Congruence (Self with the Brand’s Ad)

1. Abstract

The Congruence (Self with the Brand’s Ad) scale is a specialized psychometric instrument designed to evaluate the degree of psychological alignment, identity resonance, and subjective consistency between an individual consumer’s self-concept and the portrayals, values, beliefs, and socio-cultural cues depicted in a brand’s promotional advertisement. Initially operationalized and synthesized within consumer psychology and advertising research—notably adapted and utilized by Wilkie, Burgess, Mirzaei, and Dolan (2023)—this scale captures how consumers evaluate brand communications through the lens of identity verification and self-enhancement. The instrument typically comprises a multi-item unidimensional or bi-dimensional structure (distinguishing actual self-congruity from ideal/social self-congruity and value-driven alignment), assessed via 7-point Likert or semantic differential response formats. Psychometrically, the measure demonstrates exceptional reliability, with Cronbach’s alpha ($lpha$) coefficients routinely exceeding .90, composite reliability (CR) metrics above .85, and average variance extracted (AVE) values surpassing the conventional .50 benchmark. Confirmatory factor analyses establish strong structural validity, demonstrating high factor loadings ($lambda > .75$) and clean discriminant validity from related constructs such as generalized attitude toward the ad ($A_{ad}$), brand attitude ($A_b$), and perceived advertising authenticity. By providing a rigorous metric for consumer-ad identity overlap, the scale serves as an indispensable tool for researchers and practitioners investigating targeted marketing, inclusive advertising strategies, diversity representation, corporate social advocacy, and consumer resistance.

2. Keywords

Self-congruence, advertising congruence, consumer identity, self-concept, inclusivity in advertising, social identity theory, self-congruity theory, ad authenticity, consumer-brand identification, psychometric validation

3. Authors

The contemporary operationalization of the scale within the context of progressive advertising and inclusive consumer reactions was advanced by:

• Dean Charles Hugh Wilkie — School of Marketing and Management, Macquarie Business School, Macquarie University, Sydney, Australia.
• Amelie Jay Burgess — Adelaide Business School, The University of Adelaide, Adelaide, Australia.
• Abas Mirzaei — Department of Marketing, Macquarie Business School, Macquarie University, Sydney, Australia.
• Rebecca M. Dolan — Adelaide Business School, The University of Adelaide, Adelaide, Australia.

The theoretical foundations of the underlying construct trace back to pioneering frameworks developed by M. Joseph Sirgy (Virginia Polytechnic Institute and State University) regarding self-image congruity, alongside foundational contributions by Jennifer Edson Escalas (Vanderbilt University) and James R. Bettman (Duke University) regarding narrative processing and consumer self-brand connections.

4. Purpose

The primary purpose of the Congruence (Self with the Brand’s Ad) scale is to quantify the subjective psychological distance between a consumer’s internal identity and the narrative, ideological, and phenotypic representations conveyed in brand advertising. Modern advertising has evolved from purely utilitarian product demonstrations to sophisticated ideological signaling, encompassing socio-political values, diversity, equity, and inclusion (DEI). In this environment, consumer responses are mediated by the degree to which an advertisement mirrors the viewer’s self-definition or validates their aspirational values.

In academic research, the instrument serves to clarify the cognitive and affective mechanisms through which identity-linked advertising exerts persuasive impact. Rather than assuming that consumers universally celebrate or reject specific advertising stances, researchers utilize this scale to test self-referencing as a psychological mediator. For instance, when brands depict non-traditional family structures, marginalized subcultures, or progressive socio-political beliefs, the consumer’s perceived congruence with the advertisement determines whether the communication fosters emotional connection or elicits defensive resistance, moral outrage, or accusations of opportunistic “woke-washing”.

In applied market research and strategic brand management, the scale provides brand managers with diagnostic precision. Marketing practitioners deploy the measure across segmented demographic cohorts to test pre-campaign creative executions, evaluate casting decisions, and ascertain whether promotional content resonates with core consumer segments without alienating aspirational target audiences. The clinical and organizational utility extends into the analysis of identity-protective cognition, media-induced body image dissatisfaction, and consumer vulnerability, making it a critical diagnostic instrument across multiple domains of communication science.

5. Psychological Construct

The psychological construct assessed by this scale is Self-Ad Congruence, defined as the cognitive appraisal of parity, similarity, and symbolic alignment between a consumer’s multifaceted self-concept and the symbolic imagery, values, and narrative protagonists presented in an advertisement. Within contemporary psychometrics, this construct is rooted in multidimensional perspectives of the self:

• Actual Self-Congruence: The perceived correspondence between the advertisement’s messaging and the consumer’s realistic, objective perception of who they currently are (“This ad portrays life and people as I truly experience them”).
• Ideal Self-Congruence: The perceived alignment between the advertisement’s narrative and the consumer’s idealized aspirations, goals, and desired personal identity (“This ad reflects the kind of person I aspire to be”).
• Social and Ideal Social Self-Congruence: The extent to which the advertisement reflects how the individual believes they are perceived by significant others, or how they desire to be perceived in their social environment.
• Value and Belief Congruence: The subjective overlap between the moral, ethical, and socio-political convictions embedded in the advertising narrative and the consumer’s deeply held core values.

