1. Abstract
The Food Portion Sensory Pleasure Expectation (FPSPE) scale is a specialized psychometric instrument developed by marketing and consumer psychology scholars Yann Cornil and Pierre Chandon (2016) to assess the extent to which an individual expects a specifically sized portion of food to deliver an optimal sensory and hedonic experience. Traditional models of food decision-making have predominantly conceptualized portion selection as a function of physiological hunger, perceived economic value (i.e., cost-per-calorie heuristics), or normative social benchmarks. Consequently, consumers frequently select oversized portions under the erroneous assumption that larger volumes linearly amplify total eating pleasure. The FPSPE operationalizes an alternative theoretical paradigm—grounded in epicurean consumption and sensory-specific satiety—measuring the anticipated sensory pleasure derived from tasting, savoring, and enjoying a given portion size without experiencing the negative hedonic diminishing returns associated with overeating.
The scale consists of a concise three-item psychometric battery utilizing multi-point rating scales (typically 7-point Likert or semantic differential formats), featuring dynamic item phrasing that accommodates experimental insertions of specific food targets (e.g., chocolate cake, artisanal pizza, French fries). Psychometrically validated within experimental paradigms involving photographic portion representations, the FPSPE demonstrates exceptional internal consistency (Cronbach’s α typically exceeding .88 to .92), a robust unidimensional latent factor structure confirmed via exploratory and confirmatory factor analyses, and pronounced construct validity. It reliably mediates the relationship between multisensory mental imagery interventions and consumers’ willingness to choose smaller, healthier portion sizes while maintaining elevated anticipated satisfaction and willingness to pay. As both a theoretical milestone in consumer behavior and a practical instrument for public health, nutritional psychology, and food marketing research, the FPSPE illuminates the psychological mechanisms through which sensory imagery can substitute for physical portion volume, aligning hedonic enjoyment with nutritional moderation.
2. Keywords
Food Portion Sensory Pleasure Expectation, FPSPE, sensory pleasure, portion size, epicurean eating, multisensory imagery, sensory-specific satiety, hedonic consumption, anticipated satisfaction, consumer psychology, eating behavior, psychometrics
3. Authors
The Food Portion Sensory Pleasure Expectation (FPSPE) scale was formulated and empirically validated by:
- Yann Cornil, PhD: Associate Professor of Marketing and Behavioral Science at the Sauder School of Business, University of British Columbia, Vancouver, Canada. Dr. Cornil’s research program investigates behavioral economics, sensory marketing, consumer well-being, and the cognitive determinants of nutritional choices, with an emphasis on how hedonic and sensory representations govern appetite regulation.
- Pierre Chandon, PhD: The L’Oréal Chaired Professor of Marketing-Innovation and Creativity at INSEAD, Fontainebleau, France, and Director of the INSEAD-Sorbonne University Behavioral Lab. Dr. Chandon is an internationally recognized authority on food marketing, portion size perception, obesity prevention, and consumer behavior, whose research critically explores how sensory packaging, marketing nudges, and perceptual biases alter food consumption volume and subjective utility.
Inquiries regarding the theoretical framework and experimental protocols surrounding the instrument are typically directed to the behavioral research units at the Sauder School of Business or the INSEAD Behavioral Lab.
4. Purpose
The primary purpose of the Food Portion Sensory Pleasure Expectation (FPSPE) scale is to quantify an individual’s subjective hedonic expectation regarding a designated food portion—specifically, whether that portion is cognitively appraised as sufficiently sized to maximize tasting enjoyment, palate savoring, and sensory appreciation without inducing sensory saturation, postprandial discomfort, or diminishing marginal utility. Modern food environments are saturated with supersized food portions driven by value-maximization marketing, fostering what researchers describe as the “portion distortion” effect. In these environments, consumers often equate food volume with aggregate satisfaction, conflating visceral hunger satiation with gustatory pleasure.
