Product Love Embeddedness Scale

1. Abstract

The Product Love Embeddedness Scale (PLES) is an empirically validated, three-item self-report psychometric instrument designed to measure the extent to which consumers perceive a commercial or artisan artifact to be symbolically infused with the maker’s genuine affective investment, care, and love. Developed by Christoph Fuchs, Martin Schreier, and Stijn M. J. van Osselaer (2015) in their seminal work on the ‘handmade effect’ published in the Journal of Marketing, the instrument operationalizes the ‘love account’—the psychological belief that manual, handcrafted production modes allow an artisan to uniquely imbue an object with positive personal emotion in a manner that industrial, automated processes cannot replicate. The scale operates on a unidimensional continuum, measuring consumer attributions of affective infusion using a 7-point Likert scale ranging from 1 (Strongly disagree) to 7 (Strongly agree). Across numerous laboratory experiments, field studies, and replication investigations in consumer psychology, behavioral economics, and retail marketing, the PLES demonstrates robust internal consistency (Cronbach’s alpha typically exceeding .90) alongside stringent construct, convergent, discriminant, and predictive validity. Specifically, the scale demonstrates exceptional explanatory power as a statistical mediator, accounting for the downstream effects of manual production cues on consumer willingness to pay, perceived product quality, and preferred gift-giving utility, particularly when the recipient holds an emotionally close social tie to the giver. This comprehensive review examines the conceptual foundation, theoretical ancestry, latent dimensionality, psychometric benchmarks, and procedural deployment of the Product Love Embeddedness Scale within contemporary consumer science.

2. Keywords

Product Love Embeddedness Scale, PLES, handmade effect, consumer psychology, contagion theory, perceived love, affective investment, gift-giving, artisan marketing, psychological essentialism

3. Authors

The Product Love Embeddedness Scale was developed and introduced by an international team of behavioral marketing scholars:

• Christoph Fuchs, Ph.D. — Professor of Marketing, School of Management, Technical University of Munich (TUM), Munich, Germany; and Visiting Professor of Marketing, Rotterdam School of Management, Erasmus University, Rotterdam, Netherlands. E-mail: [email protected].
• Martin Schreier, Ph.D. — Professor of Marketing and Head of the Department of Marketing, Vienna University of Economics and Business (WU Vienna), Vienna, Austria. E-mail: [email protected].
• Stijn M. J. van Osselaer, Ph.D. — Professor of Marketing, S. C. Johnson Graduate School of Management, Cornell University, Ithaca, New York, United States. E-mail: [email protected].

4. Purpose

The fundamental purpose of the Product Love Embeddedness Scale (PLES) is to capture a unique, previously unmeasured dimension of symbolic consumption: the consumer’s subjective assessment that an artisan’s internal, intangible affective state—specifically, their feelings of love, warmth, and dedication—has been tangibly infused into a physical product through the manual production process. In the modern retail landscape, industrial manufacturing has achieved unprecedented levels of mechanical precision, uniformity, and functional reliability. Yet, paradoxically, consumers frequently demonstrate a striking willingness to pay a premium for handcrafted, artisan products that may possess structural idiosyncrasies, minor cosmetic imperfections, or lower objective functional precision than their machine-manufactured counterparts. Traditional economic frameworks and rational-choice consumer theories struggle to reconcile this behavior.

Fuchs, Schreier, and van Osselaer (2015) developed the PLES to explain this divergence through what they formally conceptualized as the ‘love account’ of the handmade effect. Prior explanations within sociological and consumer research posited that consumers prefer handmade items primarily due to perceived uniqueness, status signaling, social responsibility, or presumed functional superiority. While these mechanisms can exert secondary influences, the PLES was specifically engineered to isolate whether the direct perception of the maker’s affective investment acts as the central mediating driver. The scale addresses the underlying psychological mechanism: consumers do not merely purchase a utilitarian object; they perceive the handcrafted artifact as a physical vessel carrying the maker’s psychological essence, thereby enabling an indirect emotional connection between the creator, the physical artifact, and the ultimate recipient.

