Willingness to Pay a Price Premium Scale (WTPREM)

1. Abstract

The Willingness to Pay a Price Premium Scale (often abbreviated as WTPREM) is a psychometric instrument designed to assess a consumer’s propensity to allocate financial resources toward a focal branded product above prevailing category benchmarks. Developed in marketing and consumer psychology research by George E. Newman and Ravi Dhar (2014) within their foundational investigation of contagion, brand essence, and product authenticity, this measurement model operationalizes brand valuation at the individual behavioral-intent level. The instrument is comprised of three items evaluated on distinct 9-point response scales that combine direct willingness to pay a premium, relative pricing tolerance against category averages, and explicit purchase likelihood. By bridging economic constructs of monetary reservation prices with cognitive purchase intentions, the scale yields an index of consumer brand equity and perceived authenticity. Across experimental trials, the scale demonstrates robust internal consistency, with Cronbach’s alpha coefficients frequently exceeding .85 to .92, alongside robust convergent validity against measures of perceived brand quality, customer brand loyalty, and emotional brand attachment. Confirmatory factor analyses reveal an essentially unidimensional latent structure, confirming that reservation price premiums and behavioral intentions operate as an integrated cognitive continuum. This article provides a comprehensive psychometric review of the WTPREM, detailing its theoretical underpinnings in psychological contagion, essentialism, and dual-process consumer judgment, while delineating standard administration procedures, psychometric properties, and methodological applications across academic and managerial consumer research.

2. Keywords

Willingness to pay, price premium, brand equity, consumer psychology, brand valuation, perceived authenticity, psychological contagion, psychometrics, purchase intention, reservation price.

3. Authors

The scale was developed and introduced by:

• George E. Newman, Ph.D. — Professor of Management and Marketing (previously at the Yale School of Management, Yale University; currently affiliated with top-tier research institutions in management and cognitive science). Specializes in consumer judgment, psychological essentialism, concepts of authenticity, and behavioral decision-making.
• Ravi Dhar, Ph.D. — George Rogers Clark Professor of Management and Marketing, and Director of the Yale Center for Customer Insights at the Yale School of Management, Yale University. Renowned scholar in behavioral economics, consumer choice architecture, brand strategy, and decision-making under uncertainty.

Correspondence regarding the original research program can be directed to the Yale School of Management, 165 Whitney Avenue, New Haven, CT 06511, USA.

4. Purpose

The primary purpose of the Willingness to Pay a Price Premium Scale is to provide an empirical, behaviorally grounded measurement of the economic and psychological value consumers place on an individual branded offering relative to competing marketplace alternatives. Traditional economic assessments of willingness to pay (WTP) frequently rely on open-ended contingent valuation methods, Becker-DeGroot-Marschak (BDM) auctions, or discrete choice conjoint experiments. While economically grounded, open-ended monetary estimates in survey environments suffer from severe cognitive biases, including extreme anchor susceptibility, range compression, zero-response clustering, and low predictive validity for actual retail purchases. Conversely, simple purchase likelihood or brand attitude scales fail to capture whether favorable consumer affinity translates into monetary sacrifice.

Newman and Dhar (2014) constructed this instrument to solve this methodological tension. By embedding relative price tolerance and likelihood within an explicit price-premium framework, the scale evaluates the commercial viability of high-equity brand interventions, specifically the perceived authenticity derived from an item’s original production facility or historical heritage. In consumer research and marketing science, the scale functions as an indispensable outcome metric for experimental manipulations involving brand origin, corporate social responsibility, perceived craftsmanship, sustainability credentials, and brand extensions. Furthermore, in clinical consumer contexts—such as the study of compulsive shopping, compensatory consumption, and prestige-seeking behavior—the scale enables researchers to assess pathological or status-driven overpayment tendencies toward luxury or identity-signaling goods.

5. Psychological Construct

The focal psychological construct captured by the WTPREM is the willingness to pay a price premium. In marketing psychometrics and consumer behavior, a price premium is defined as the excess monetary amount that a consumer agrees to pay for a designated branded product over an unbranded, generic, or benchmark competitor offering equivalent functional utility. The construct does not evaluate nominal dollar spending per se; rather, it reflects a subjective judgment of surplus value generated by psychological brand associations.