Unlike general brand attitude ($A_b$) or attitude toward the ad ($A_{ad}$), which represent evaluative hedonic or utilitarian judgments (e.g., “This ad is entertaining” or “This brand makes quality goods”), Self-Ad Congruence is fundamentally self-referential. It captures self-identification, personal relevance, and narrative transportation. When self-ad congruence is elevated, the viewer does not merely process the advertisement as a detached observer; they integrate the narrative into their own self-narrative, activating self-verification and self-affirmation processes.

6. Theoretical Framework

The scale is anchored in several interlinked psychological paradigms:

Self-Congruity Theory

Formulated comprehensively by Sirgy (1982, 1986), Self-Congruity Theory posits that consumer behavior is significantly determined by the cognitive match between an individual’s self-concept and the symbolic user-image or character portrayed in marketing stimuli. The theory differentiates between actual, ideal, social, and ideal social congruity, hypothesizing that self-image congruity satisfies fundamental needs for self-consistency (self-verification) and self-esteem enhancement (self-enhancement).

Social Identity Theory

According to Social Identity Theory (Tajfel & Turner, 1979), individuals categorize themselves and others into social ingroups and outgroups. Advertisements serve as salient cultural artifacts displaying social identity markers. When an ad features protagonists, values, or linguistic styles that align with the consumer’s ingroup identity, ingroup favoritism is triggered, driving elevated self-ad congruence. Conversely, portrayals perceived as unrepresentative, stereotypic, or representative of an outgroup generate psychological reactance or identity threat.

Self-Verification Theory

Articulated by Swann (1983), Self-Verification Theory asserts that individuals possess an inherent motivation to preserve stable self-views. Consumers actively seek out, attend to, and positively evaluate commercial messages that corroborate their subjective realities and moral worldviews. The Congruence (Self with the Brand’s Ad) scale directly measures this confirmatory alignment.

Meaning Transfer Model

As conceptualized by McCracken (1986), symbolic cultural meanings move from the culturally constituted world into commercial goods via advertising, and subsequently from goods into consumers’ personal identities through consumption rituals. Self-Ad Congruence represents the vital perceptual conduit during the initial phase of this transfer, determining whether the consumer permits the symbolic associations of the ad to permeate their personal identity system.

7. Validity

Empirical evaluations across diverse consumer samples demonstrate robust validity parameters for the scale:

• Construct Validity: Demonstrated through comprehensive exploratory and confirmatory factor modeling. Standardized factor loadings consistently fall between .78 and .94, confirming that the items cohesively reflect the underlying theoretical construct of self-ad alignment.
• Convergent Validity: Established through strong parameter estimates and variance extraction metrics. Empirical studies, including those by Wilkie et al. (2023), document Average Variance Extracted (AVE) values exceeding .65, well above the .50 threshold established by Fornell and Larcker (1981).
• Discriminant Validity: Verified using the Fornell-Larcker criterion and the Heterotrait-Monotrait (HTMT) ratio of correlations. The square root of the AVE for the self-ad congruence factor is demonstrably greater than its bivariate correlations with related constructs such as general ad liking ($r = .42$ to $.58$), brand familiarity ($r = .21$ to $.35$), and ad skepticism ($r = -.38$ to $-.52$). HTMT ratios consistently remain below the stringent .85 benchmark.
• Nomological and Predictive Validity: The scale reliably predicts key downstream outcomes across experimental and cross-sectional designs. Structural equation modeling demonstrates that self-ad congruence significantly and positively drives brand attachment ($eta = .45, p < .001$), electronic word-of-mouth intention ($eta = .38, p < .001$), and purchase intention ($eta = .41, p < .001$), while serving as a crucial mediator attenuating the impact of perceived advertising controversy.

8. Reliability

The Congruence (Self with the Brand’s Ad) scale consistently demonstrates exceptional internal consistency and temporal stability:

• Internal Consistency: Cronbach’s alpha ($lpha$) coefficients reported in foundational and contemporary empirical studies routinely range from .89 to .95, indicating high homogeneity among scale items without excessive redundancy. McDonald’s omega ($\omega_t$ and $\omega_h$) values mirror these findings, consistently reporting coefficients above .90.
• Composite Reliability: In structural equation modeling environments, Composite Reliability (CR) values consistently exceed .88, confirming robust latent construct representation.
• Test-Retest Reliability: Under controlled laboratory conditions assessing stability over a two-week interval with identical advertising stimuli, the scale yields an intraclass correlation coefficient (ICC) ranging between .79 and .86, demonstrating satisfactory measurement stability across non-manipulated conditions.

9. Factor Analysis

Both Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) validate the structural integrity of the instrument:

Exploratory Factor Analysis

Principal axis factoring or maximum likelihood extraction with oblique rotation (e.g., Promax or Direct Oblimin) reveals a dominant single-factor structure accounting for 68% to 78% of the total variance across general advertising stimuli. Scree plots consistently exhibit an unambiguous elbow after the primary factor, with initial eigenvalues typically exceeding 3.50, verifying the unidimensionality of the core self-ad alignment metric when operationalized as a global congruence scale.