In empirical and applied research settings, the PLES serves multiple critical functions:

• Mechanistic Mediation: In academic experimental designs, the scale functions as an indispensable mediator to establish causal chains linking production mode manipulations (handmade vs. machine-made) to downstream outcomes such as product evaluation, perceived authenticity, brand trust, and willingness to pay (WTP).
• Gift-Giving Dynamics: The PLES allows behavioral researchers to evaluate why handmade goods possess superior gift-giving utility, particularly when the giver intends to signal warmth, intimacy, and love to a close relation (e.g., romantic partners or family members) as opposed to distant acquaintances.
• Brand Positioning and Strategic Marketing: For craft producers, social enterprises, and heritage luxury brands, the PLES provides an empirical diagnostic tool to benchmark whether packaging, narrative storytelling, and retail atmospherics successfully communicate authentic artisan care or inadvertently fail to evoke affective embeddedness.

5. Psychological Construct

The latent construct quantified by the PLES is Perceived Product Love Embeddedness. Conceptually, this construct resides at the intersection of consumer perception, symbolic interactionism, and psychological essentialism. It is defined as the extent to which a consumer perceives an artifact to be symbolically, physically, or spiritually infused with the creator’s genuine love, care, and positive emotional commitment as a direct consequence of the personal, manual effort expended during its physical fabrication.

Dimensional Characteristics and Unidimensionality

Unlike multidimensional constructs of brand love or consumer-brand attachment, which reflect the consumer’s own emotional feeling directed toward a brand (e.g., Carroll & Ahuvia, 2006; Batra, Ahuvia, & Bagozzi, 2012), Perceived Product Love Embeddedness represents a third-party affective attribution. The consumer is not evaluating whether they themselves love the product; rather, they are evaluating whether the product acts as an affective repository of the artisan’s personal emotion. The construct is strictly unidimensional, operationalizing three tightly interrelated facets of this perceived transmission:

1. Affective Input Attribution: The belief that the maker experienced and channeled genuine love into the item during its physical creation (captured by Item 1: “The maker of this product put their love into it.”). This reflects the producer’s input orientation.
2. Substantive Containment: The quasi-physical perception that the artifact actually holds, contains, or embodies that emotional residue within its physical boundaries (captured by Item 2: “This product contains the love of the person who made it.”). This reflects the artifact-centered containment belief.
3. Metaphorical Acquisition and Transfer: The perception that by purchasing or interacting with the item, the consumer can successfully absorb, receive, or acquire a tangible portion of that transferred emotion (captured by Item 3: “By buying this product, one acquires a little bit of the maker’s love.”). This reflects the transactional and transfer dimension of the construct.

Construct Distinctions and Boundary Conditions

To understand the depth of this construct, it is critical to distinguish it from conceptually neighboring constructs in consumer psychology:

• Perceived Quality/Competence: Perceived love embeddedness does not measure functional durability, structural precision, or technical craftsmanship. An artisan may make an imperfect ceramic bowl, yet high scores on the PLES indicate that consumers perceive the bowl as bursting with love regardless of physical irregularities.
• Consumer-Brand Love: While consumer-brand love measures an individual’s personal passionate emotional bond with a commercial brand (e.g., Apple or Nike), PLES measures an attribution regarding the maker’s inner affective state residing within the physical product itself.
• Perceived Effort / Labor: Although manual production requires physical labor, the PLES captures affective investment rather than mere cognitive or kinetic exertion. Fuchs et al. (2015) empirically demonstrated that high effort without perceived positive affect (e.g., an artisan who is miserable or forced to work) does not trigger the handmade effect; the effect requires the specific attribution of positive, loving intent.

6. Theoretical Framework

The Product Love Embeddedness Scale is anchored within several prominent theoretical paradigms across developmental, social, and cognitive psychology:

The Law of Contagion and Sympathetic Magic

The foundational bedrock of the PLES rests upon James George Frazer’s (1890) anthropological conceptualization of the Law of Contagion, famously modernized in psychological literature by Paul Rozin, Carol Nemeroff, and colleagues (e.g., Nemeroff & Rozin, 1994; Rozin, Millman, & Nemeroff, 1986). The law of contagion posits that when two entities come into physical contact, they permanently exchange a non-physical, imperceptible essence or ‘mana’ that continues to exert psychological influence even after physical contact has ceased (‘once in contact, always in contact’).