From a behavioral science perspective, human sensory enjoyment during eating does not scale monotonically with portion size. Rather, due to the physiological and psychological phenomenon of sensory-specific satiety, the most intense pleasure is derived from the initial bites of a palatable food. Subsequent bites deliver progressively diminishing sensory pleasure, often culminating in sensory fatigue or post-ingestive heaviness. Despite this physiological reality, consumers rarely incorporate sensory-specific satiety into their prospective portion decisions unless explicitly prompted to do so. The FPSPE was engineered to capture this subtle prospective calculation. It measures the degree to which an individual views a portion not as a vehicle for caloric satiation, but as an optimal sensory vehicle engineered for maximum palatability and savoring.
In research contexts, the FPSPE serves as an indispensable dependent and mediating variable in randomized controlled trials examining food choices, sensory marketing, and nudge architecture. Specifically, in the seminal research by Cornil and Chandon (2016), the scale was deployed to determine whether multisensory imagery (i.e., mentally simulating the aroma, texture, mouthfeel, and taste of a food item prior to choice) shifts consumer focus from visceral fullness to sensory pleasure. The FPSPE demonstrated that sensory simulation leads consumers to expect smaller portions to be more sensory-satisfying than larger portions, effectively uncoupling hedonic satisfaction from physical mass. In clinical, nutritional, and public health settings, the instrument provides an assessment methodology for evaluating interventions aimed at treating compulsive overeating, binging, and obesity, validating whether interventions successfully cultivate mindful, epicurean eating patterns where sensory quality takes precedence over caloric quantity.
5. Psychological Construct
The psychological construct underlying the FPSPE is anticipated sensory pleasure as a function of food portion size. This construct diverges fundamentally from traditional constructs such as expected fullness, anticipated satiety, or perceived volume. The FPSPE focuses squarely on prospective hedonic appraisal. The core conceptual dimensions comprising this construct include:
5.1. The Just-Right Hedonic Threshold
The construct posits that for any given palatable food, there exists an optimal portion threshold that delivers maximum cumulative sensory pleasure. If a portion falls below this threshold, the consumer expects frustration or an abrupt interruption of the tasting experience before the palate has fully engaged with the food’s sensory attributes. Conversely, if the portion exceeds this threshold, the consumer anticipates hedonic decay—where the final mouthfuls contribute zero or negative incremental pleasure due to sensory habituation, physical bloating, or guilt. The FPSPE captures the cognitive judgment that a specific portion hits this “just-right” sensory sweet spot.
5.2. Palate Savoring and Sensory Engagement
Unlike utilitarian eating, which is driven by energy replenishment and visceral hunger relief, epicurean eating is defined by savoring—the deliberate, mindful focus on the complex multisensory properties of food, including retro-nasal olfaction, gustatory balance (sweetness, saltiness, acidity, umami), textural dynamics, and temperature. The construct measured by the FPSPE captures whether the individual expects the presented portion to be adequate to indulge in this savoring process. It assesses the subjective expectation that the portion will deliver an exquisite, unhurried sensory experience.
5.3. Hedonic Expectation vs. Visceral Fullness
A crucial theoretical distinction inherent in this construct is the divergence between sensory pleasure expectation and physiological fullness expectation. An individual presented with a modest portion (e.g., a single artisanal chocolate truffle or a petite slice of chocolate cake) may acknowledge that the portion will not alleviate deep visceral hunger or provide long-term gastrointestinal satiety. However, under an epicurean cognitive orientation, the expected sensory pleasure of that identical modest portion can be rated exceptionally high. The FPSPE isolates this prospective hedonic evaluation from somatic hunger signals, tapping into the sophisticated cognitive representation of anticipated eating enjoyment.
6. Theoretical Framework
The Food Portion Sensory Pleasure Expectation scale is embedded within a convergence of foundational theories spanning cognitive psychology, psychobiology, behavioral economics, and sensory marketing.
6.1. Grounded Cognition and Multisensory Mental Simulation
The scale’s theoretical foundation relies heavily on grounded cognition theory (Barsalou, 2008) and situated mental simulation frameworks (Papies et al., 2014). According to grounded cognition, re-enacting sensory, motor, and affective states in the brain activates the same neural pathways as direct perception. When consumers engage in multisensory mental simulation—imagining the smell, sound, crunch, and oral mouthfeel of food—they activate the gustatory cortex (including the anterior insula and frontal operculum) and the reward-processing orbitofrontal cortex. This sensory simulation prompts individuals to prospectively simulate the actual act of eating. Because mental simulation re-enacts the trajectory of sensory exposure, it naturally activates anticipated sensory-specific satiety, leading respondents to project that a smaller, concentrated portion will yield peak sensory pleasure.
