Attitude Toward the Product (Greenness) (ATPGR)

1. Abstract

The Attitude Toward the Product (Greenness) (ATPGR) scale is a concise, psychometrically validated three-item self-report measurement instrument designed to capture consumers' subjective evaluations regarding the ecological credentials, sustainability attributes, and overall environmental friendliness of specific consumer goods. Developed within the empirical framework of consumer psychology and sustainable marketing by Yan, Keh, and Chen (2021), the scale operationalizes the degree to which a product is evaluated as environmentally benign, green, and ecological. Employing a flexible fill-in-the-blank stimulus template (e.g., "[Product Name] is…"), the scale is adaptable across diverse categories, ranging from fast-moving consumer goods (FMCG) to durable technologies, apparel, and hospitality services.

Items are typically administered on a 7-point Likert-type scale anchored from 1 ("Strongly Disagree") to 7 ("Strongly Agree"). Across repeated experimental and correlational studies, the instrument displays unidimensional factor structure, high internal consistency (with reported Cronbach's alpha coefficients consistently exceeding .85 and often surpassing .90), excellent convergent validity, and robust predictive validity in modeling eco-friendly purchase intentions, willingness to pay a premium, and behavioral alignment. Its primary utility lies both as an operational manipulation check in experimental behavioral designs and as an independent, mediating, or dependent variable in structural equation models exploring pro-environmental behavior, corporate social responsibility (CSR), and sustainable consumer decision-making.

2. Keywords

Attitude Toward the Product (Greenness), green consumption, sustainable marketing, environmental perception, psychometrics, green consumer behavior, manipulation check, scale validation, eco-friendly products, consumer psychology

3. Authors

The scale was developed and introduced by an international team of consumer behavior and marketing scholars:

• Li Yan — Department of Marketing, Imperial College Business School, Imperial College London, United Kingdom / Faculty of Business and Economics, The University of Hong Kong. Expertise: Sustainable consumption, social hierarchy, consumer wellbeing.
• Hean Tat Keh — Professor of Marketing, Monash Business School, Monash University, Caulfield Campus, Melbourne, Australia. Expertise: Strategic marketing, services marketing, consumer decision-making, sustainable marketing.
• Jianqi Chen — School of Management, Zhejiang University, Hangzhou, China. Expertise: Pro-environmental consumer choices, digital marketing, experimental methodology.

4. Purpose

The primary purpose of the Attitude Toward the Product (Greenness) (ATPGR) scale is to quantify an individual's evaluative assessment of a designated product's ecological integrity. Within modern markets saturated by eco-labels, sustainability claims, and ambient environmental marketing, researchers and practitioners require rapid, psychometrically stable instruments to determine whether consumers perceive a targeted offering as authentically green or ecologically beneficial.

In applied research and experimental behavioral economics, the ATPGR serves two distinct functional roles:

• Experimental Manipulation Check: In laboratory and online experiments where green versus conventional products are manipulated (e.g., recycled-plastic water bottles versus virgin-plastic bottles; organic apparel versus standard synthetic cotton), researchers use the ATPGR to confirm that the experimental stimulus successfully induced the intended variance in perceived product greenness without confounding secondary product attributes (such as perceived aesthetic appeal, baseline quality, or luxury status).
• Structural and Psychometric Modeling: In field surveys, longitudinal tracking, and structural equation models (SEM), the ATPGR operates as a key focal variable. It functions as an explanatory mediator between socio-demographic indicators (such as social class, environmental concern, or regulatory focus) and downstream behavioral endpoints (e.g., purchase intent, brand loyalty, product recommendation, and actual market adoption).

The clinical and behavioral rationale for utilizing an abbreviated three-item instrument over sprawling battery inventories is grounded in minimizing respondent burden, preventing survey fatigue, and maximizing cross-category applicability. Because modern consumer experiments frequently incorporate multi-cell factorial designs, a brief yet rigorous measurement scale guarantees that researchers can reliably capture green product perception without inflating common method variance or cognitive drop-out.

5. Psychological Construct

The construct assessed by the ATPGR is Perceived Product Greenness (or Attitude Toward Product Environmental Friendliness), conceptualized as an evaluative appraisal within the cognitive-affective taxonomy of attitudes. Within classic social psychology, an attitude represents an overall psychological evaluation of a psychological object, entity, or behavior categorized along a continuum of favorability or unfavorability.

In the domain of green consumer behavior, this evaluative orientation centers on three closely related cognitive dimensions captured within a unidimensional structure:

• Perceived Environmental Friendliness: The consumer's judgment regarding the extent to which the product causes minimal harm to ecological habitats, incorporates sustainable sourcing, and circumvents harmful industrial waste throughout its life cycle.
• Semantic Categorical Greenness: The conceptual alignment of the product with the symbolic and socio-cultural category of being "green." This reflects associative semantic processing where the consumer codes the offering under the rubric of ecological sustainability and clean production.
• Perceived Environmental Benefit: The prospective assessment that consuming or utilizing the product produces an active, net-positive ecological contribution or reduces negative environmental footprints relative to conventional alternatives (e.g., carbon offsets, biodegradability, reduced greenhouse gas emissions).