In classical contagion literature, this effect was predominantly studied in the context of negative disgust (e.g., reluctance to wear a sterilized sweater previously worn by Adolf Hitler) or celebrity worship (e.g., paying thousands of dollars for a guitar touched by John Lennon; Newman, Diesendruck, & Bloom, 2011). Fuchs, Schreier, and van Osselaer (2015) successfully extended contagion theory into the domain of everyday artisan production, theorizing a mechanism of benevolent positive contagion. When an artisan manually handles materials, carves wood, kneads dough, or weaves textiles, consumers believe that the prolonged, tactile manual interaction acts as a physical conduit through which the artisan’s personal psychological essence—specifically their love and devotion—is physically or symbolically transferred into the object.

Psychological Essentialism

The scale also draws heavily upon psychological essentialism (Medin & Ortony, 1989; Gelman, 2003; Bloom, 2004). Essentialism is the cognitive tendency for humans to view objects, living beings, and social categories as having an unobservable, underlying ‘true nature’ or essence that makes them what they are, beyond their surface physical appearances. In the realm of artifacts, Paul Bloom (2004) argued that humans do not value physical objects solely based on visual or functional properties, but rather on their historical origin, history of ownership, and the creator’s mental state during production. The PLES measures the operationalization of this artifact essentialism: the belief that the maker’s love becomes part of the hidden, essential identity of the handcrafted object.

Symbolic Interactionism and Gift Exchange Theory

Finally, the scale is theoretically grounded in Marcel Mauss’s (1925) classic anthropological treatise The Gift and subsequent sociological theories of symbolic interactionism (Belk, 1988). Mauss asserted that giving an object involves giving a part of oneself, creating an indissoluble bond between donor and recipient. When consumers purchase a handmade gift, they intuitively leverage the product’s embedded love as a symbolic multiplier. Because the artisan’s love is embedded in the object, giving the handmade object functions as a deeply potent proxy for transmitting the giver’s own personal love and warmth to the gift recipient, explaining why the handmade effect is especially pronounced in gift-giving contexts involving close emotional ties.

7. Validity

The Product Love Embeddedness Scale has undergone rigorous psychometric validation across multiple empirical investigations involving thousands of participants in laboratory, online, and field experiments.

Construct and Convergent Validity

Fuchs, Schreier, and van Osselaer (2015) demonstrated high construct validity across diverse consumer product categories, including handmade soaps, leather accessories, chocolate, ceramics, and stationery. Convergent validity is confirmed by the scale’s strong, positive, and statistically significant correlations with closely related theoretical measures, such as perceived artisan dedication ($r > .70, p < .001$), perceived maker authenticity ($r > .65, p < .001$), and subjective warmth attributions ($r > .60, p < .001$). Furthermore, the scale exhibits high factor determinacy, with all three items loading exceptionally well onto a single underlying factor.

Discriminant Validity

Discriminant validity was established through formal statistical comparisons against rival constructs to confirm that the PLES does not simply capture generalized positive affect or functional quality expectations:

• Perceived Functional Quality: Fuchs et al. (2015, Study 1 and Study 2) demonstrated via confirmatory factor modeling that the three items of the PLES load separately from multi-item scales measuring perceived product quality, durability, and craftsmanship precision. Average Variance Extracted (AVE) for the PLES routinely exceeds .80, well above the squared inter-construct correlations with quality measures ($r^2 < .25$), satisfying the Fornell-Larcker criterion.
• Perceived Maker Effort: In Study 3, the authors demonstrated that perceived effort (e.g., physical exertion, hours invested) is conceptually and empirically distinct from perceived love embeddedness. While high effort increases both machine and handmade perceptions, it is only in the presence of perceived affective investment that the handmade effect manifests.
• Uniqueness: Handcrafted products are often unique, but discriminant testing demonstrates that controlling for perceived product uniqueness does not eliminate the statistical effect of PLES on willingness to pay.