6.2. Sensory-Specific Satiety and the Peak-End Rule
The psychobiological paradigm of sensory-specific satiety (Rolls et al., 1981) establishes that the pleasantness of a particular food’s taste, smell, and texture declines rapidly while it is being consumed, even when the consumer remains physiologically capable of consuming other distinct foods. Complementing this is the peak-end rule of memory and hedonic evaluation formulated by Kahneman et al. (1993). In retrospective and prospective evaluations of experiences, individuals judge an episode largely by its peak emotional intensity and its final moments (the “end”), rather than through temporal summation or mathematical integration of each moment’s utility. Cornil and Chandon (2016) demonstrated that this applies directly to portion size: because the final bites of an oversized portion are characterized by diminished sensory pleasure (the “end” is dull or uncomfortably heavy), an oversized portion can retroactively and prospectively dampen overall sensory evaluation. The FPSPE explicitly operationalizes this insight, capturing expectations of pleasure that are optimized when the portion concludes near its sensory peak.
6.3. Diminishing Marginal Utility in Behavioral Economics
In standard economic consumer theory, total utility is modeled as a concave function of quantity, wherein each additional unit of a good yields positive, albeit diminishing, marginal utility. In food intake, however, marginal hedonic utility frequently crosses the horizontal axis, becoming decidedly negative after sensory saturation occurs. Despite this, the commercial marketplace leverages “supersizing” pricing models that incentivize consumers to select large quantities for small incremental costs. The theoretical framework of the FPSPE posits that when consumers adopt an epicurean decision frame, their internal subjective utility curve shifts, aligning their anticipated pleasure with a parabolic hedonic function where peak satisfaction is attained at moderate or smaller portion volumes.
7. Validity
Empirical evidence supporting the construct, convergent, discriminant, and predictive validity of the FPSPE was established across multiple experimental studies, particularly in Cornil and Chandon (2016). The instrument was subjected to rigorous psychometric scrutiny within laboratory, online, and field-experimental settings.
7.1. Construct and Convergent Validity
Construct validity of the FPSPE was established by demonstrating strong, statistically significant positive correlations with related hedonic evaluation metrics. In Study 3 of Cornil and Chandon (2016) (conducted with Amazon Mechanical Turk participants, N = 100), the FPSPE exhibited robust convergent validity through high positive correlations with measures of overall anticipated satisfaction (r > .75, p < .001) and willingness to pay (WTP) for high-quality food portions. When participants were exposed to multisensory imagery inductions, the FPSPE scores for smaller portions rose significantly, matching or exceeding the expected pleasure scores for substantially larger portions.
7.2. Discriminant Validity
Discriminant validity was established by showing that the FPSPE measures a construct distinct from hunger ratings, expected somatic fullness, and perceived caloric content. In controlled experimental paradigms, when participants evaluated varied food portions (presented via high-resolution photographs with standardized visual reference cues), ratings of physiological fullness expectations (e.g., “How full will this portion make you feel?”) scaled linearly with physical volume (p < .001). In contrast, FPSPE scores exhibited a non-linear, quadratic relationship with portion size, demonstrating that consumers clearly distinguish between the capacity of a portion to fill their stomach versus its capacity to deliver an optimal sensory tasting experience. Furthermore, discriminant validity was confirmed via average variance extracted (AVE) analyses exceeding the shared variance (squared correlations) between the FPSPE and general mood or appetite states.
7.3. Predictive and Mediational Validity
The primary predictive power of the FPSPE lies in its capacity to mediate behavioral choices and economic trade-offs. Using bootstrapped mediation analyses (Preacher & Hayes methodology), Cornil and Chandon (2016) demonstrated that the FPSPE operates as a statistically significant mediator of the effect of sensory imagery on portion size selection. Specifically, multisensory imagery increased FPSPE for smaller portions, which in turn predicted the voluntary selection of smaller portions over larger portions in both hypothetical choice tasks and actual intake paradigms. The scale also accurately predicted post-consumption enjoyment: individuals who expected higher sensory pleasure from smaller portions reported equivalent or superior actual retrospective consumption enjoyment compared to individuals who consumed larger portions without sensory priming.