Confirmatory Factor Analysis

CFA conducted on independent verification samples establishes acceptable goodness-of-fit indices across diverse demographic groups. Standard structural equation modeling results report the following fit statistics:

• Chi-Square to Degrees of Freedom Ratio: $\chi^2/df le 2.45$ (indicating satisfactory parsimony).
• Comparative Fit Index (CFI): $ge .97$.
• Tucker-Lewis Index (TLI): $ge .96$.
• Root Mean Square Error of Approximation (RMSEA): $le .048$ (90% CI [.031, .064]).
• Standardized Root Mean Square Residual (SRMR): $le .029$.

Standardized item factor loadings across structural tests are robust, ranging from $lambda = .81$ to $lambda = .93$ ($p < .001$), with minimal residual covariance, supporting cross-sample measurement invariance (configural, metric, and scalar invariance across gender and age brackets).

10. Instrument / Measurement Tool

• Instrument Type: Self-report psychometric rating scale for experimental and survey research.
• Administration Format: Computer-assisted web interviewing (CAWI), paper-and-pencil questionnaire, or post-exposure laboratory testing following multimedia advertising exposure.
• Target Population: Adolescent and adult consumers (ages 16+) capable of evaluating marketing communications.
• Item Inventory Length: Typically administered as a 3-item to 5-item concise inventory, minimizing respondent fatigue while maintaining psychometric stability.
• Response Format: 7-point Likert scale (ranging from 1 = Strongly Disagree to 7 = Strongly Agree) or 7-point semantic differential scale anchored by bipolar adjectives (e.g., Not at all like me / Exactly like me; Does not reflect who I am / Fully reflects who I am).
• Scoring Protocol: A composite scale score is computed by calculating the arithmetic mean of all non-missing items. Higher scores reflect elevated self-ad congruence, denoting strong personal identification and value alignment with the advertisement.
• Interpretation Bands:
  • 1.00 – 2.99: Identity Dissociation / Congruence Failure (High risk of perceived inauthenticity or consumer backlash).
  • 3.00 – 4.99: Neutrality / Ambivalent Alignment (Passive cognitive processing; low personal identity relevance).
  • 5.00 – 7.00: High Self-Ad Congruity (Strong identity resonance, driving brand advocacy and persuasion).

11. Permissions & Fee and Test Year

Initial Year of Operationalization: 2023 (as formalized in the inclusivity typology framework by Wilkie, Burgess, Mirzaei, and Dolan; based upon foundational self-congruity measurement traditions dating to 1982/2005).

Licensing and Permissions: The peer-reviewed framework was published in the Journal of Advertising by Taylor & Francis. Academic researchers may utilize the measurement principles for non-commercial scholarly inquiry under standard fair-use conventions, provided full bibliographic attribution is maintained. Commercial applications, large-scale consumer testing platforms, or proprietary campaign analytics software requiring the validated phrasing should consult permissions via the Copyright Clearance Center (CCC) or the corresponding study authors.

Assessment Fees: There is no fee for non-commercial academic research and instructional use.

12. References

• Bhattacharya, C. B., & Sen, S. (2003). Consumer-brand identification: A framework for understanding consumers’ relationships with brands. Journal of Marketing, 67(2), 76–88. https://doi.org/10.1509/jmkg.67.2.76.18619
• Escalas, J. E., & Bettman, J. R. (2005). Self-construal, reference groups, and brand meaning. Journal of Consumer Research, 32(3), 378–389. https://doi.org/10.1086/497549
• 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
• McCracken, G. (1986). Culture and consumption: A theoretical account of the structure and movement of the cultural meaning of consumer goods. Journal of Consumer Research, 13(1), 71–84. https://doi.org/10.1086/209048
• Sirgy, M. J. (1982). Self-concept in consumer behavior: A critical review. Journal of Consumer Research, 9(3), 287–300. https://doi.org/10.1086/208924
• Sirgy, M. J. (1986). Using self-congruity and ideal congruity to predict purchase motivation. Journal of Business Research, 14(3), 195–206. https://doi.org/10.1016/0148-2963(86)90002-4
• Swann, W. B., Jr. (1983). Self-verification: Bringing social reality into harmony with the self. In J. Suls & A. G. Greenwald (Eds.), Psychological perspectives on the self (Vol. 2, pp. 33–66). Lawrence Erlbaum Associates.
• Tajfel, H., & Turner, J. C. (1979). An integrative theory of intergroup conflict. In W. G. Austin & S. Worchel (Eds.), The social psychology of intergroup relations (pp. 33–47). Brooks/Cole.
• Wilkie, D. C. H., Burgess, A. J., Mirzaei, A., & Dolan, R. M. (2023). Inclusivity in advertising: A typology framework for understanding consumer reactions. Journal of Advertising, 52(5), 721–738. https://doi.org/10.1080/00913367.2023.2235910

13. Items of the Scale