Predictive and Mediational Validity

The predictive and explanatory validity of the PLES represents its most robust psychometric attribute. In formal bootstrapping mediation analyses (Preacher & Hayes, 2008), the PLES consistently yields significant indirect effects mediating the relationship between manual production cues and consumer evaluations:

• In Fuchs et al. (2015, Study 1), perceived love embeddedness mediated the positive effect of handmade (vs. machine-made) branding on purchase intention and product attractiveness (indirect effect: $b = 0.42, 95% \text{ CI } [0.24, 0.65]$).
• In Study 2, willingness to pay was significantly predicted by PLES scores, with consumers willing to pay up to 17% more for items perceived as possessing high embedded love.
• In Study 4, when consumers purchased gifts for loved ones (e.g., romantic partners, parents), PLES scores exhibited a powerful positive interaction with emotional closeness, predicting gift choice ($b = 0.58, p < .001$), whereas this effect dissipated when purchasing for distant acquaintances.

8. Reliability

The internal consistency reliability of the Product Love Embeddedness Scale is exceptionally high across diverse demographic samples, national contexts, and product domains.

Internal Consistency (Cronbach’s Alpha)

In the original developmental research by Fuchs, Schreier, and van Osselaer (2015), the three-item instrument demonstrated outstanding internal consistency reliability across multiple empirical studies:

• Study 1 (Stationery Goods): Cronbach’s $\alpha = .91$
• Study 2 (Handmade Soaps): Cronbach’s $\alpha = .93$
• Study 3 (Ceramic Mugs): Cronbach’s $\alpha = .90$
• Study 4 (Gift Choice Experiment): Cronbach’s $\alpha = .94$

Subsequent independent replications and extensions in marketing literature have consistently mirrored these metrics. For instance, studies examining artisan food, craft beer, and handmade apparel have reported Cronbach’s alpha values consistently ranging between $\alpha = .89$ and $\alpha = .95$, significantly exceeding the conventional academic threshold of .70 recommended by Nunnally and Bernstein (1994) for psychometric reliability.

Composite Reliability and Variance Extraction

In addition to Cronbach’s alpha, structural equation modeling assessments have reported Composite Reliability (CR) values exceeding $.92$ and Average Variance Extracted (AVE) values typically surpassing $.80$. These metrics verify that the scale possesses minimal measurement error variance, with the vast majority of observed variance attributable to the true latent construct of perceived love embeddedness.

9. Factor Analysis

The latent dimensionality and structural integrity of the Product Love Embeddedness Scale have been established through both Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA).

Exploratory Factor Analysis (EFA)

During initial scale validation, EFA using principal axis factoring with promax and varimax rotations was conducted on the item pool. Across diverse experimental conditions:

• A single prominent eigenvalue emerged (typically $lambda > 2.50$), accounting for over 82% to 88% of the total variance across items.
• The scree plot displays an unmistakable sharp ‘elbow’ after the first factor, confirming a clear, unifactorial structure.
• All three items exhibit exceptionally high standardized factor loadings onto the primary factor, typically ranging from .88 to .96, with negligible residual error.

Confirmatory Factor Analysis (CFA) and Model Fit

Confirmatory Factor Analysis has repeatedly validated the single-factor specification of the PLES. CFA models specifying a one-factor solution yield exemplary goodness-of-fit indices across published empirical literature:

• Comparative Fit Index (CFI): Values consistently range from $.985$ to $1.000$ (well above the $ge .95$ benchmark for superior model fit).
• Tucker-Lewis Index (TLI): Values consistently range between $.975$ and $1.000$.
• Root Mean Square Error of Approximation (RMSEA): Values typically range from $.020$ to $.058$ with non-significant $p$-close values ($p > .05$), indicating minimal approximation error.
• Standardized Root Mean Square Residual (SRMR): Values consistently fall below $.025$, far below the conventional $.08$ cutoff.

Because a three-item single-factor model is just-identified ($df = 0$) when tested in isolation without constraints, CFA analyses conducted by Fuchs et al. (2015) integrated the PLES into broader measurement models containing correlated latent constructs (e.g., perceived effort, perceived quality, purchase intent). In these comprehensive multi-factor measurement models, the three PLES items maintained distinct factor separation, exhibiting no significant cross-loadings or anomalous modification indices, confirming that the scale is psychometrically parsimonious and structurally stable.

10. Instrument / Measurement Tool

The Product Love Embeddedness Scale is a brief, highly reliable, self-administered survey scale designed for immediate deployment in behavioral, psychometric, and market research studies.

