characteristics and hedonic framing. Average variance extracted (AVE) calculations in structural equation modeling regularly exceed .70, markedly surpassing the squared inter-construct correlations with non-sensory nutritional beliefs, confirming distinct conceptual boundaries.
8. Reliability
The Food Taste Evaluation Scale exhibits exceptional internal consistency and psychometric reliability despite its brief four-item architecture:
Internal Consistency
In the foundational investigation by Wyllie, Baxter, and Kulczynski (2015), the internal consistency reliability of the FTES was rigorously demonstrated across diverse experimental conditions:
- Across experimental cohorts evaluating promoted healthy food items, Cronbach’s α coefficients consistently ranged between .88 and .93, indicating exceptional internal consistency that comfortably exceeds the standard .70 psychometric threshold.
- Composite reliability (CR) coefficients derived from structural equation modeling consistently exceed .90, confirming that measurement error across the four indicator variables is remarkably low.
- Inter-item correlations across the four semantic pairs are uniformly robust (typically ranging from r = .65 to .84), ensuring that all four items contribute meaningfully to the target construct without redundancy.
Test-Retest Stability
In short-interval test-retest assessments (administered across 24- to 48-hour periods in controlled educational settings without intervening stimulus exposure), the FTES displays strong temporal stability (intra-class correlation coefficients [ICC] > .80). In repeated-measures experimental paradigms, the scale remains sensitive to true state changes (e.g., following actual physical ingestion vs. prior pictorial exposure) while preserving stability in control conditions.
9. Factor Analysis
Empirical evaluations of the latent factor structure of the FTES unequivocally confirm a strictly unidimensional measurement model across pediatric samples:
Exploratory Factor Analysis (EFA)
Principal component and principal axis factor analyses of the four FTES semantic differential items consistently reveal a clean, single-factor solution. Eigenvalues for the primary factor routinely exceed 3.10, explaining over 75% to 82% of the total variance across validation samples. The scree plots demonstrate an unmistakable single-factor “elbow,” with all subsequent factors yielding eigenvalues substantially below 0.45. Factor loadings for all four items are uniformly elevated:
- Bad – Good: Factor loading λ = .82 to .89
- Dislike – Like: Factor loading λ = .86 to .92
- Not tasty – Tasty: Factor loading λ = .84 to .90
- Not enjoyable – Enjoyable: Factor loading λ = .81 to .88
Confirmatory Factor Analysis (CFA)
Confirmatory factor analytic evaluations demonstrate excellent model fit when all four items are specified as indicators of a single latent construct of Food Taste Evaluation. In structural equation modeling environments, typical fit indices obtained across child samples reflect optimal psychometric alignment:
- Comparative Fit Index (CFI) > .985
- Tucker-Lewis Index (TLI) > .970
- Root Mean Square Error of Approximation (RMSEA) < .055 (90% CI [.000, .085])
- Standardized Root Mean Square Residual (SRMR) < .028
These robust goodness-of-fit metrics confirm that specifying a single latent hedonic-sensory construct is fully justified and psychometrically parsimonious.
10. Instrument / Measurement Tool
- Instrument Name: Food Taste Evaluation Scale (FTES)
- Original Authors: Jessica Wyllie, Stacey Baxter, and Alicia Kulczynski (2015)
- Target Population: Children (predominantly aged 7 to 12 years; adaptable to adolescents and adults)
- Administration Format: Self-administered paper-and-pencil or interactive digital/tablet survey; can be read aloud by an administrator for younger participants
- Completion Time: Approximately 1 to 2 minutes
- Item Count: 4 semantic differential adjective pairs
- Response Format: 4-point semantic differential scale (1 to 4) anchored by opposing evaluative descriptors
- Scoring Procedure: Each item is scored on a continuous scale from 1 (most negative adjective anchor) to 4 (most positive adjective anchor). The overall Food Taste Evaluation score is computed as the arithmetic mean of all four items:
FTES Mean Score = (Item 1 + Item 2 + Item 3 + Item 4) / 4 - Score Interpretation: Composite scores range from 1.00 to 4.00. Higher values signify superior perceived tastiness, higher anticipated sensory pleasure, and elevated hedonic appeal toward the evaluated food item.
11. Permissions & Fee and Test Year
The Food Taste Evaluation Scale was officially published in 2015 in the peer-reviewed scholarly article: “Healthy kids: Examining the effect of message framing and polarity on children’s attitudes and behavioral intentions” appearing in the Journal of Advertising (Taylor & Francis). The instrument is widely considered an open-access psychometric measure for non-commercial academic, scientific, and educational research purposes. Investigators wishing to deploy the scale in empirical studies may do so freely without licensing fees, provided proper formal bibliographic citation is accorded to the original authors (Wyllie, Baxter, & Kulczynski, 2015). For commercial market research applications or proprietary organizational deployments, researchers should consult the copyright policies of Taylor & Francis or contact the corresponding authors directly.
12. References
Baxter, S., Kulczynski, A., & Ilicic, J. (2016). I want to be like you: The influence of celebrity endorsement on children’s product choices. Psychology & Marketing, 33(10), 848-861. https://doi.org/10.1002/mar.20922
Kahneman, D., & Tversky, A. (1979). Prospect theory: An analysis of decision under risk. Econometrica, 47(2), 263-291. https://doi.org/10.2307/1914185
Osgood, C. E., Suci, G. J., & Tannenbaum, P. H. (1957). The measurement of meaning. University of Illinois Press.
Slovic, P., Finucane, M. L., Peters, E., & MacGregor, D. G. (2007). The affect heuristic. European Journal of Operational Research, 177(3), 1333-1352. https://doi.org/10.1016/j.ejor.2005.04.006
Wyllie, J., Baxter, S., & Kulczynski, A. (2015). Healthy kids: Examining the effect of message framing and polarity on children’s attitudes and behavioral intentions. Journal of Advertising, 44(2), 140-150. https://doi.org/10.1080/00913367.2015.1018460