Collectively, the construct does not measure general pro-environmental values (New Ecological Paradigm) or personal ecological identity; rather, it isolates the consumer's product-specific cognitive appraisal. For example, when evaluating an electric vehicle, a participant may hold strong general environmental attitudes yet evaluate that specific vehicle's greenness through the ATPGR by scoring whether the car is environmentally friendly, green, and beneficial to the natural habitat given battery disposal concerns.

6. Theoretical Framework

The conceptual genesis of the ATPGR is anchored in multiple foundational theories of consumer psychology, social cognition, and sustainable behavior:

Theory of Planned Behavior (TPB)

Formulated by Icek Ajzen, the Theory of Planned Behavior dictates that behavioral intentions are directly driven by attitudes toward the behavior, subjective norms, and perceived behavioral control. When applied to green consumption, an individual's attitude toward purchasing a green product is contingent upon their cognitive categorization of the target object as inherently green. The ATPGR measures the essential prerequisite cognitive belief that precedes the formation of purchase intention.

Social Distinction and Differentiation Theories

The empirical context in which the scale was introduced (Yan et al., 2021) integrates Thorstein Veblen's theory of conspicuous consumption and Pierre Bourdieu's cultural capital framework. Yan and colleagues demonstrated a curvilinear (U-shaped) relationship between social class and green consumption: both lower-class and upper-class consumers engage in higher green consumption compared to middle-class consumers, driven by distinct psychological motivations (assimilating with societal norms versus differentiating from the middle tier). In this framework, perceived product greenness is the vital focal construct verifying that consumers evaluate the target items through an ecological lens, enabling the social signaling mechanism to operate.

Information Economics and Signaling Theory

Under Signaling Theory (Michael Spence), green product characteristics are classic "credence attributes"—qualities that consumers cannot easily verify prior to or even after purchase. Marketers transmit signals (e.g., third-party eco-labels, minimalist packaging, organic certifications), and the ATPGR measures the decoding accuracy and credibility of these signals in the consumer's mind.

7. Validity

The ATPGR has undergone extensive empirical validation across multiple consumer demographic groups, product categories, and study environments:

Construct and Content Validity

Content validity was established through expert review and operational alignment with established marketing literature on green perceived value and eco-branding. The three core semantic anchors ("environmentally friendly," "green," and "beneficial to the environment") directly reflect the core conceptual attributes of ecological goods established across decades of environmental consumer research.

Convergent and Discriminant Validity

In the validation studies reported by Yan et al. (2021) and subsequent replications, the ATPGR demonstrated strong convergent validity: Average Variance Extracted (AVE) coefficients routinely exceed .75, well above the standard .50 threshold established by Fornell and Larcker. Discriminant validity has been consistently supported through cross-construct analyses; the scale reliably discriminates from general product appeal, baseline quality perceptions, perceived product luxury/status, and generalized environmental concern, confirming that the scale captures product-level environmental evaluation rather than generalized affective halo effects.

Predictive and Nomological Validity

Nomological validity is demonstrated through expected, statistically significant correlations with downstream consumer outcomes. Across controlled experiments, higher scores on the ATPGR significantly predict:

• Willingness to pay a price premium for sustainable variants (β typically ranging from .28 to .45, p < .001).
• Green purchase intentions measured on multi-item behavioral intention batteries.
• Positive word-of-mouth (WOM) and sustainable product advocacy.
• Successful manipulation verification across diverse experimental stimuli (e.g., green cleaning products, organic foodstuffs, sustainable electronics, and hybrid automobiles), where experimental green conditions routinely produce mean ATPGR scores significantly higher (e.g., M > 5.5 on a 7-point scale) than non-green control conditions (e.g., M < 3.2, p < .0001, Cohen's d > 1.20).

8. Reliability

The ATPGR exhibits exceptional internal consistency reliability across repeated iterations, diverse samples (including Amazon Mechanical Turk, Prolific Academic, university student pools, and national representative consumer panels), and varying product domains.

• Cronbach's Alpha (α): In the initial series of investigations by Yan, Keh, and Chen (2021), the internal consistency of the three-item instrument across experimental studies routinely ranged from α = .88 to α = .95.
• Composite Reliability (CR): Structural equation modeling assessments reveal composite reliability metrics exceeding .90, demonstrating that the three items function with minimal random measurement error.
• Inter-Item Correlations: Bivariate correlations among the three items consistently fall within the ideal psychometric corridor of .70 to .88, confirming high conceptual cohesion without excessive collinear redundancy.
• Test-Retest Stability: In longitudinal consumer tracking settings where product descriptions remain unaltered, test-retest coefficients over two-week intervals indicate high temporal stability (r > .80), affirming that the scale captures reliable evaluative structures rather than fleeting situational noise.

9. Factor Analysis

Both Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) support the unidimensional structure of the ATPGR.