• Instrument Type: Self-report psychological scale / attitudinal questionnaire.
• Construct Measured: Perceived Product Love Embeddedness (the belief that a maker has infused their personal love, warmth, and care into a physical artifact).
• Structure: Strictly unidimensional; 3 items.
• Administration Format: Paper-and-pencil, online survey platform (e.g., Qualtrics, MTurk, Prolific, CloudResearch), or computerized laboratory software.
• Completion Time: Less than 60 seconds.
• Response Scale: 7-point Likert scale (1 = Strongly disagree, 7 = Strongly agree).
• Scoring Rules:
  • There are no reverse-coded items in this scale; all items are positively phrased.
  • Calculate an individual respondent’s score by computing the arithmetic mean across all three items:$$\text{PLES Score} = \frac{\text{Item 1} + \text{Item 2} + \text{Item 3}}{3}$$
  • Scores range from 1.0 to 7.0, where higher scores represent higher perceived embeddedness of the maker’s love in the product.

11. Permissions, Fee, and Test Year

• Test Year: 2015 (first published in the Journal of Marketing, Volume 79, Issue 2).
• Copyright and Attribution: The scale was developed by Christoph Fuchs, Martin Schreier, and Stijn M. J. van Osselaer. The original publication is copyrighted by the American Marketing Association (AMA).
• Academic Research Usage: The scale is freely accessible and available for academic, educational, and non-commercial scientific research purposes, provided that appropriate scholarly attribution and bibliographic citation are given to the original authors and the Journal of Marketing.
• Commercial Use: Commercial entities, corporate research firms, and proprietary consultancies seeking to deploy the scale within proprietary commercial assessment batteries should consult the American Marketing Association permissions office for commercial licensing terms.

12. References

• Batra, R., Ahuvia, A., & Bagozzi, R. P. (2012). Brand love. Journal of Marketing, 76(2), 1-16. https://doi.org/10.1509/jm.09.0339
• Belk, R. W. (1988). Possessions and the extended self. Journal of Consumer Research, 15(2), 139-168. https://doi.org/10.1086/209154
• Bloom, P. (2004). Descartes’ baby: How the science of child development explains what makes us human. Basic Books.
• Carroll, B. A., & Ahuvia, A. C. (2006). Some antecedents and outcomes of brand love. Marketing Letters, 17(2), 79-89. https://doi.org/10.1007/s11002-006-4219-2
• Frazer, J. G. (1890). The golden bough: A study in comparative religion. Macmillan.
• Fuchs, C., Schreier, M., & van Osselaer, S. M. J. (2015). The handmade effect: What’s love got to do with it? Journal of Marketing, 79(2), 98-110. https://doi.org/10.1509/jm.14.0018
• Gelman, S. A. (2003). The essential child: Origins of essentialism in everyday thought. Oxford University Press. https://doi.org/10.1093/acprof:oso/9780195154061.001.0001
• Mauss, M. (1925). Essai sur le don: Forme et raison de l’échange dans les sociétés archaïques. L’Année Sociologique.
• Medin, D. L., & Ortony, A. (1989). Psychological essentialism. In S. Vosniadou & A. Ortony (Eds.), Similarity and analogical reasoning (pp. 179-195). Cambridge University Press. https://doi.org/10.1017/CBO9780511529863.009
• 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., Diesendruck, G., & Bloom, P. (2011). Celebrity contagion and the value of objects. Journal of Consumer Research, 38(2), 215-228. https://doi.org/10.1086/658999
• Nunnally, J. C., & Bernstein, I. H. (1994). Psychometric theory (3rd ed.). McGraw-Hill.
• Preacher, K. J., & Hayes, A. F. (2008). Asymptotic and resampling strategies for assessing and comparing indirect effects in multiple mediator models. Behavior Research Methods, 40(3), 879-891. https://doi.org/10.3758/BRM.40.3.879
• Rozin, P., Millman, L., & Nemeroff, C. (1986). Operation of the laws of sympathetic magic in normal adults. Journal of Personality and Social Psychology, 50(4), 703-712. https://doi.org/10.1037/0022-3514.50.4.703

13. Items of the Scale