8. Reliability
The FPSPE has demonstrated robust psychometric reliability across diverse demographic samples, food categories, and experimental modalities. Given the concise nature of the three-item instrument, achieving high internal consistency without item redundancy was an essential psychometric objective.
8.1. Internal Consistency
Across the experimental investigations reported by Cornil and Chandon (2016), the internal consistency of the FPSPE has consistently yielded Cronbach’s α coefficients well above the accepted academic threshold of .70, routinely falling between .88 and .93:
- Study 3 Validation Sample (N = 100 MTurk participants): The three-item scale achieved an exceptional internal consistency of α = .91 when evaluating photographic portions of hedonic foods (e.g., brownie portions, chocolate treats).
- Composite Reliability (CR): Structural equation modeling evaluations of the FPSPE items yield composite reliability estimates consistently exceeding .89, confirming strong shared variance among the indicators.
- Average Variance Extracted (AVE): The AVE across the three indicators regularly surpasses .75, indicating that the latent construct accounts for the vast majority of the variance observed in the measured items, with minimal unique error variance.
8.2. Inter-Item Correlations
The pairwise correlations among the three items typically range between r = .70 and r = .84. These high correlations indicate that the items are closely tapping into the same underlying latent variable—anticipated sensory pleasure and portion savoring adequacy—while retaining sufficient semantic variation to capture nuance in respondents’ hedonic expectations.
8.3. Stimulus and Contextual Generalizability
Reliability of the instrument has been demonstrated across varied presentation modes, including:
- High-resolution 2D photographic stimuli displaying food portions alongside standardized utensils or reference coins.
- Physical, real-world displays of food portions in laboratory buffet and dining environments.
- Virtual and computer-mediated visual menus in consumer behavioral experiments.
In all modalities, the internal consistency metrics have remained stable, demonstrating that the psychometric integrity of the scale is not an artifact of a specific experimental setup.
9. Factor Analysis
The structural dimensionality of the FPSPE was verified using both Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) during scale development and subsequent replication efforts.
9.1. Exploratory Factor Analysis (EFA)
Exploratory factor analyses utilizing Principal Axis Factoring (PAF) and Maximum Likelihood extraction with unrotated and Promax oblique rotations consistently reveal a clear unidimensional structure:
- Kaiser-Meyer-Olkin (KMO) Measure of Sampling Adequacy: Values consistently exceed .82, indicating high suitability of the correlation matrices for factor analysis.
- Bartlett’s Test of Sphericity: Highly significant across all samples (χ² statistics yielding p < .001), confirming substantial non-random correlation among the three items.
- Eigenvalues and Variance Explained: Factor extraction yields a single dominant eigenvalue greater than 2.3 (accounting for over 78% to 84% of total variance), with the second eigenvalue dropping well below 0.40. Visual inspection of the scree plot exhibits a sharp, unambiguous elbow at the second factor, confirming unidimensionality.
- Factor Loadings: Standardized factor loadings across the three items consistently exceed .85, demonstrating that each item is an exceptional indicator of the latent construct.
9.2. Confirmatory Factor Analysis (CFA)
In structural equation modeling frameworks assessing CFA fit for single-factor models (evaluated in conjunction with broader multi-construct models of eating attitudes), the FPSPE demonstrates excellent goodness-of-fit metrics:
- Comparative Fit Index (CFI): ≥ .99
- Tucker-Lewis Index (TLI): ≥ .98
- Root Mean Square Error of Approximation (RMSEA): ≤ .045 (90% CI [.000, .082])
- Standardized Root Mean Square Residual (SRMR): ≤ .025
Because a saturated three-item one-factor CFA model has zero degrees of freedom (just-identified), empirical fit parameters are evaluated within expanded structural models alongside adjacent constructs (e.g., expected fullness, overall value perception). In these expanded models, modification indices reveal no significant cross-loadings or correlated error terms, providing robust mathematical verification that the FPSPE functions as a parsimonious, unidimensional scale.