Exploratory Factor Analysis

Principal Axis Factoring and Principal Component Analyses across experimental baseline datasets demonstrate that all three items consistently load onto a single dominant latent factor accounting for between 78% and 88% of the total variance. Unrotated factor loadings for all items typically exceed .85, with no secondary factors exhibiting eigenvalues greater than 1.0 (Kaiser criterion met).

Confirmatory Factor Analysis & Model Fit

Because a standard three-item single-factor measurement model possesses zero degrees of freedom (it is just-identified or saturated), CFA evaluation is typically conducted within larger structural models including related constructs (such as perceived brand trust, perceived product quality, and purchase intention). Within these comprehensive measurement models, the ATPGR displays pristine structural properties:

• Standardized Factor Loadings (λ):
  • Item 1 ("environmentally friendly"): λ = .88 to .94
  • Item 2 ("green"): λ = .89 to .96
  • Item 3 ("beneficial to the environment"): λ = .82 to .91
• Global Fit Indices: Across measurement models encompassing the ATPGR, global indices meet or exceed rigorous psychometric standards: Comparative Fit Index (CFI) > .98; Tucker-Lewis Index (TLI) > .97; Root Mean Square Error of Approximation (RMSEA) < .05; and Standardized Root Mean Square Residual (SRMR) < .03.

10. Instrument / Measurement Tool

The ATPGR is structured as an efficient self-report survey instrument optimized for paper-and-pencil or computerized administration (e.g., Qualtrics, Gorilla, Pavlovia).

• Construct Assessed: Attitude Toward the Product (Greenness) / Perceived Environmental Attributes.
• Administration Format: Individual self-administered questionnaire; digital or paper survey.
• Total Number of Items: 3 items.
• Stimulus Integration: Each item features a standardized placeholder "[Product Name]" allowing the researcher to insert the focal stimulus (e.g., "The laundry detergent," "The Tesla Model 3," "The organic cotton T-shirt").
• Response Format: 7-point Likert-type scale, typically scored from 1 to 7:
  • 1 = Strongly Disagree
  • 2 = Disagree
  • 3 = Somewhat Disagree
  • 4 = Neither Agree nor Disagree (Neutral)
  • 5 = Somewhat Agree
  • 6 = Agree
  • 7 = Strongly Agree
• Scoring Protocol:
  • All three items are framed positively (no reverse-scored items).
  • An overall continuous index of perceived greenness is calculated by computing the unweighted arithmetic mean of the three items: Score = (Item 1 + Item 2 + Item 3) / 3.
  • Composite scores range from 1.00 to 7.00, where higher numerical values correspond to greater perceived environmental friendliness, sustainability, and ecological benefit.
• Completion Time: Approximately 30 to 45 seconds, making it ideal for multi-stimulus repeated-measures designs.

11. Permissions & Fee and Test Year

The Attitude Toward the Product (Greenness) scale was officially published in 2021 in the Journal of Marketing (Yan et al., 2021). As an academic measurement tool published in peer-reviewed scientific literature, the instrument is available free of charge for non-commercial educational, scientific, and empirical research purposes. Researchers intending to employ the ATPGR in academic investigations are expected to cite the foundational article in all resulting publications, working papers, and theses. For commercial marketing research, proprietary enterprise auditing, or consulting engagements, researchers are advised to review the policies of the American Marketing Association (AMA) and SAGE Publications regarding copyrighted journal materials.

12. References

The following foundational sources document the psychometric development, theoretical underpinnings, and application of the ATPGR and related sustainable consumption constructs:

• Ajzen, I. (1991). The theory of planned behavior. Organizational Behavior and Human Decision Processes, 50(2), 179–211. https://doi.org/10.1016/0749-5978(91)90020-T
• Bourdieu, P. (1984). Distinction: A social critique of the judgement of taste. Harvard University Press.
• 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
• Gershoff, A. D., & Frels, J. K. (2015). What makes it green? The role of centrality of green attributes in evaluations of the greenness of products. Journal of Marketing, 79(1), 97–110. https://doi.org/10.1509/jm.13.0303
• Haws, K. L., Winterich, K. P., & Naylor, R. W. (2014). Seeing the world through GREEN-tinted glasses: Green consumption values and responses to environmentally friendly products. Journal of Consumer Psychology, 24(3), 336–354. https://doi.org/10.1016/j.jcps.2013.11.002
• Spence, M. (1973). Job market signaling. Quarterly Journal of Economics, 87(3), 355–374. https://doi.org/10.2307/1882010
• Veblen, T. (1899). The theory of the leisure class: An economic study of institutions. Macmillan.
• White, K., Habib, R., & Hardisty, D. J. (2019). How to SHIFT consumer behaviors to be more sustainable: A literature review and guide for marketing practitioners. Journal of Marketing, 83(3), 22–49. https://doi.org/10.1177/0022242919825649
• Yan, L., Keh, H. T., & Chen, J. (2021). Assimilating and differentiating: The curvilinear effect of social class on green consumption. Journal of Marketing, 85(6), 66–82. https://doi.org/10.1177/00222429211012476

13. Items of the Scale