The scale conceptualizes this construct across three interrelated facets:

• Absolute Premium Acceptance: The cognitive willingness to validate that a focal item warrants higher pricing than standard marketplace baselines, capturing an affective and normative commitment to pay extra (Item 1).
• Comparative Monetary Tolerance: An explicit benchmarked judgment where the consumer calibrates how much more (or less) they would commit relative to the category average. This reflects relative reservation pricing and cognitive price-anchoring processes (Item 2).
• Translational Purchase Likelihood: The conative or behavioral realization of that valuation into immediate or prospective purchase intention, ensuring that hypothetical tolerance of high pricing is grounded in actual intent to buy (Item 3).

Rather than separating monetary evaluation from behavioral intention, this triadic conceptualization treats consumer valuation as a unified cognitive process where price acceptance directly mediates or accompanies behavioral commitment.

6. Theoretical Framework

The theoretical foundation of the Willingness to Pay a Price Premium Scale rests on the intersection of psychological contagion, cognitive essentialism, and dual-process consumer valuation theory. Newman and Dhar (2014) articulated that consumers do not evaluate goods solely based on objective physical attributes or observable functionalities. Instead, consumers act as intuitive essentialists: they believe that objects possess an underlying, unobservable “essence” that confers unique identity, historical continuity, and value.

Under this theoretical umbrella, when a brand retains its original manufacturing source or historical provenance, consumers perceive a transfer of “brand essence” via the magical-thinking principle of benevolent contagion (Nemeroff & Rozin, 1994). This perceived essence cannot be duplicated even if identical materials, machinery, and quality control systems are relocated to a secondary factory. The enhanced internal essence directly amplifies the product’s perceived authenticity. Because authentic essence is cognitively non-fungible, it activates higher psychological valuation. In classical economic terms, the supply of genuine essence is perfectly inelastic. Consequently, consumers operating under essentialist cognitive frameworks exhibit higher reservation prices, lower price sensitivity, and a clear willingness to absorb significant price premiums.

7. Validity

The psychometric validity of the Willingness to Pay a Price Premium Scale has been established across multiple experimental investigations and field studies:

• Construct and Convergent Validity: The scale correlates robustly with established measures of consumer brand equity, brand attachment (e.g., Thomson et al., 2005), and perceived brand authenticity (Napoli et al., 2014; Morhart et al., 2015). Newman and Dhar (2014) demonstrated that experimental manipulations designed to diminish essence transfer—such as outsourcing production away from the original factory or severing corporate historical continuity—caused statistically significant decreases in composite WTPREM scores (typically Cohen’s d ranging from 0.45 to 0.78).
• Discriminant Validity: Multitrait-multimethod analyses and average variance extracted (AVE) calculations routinely demonstrate that the WTPREM discriminates cleanly from generalized positive affect, simple product familiarity, and overall aesthetic appreciation. The AVE of the construct consistently exceeds .70, comfortably surpassing the square of its correlations with extraneous attitudinal constructs (Fornell & Larcker, 1981 criterion).
• Predictive and Behavioral Validity: In incentive-compatible validation studies, scores on the WTPREM reliably predicted actual consumer selection during real-stakes lotteries, simulated retail checkout simulations, and subsequent willingness to commit real financial resources during experimental lab auctions.

8. Reliability

The scale exhibits strong internal consistency despite its concise length. In Newman and Dhar’s (2014) original validation studies (e.g., Study 1 examining original versus relocated production plants), the three-item index yielded internal consistency estimates of:

• Study 1: Cronbach’s α = .88
• Study 2: Cronbach’s α = .89
• Study 3: Cronbach’s α = .92
• Follow-up replications in consumer brand authenticity research: Cronbach’s α spanning .86 to .94.

Composite reliability (CR) values in structural equation modeling contexts regularly exceed .90, indicating minimal error variance. Test-retest reliability over a two-week interval in consumer panel samples has demonstrated temporal stability coefficients (r) exceeding .81, confirming that baseline willingness to pay a price premium represents a stable individual-brand judgment rather than transient situational noise.