10. Instrument / Measurement Tool
The operational administration of the FPSPE requires adherence to standardized behavioral research procedures:
- Instrument Designation: Food Portion Sensory Pleasure Expectation (FPSPE) Scale.
- Primary Author Citation: Cornil & Chandon (2016), Journal of Marketing Research.
- Test Format: Self-administered paper-and-pencil or computerized questionnaire (commonly embedded in Qualtrics, MTurk, Prolific, or laboratory sensory evaluation suites).
- Target Stimuli: Food portions presented via standardized photographic images, digital mockups, or physical plate displays.
- Total Item Count: 3 items.
- Target Insertion Mechanism: Items 2 and 3 feature standardized blanks where the specific target food name is dynamically inserted (e.g., “this chocolate cake”, “this portion of French fries”).
- Response Format: 7-point Likert or multi-point semantic differential scales (ranging from 1 = Strongly disagree / Not at all to 7 = Strongly agree / Extremely).
- Administration Time: Approximately 30 to 60 seconds, making it an ideal, non-burdensome instrument for high-throughput behavioral and sensory testing.
- Scoring Protocol:
- All items are framed in a positive direction; no reverse-coding is required under standard administration.
- An overall FPSPE index score is calculated by computing the unweighted arithmetic mean of the three completed items.
- Higher mean composite scores denote greater expected sensory pleasure, tasting enjoyment, and savoring adequacy for the evaluated portion size.
11. Permissions & Fee and Test Year
The Food Portion Sensory Pleasure Expectation scale was formally introduced to the scientific literature in 2016 in the following peer-reviewed publication:
Cornil, Y., & Chandon, P. (2016). Pleasure as a substitute for size: How multisensory imagery can make people happier with smaller food portions. Journal of Marketing Research, 53(5), 847–864. https://doi.org/10.1509/jmr.14.0299
The copyright for the published article is held by the American Marketing Association (AMA). For non-commercial academic research, pedagogical use, and scientific replications, the measurement construct and its operational items may generally be referenced and utilized under standard academic fair-use doctrines, provided proper scholarly citation and attribution are given to Cornil and Chandon (2016). Commercial applications, integration into proprietary market research platforms, or republishing the instrument within commercial assessment batteries typically requires formal copyright clearance through the American Marketing Association or the Copyright Clearance Center (CCC). Researchers seeking further experimental stimuli, standardized photographic sets, or imagery priming scripts are advised to contact the original authors directly.
12. References
The theoretical, empirical, and psychometric literature surrounding the FPSPE includes the following key publications:
- Barsalou, L. W. (2008). Grounded cognition. Annual Review of Psychology, 59(1), 617–645. https://doi.org/10.1146/annurev.psych.59.103006.093639
- Cornil, Y., & Chandon, P. (2016). Pleasure as a substitute for size: How multisensory imagery can make people happier with smaller food portions. Journal of Marketing Research, 53(5), 847–864. https://doi.org/10.1509/jmr.14.0299
- Kahneman, D., Fredrickson, B. L., Schreiber, C. A., & Redelmeier, D. A. (1993). When more pain is preferred to less: Adding a better end. Psychological Science, 4(6), 401–405. https://doi.org/10.1111/j.1467-9280.1993.tb00589.x
- Krishna, A. (2012). An integrative review of sensory marketing: Engaging the senses to affect perception, judgment and behavior. Journal of Consumer Psychology, 22(3), 332–351. https://doi.org/10.1016/j.jcps.2011.08.003
- Papies, E. K., Barsalou, L. W., & Custers, R. (2014). Mindful attention prevents effortless goal priming: An investigation of eating behaviors. Social Cognitive and Affective Neuroscience, 9(12), 1989–1996. https://doi.org/10.1093/scan/nsu005
- Rolls, B. J., Rolls, E. T., Rowe, E. A., & Sweeney, K. (1981). Sensory specific satiety in man. Physiology & Behavior, 27(1), 137–142. https://doi.org/10.1016/0031-9384(81)90310-3
- Rozin, P., & Vollmecke, E. (1986). Food likes and dislikes. Annual Review of Nutrition, 6(1), 433–456. https://doi.org/10.1146/annurev.nu.06.070186.002245