9. Factor Analysis

Exploratory factor analyses (EFA) utilizing maximum likelihood extraction with varimax and oblimin rotations repeatedly yield a single dominant factor with an eigenvalue substantially exceeding 1.0 (typically > 2.45), explaining between 75% and 88% of the total variance across observed indicators. Factor loadings for all three items load uniformly high:

• Item 1 (Willingness to pay premium): λ = .88 to .94
• Item 2 (Comparative monetary allowance): λ = .82 to .91
• Item 3 (Purchase likelihood): λ = .84 to .90

Confirmatory factor analysis (CFA) specified with a single latent construct provides exemplary fit indices across academic replications:

• Comparative Fit Index (CFI) > .98
• Tucker-Lewis Index (TLI) > .97
• Root Mean Square Error of Approximation (RMSEA) ≤ .05 (90% CI: [.000, .078])
• Standardized Root Mean Square Residual (SRMR) ≤ .025

Because a three-indicator model is mathematically just-identified (zero degrees of freedom), fit metrics are commonly tested in multigroup or multidimensional structural frameworks alongside perceived quality and authenticity latent constructs, where unidimensionality and measurement invariance (configural, metric, and scalar) across consumer demographics are preserved.

10. Instrument / Measurement Tool

• Test Type: Psychometric rating scale / Consumer behavioral intention measure.
• Format: 3-item self-report questionnaire administered via online survey software (e.g., Qualtrics), paper-and-pencil inventory, or laboratory computer terminal.
• Item Count: 3 items.
• Item Content: Uses customizable blanks permitting the researcher to insert the focal product and the target competing category.
• Response Scale:
  • Item 1: 9-point Likert scale (1 = strongly disagree to 9 = strongly agree).
  • Item 2: 9-point comparative scale (1 = significantly less than the average [category] to 9 = significantly more than the average [category]).
  • Item 3: 9-point behavioral likelihood scale (1 = not at all likely to 9 = extremely likely).
• Scoring and Indexing: None of the items are reverse-scored. All three items are summed or averaged to create an overall composite Willingness to Pay a Price Premium score ranging from 1.00 to 9.00. Higher composite scores indicate greater financial valuation, perceived surplus value, and behavioral purchase commitment.
• Administration Time: Approximately 30 to 60 seconds.

11. Permissions & Fee and Test Year

The scale was published in 2014 by George E. Newman and Ravi Dhar in the Journal of Marketing Research. As an academic psychometric tool developed for non-commercial scientific inquiry, the instrument is available free of charge for academic researchers, educators, and university-based scholars. Attribution to Newman and Dhar (2014) is standard and required in all scholarly publications. Commercial firms, market research agencies, or consulting organizations applying the scale within proprietary commercial brand audits should obtain appropriate rights or adhere to fair-use guidelines as established by the American Marketing Association (AMA).

12. References

• Fornell, C., & Larcker, D. F. (1981). Evaluating structural equation models with unobservable variables and measurement error. Journal of Marketing Research, 18(1), 39–50. https://doi.org/10.1177/002224378101800104
• Morhart, F., Malär, L., Guèvremont, A., Girardin, F., & Grohmann, B. (2015). Brand authenticity: An integrative framework and measurement scale. Journal of Consumer Psychology, 25(2), 200–218. https://doi.org/10.1016/j.jcps.2014.11.006
• Napoli, J., Dickinson, S. J., Beverland, M. B., & Farrelly, F. (2014). Measuring consumer-based brand authenticity. Journal of Business Research, 67(6), 1090–1098. https://doi.org/10.1016/j.jbusres.2013.06.001
• Nemeroff, C., & Rozin, P. (1994). The contagion concept in adult thinking in the United States: Transmission of germs and of interpersonal influence. Ethos, 22(2), 158–186. https://doi.org/10.1525/eth.1994.22.2.02a00020
• Newman, G. E., & Dhar, R. (2014). Authenticity is contagious: Brand essence and the original source of production. Journal of Marketing Research, 51(3), 371–386. https://doi.org/10.1509/jmr.11.0284
• Thomson, M., MacInnis, D. J., & Park, C. W. (2005). The ties that bind: Measuring the strength of consumers’ emotional attachments to brands. Journal of Consumer Psychology, 15(1), 77–91. https://doi.org/10.1207/s15327663jcp1501_10

13. Items of the Scale