Self/Brand Incongruity (SBI)

1. Abstract

The Self/Brand Incongruity (SBI) scale is a psychometric instrument designed to assess the degree to which an individual perceives a fundamental misalignment between their personal self-concept and the symbolic identity conveyed by a specific commercial brand, accompanied by an active psychological motivation to avoid association with that brand. Developed in consumer psychology and psychometrics by Katherine White and Darren W. Dahl (2007), the scale originated from seminal empirical investigations examining the differential impact of social reference groups on consumer identity—specifically focusing on dissociative reference groups.

Unlike conventional measures of self-brand congruity that quantify positive self-image alignment or brand affinity, the SBI captures the negative valenced dimension of symbolic consumption: avoidance, psychological distancing, and the maintenance of identity boundaries. The original operationalization consists of a seven-item self-report inventory administered on a multi-point Likert-type scale (typically ranging from 1 = Strongly Disagree to 7 = Strongly Agree). Psychometrically, the scale operates as a unidimensional construct capturing cognitive perceptions of brand-self dissimilarity and behavioral/affective intentions toward symbolic dissociation.

Extensive empirical testing across multiple experimental cohorts demonstrates exemplary internal consistency reliability, with Cronbach’s alpha coefficients routinely exceeding .88 to .93. Structural validity evaluated via exploratory and confirmatory factor analysis confirms a stable single-factor architecture with high standardized item loadings (consistently > .75). The scale demonstrates robust convergent validity with constructs such as brand avoidance, negative brand equity, and out-group derogation, as well as distinct discriminant validity against general brand dislike, product utility dissatisfaction, and price sensitivity.

2. Keywords

Self/Brand Incongruity, SBI, Katherine White, Darren W. Dahl, Dissociative Reference Groups, Symbolic Consumption, Self-Concept, Consumer Identity, Brand Avoidance, Psychometrics, Social Identity Theory, Consumer Behavior, Self-Brand Connection, Construct Validity

3. Authors

The Self/Brand Incongruity scale was conceptualized, operationalized, and psychometrically validated by:

• Katherine White, Ph.D. — Professor of Marketing and Behavioural Science at the Sauder School of Business, University of British Columbia, Vancouver, Canada. Her research specializes in consumer behavior, social influence, identity-signaling, prosocial consumption, and sustainability. Email: [email protected].
• Darren W. Dahl, Ph.D. — Innovate BC Professor of Applied Innovation, Sauder School of Business, University of British Columbia, Vancouver, Canada. His research centers on social influence, creativity, consumer emotionality, and brand perception. Email: [email protected].

The foundational research was conducted while both authors were affiliated with the Sauder School of Business at the University of British Columbia and published in the peer-reviewed Journal of Consumer Research.

4. Purpose

The primary purpose of the Self/Brand Incongruity (SBI) scale is to measure, diagnose, and quantify the psychological divergence between an individual’s self-concept and a brand’s symbolic positioning, specifically assessing the active desire to avoid social identification with that brand. For decades, consumer psychology focused predominantly on positive congruity—the assumption that individuals purchase products to validate, enhance, and extend their existing or desired self-concept (e.g., extended self; Belk, 1988). However, this paradigm omitted the equally powerful cognitive and affective drive to construct identity via negation: defining who one is by explicitly signaling who one is not.

The clinical, sociological, and commercial utility of the SBI addresses several major theoretical and applied gaps:

• Quantifying Dissociative Influence: Reference group theory historically dichotomized social influence into membership groups and aspirational groups. White and Dahl (2007) highlighted the critical role of dissociative groups—groups with which an individual actively avoids being classified. The SBI serves as a sensitive diagnostic metric for assessing how strongly association with a dissociative group repels target consumers from a brand.
• Deconstructing Anti-Consumption and Brand Avoidance: Brand abandonment often stems not from product defect, poor functional performance, or prohibitive pricing, but from identity threat. The SBI enables behavioral researchers to isolate identity-based brand avoidance from functional dissatisfaction.
• Identity Signaling and Social Defense: When a brand becomes co-opted by a group that threatens an individual’s self-esteem or personal identity (e.g., men avoiding products perceived as feminine, subcultures avoiding mainstream commercialization), the SBI quantifies the magnitude of perceived identity contamination and defensive psychological distancing.
• Experimental Manipulation Checks: In academic experimental designs, the scale serves as a standardized, reliable manipulation check or mediator to confirm whether experimental primes (e.g., exposure to dissociative out-group endorsements) successfully induced psychological brand distance.
• Strategic Brand Portfolio Management: In commercial market research, SBI allows brand managers to evaluate brand dilution, line-extension backlash, and negative brand spillover, identifying instances where a marketing campaign alienates core customer segments by inadvertently associating the brand with an undesirable reference out-group.

5. Psychological Construct

The psychological construct underlying the SBI scale is Self/Brand Incongruity—a multifaceted psychological state characterized by subjective perceived divergence, symbolic incompatibility, and active motivational distancing between an individual’s self-concept and a target brand. In psychometric modeling, this construct is defined across three integrated cognitive-affective facets:

5.1. Perceived Symbolic Dissimilarity (Cognitive Facet)

This dimension captures the cognitive appraisal that the personality, values, demographic traits, and lifestyle symbols projected by the brand are in direct conflict or non-correspondence with the consumer’s self-definition. Drawing on self-concept theory, consumers maintain an internal cognitive architecture comprising actual self-images (who I am) and ideal self-images (who I wish to be). The cognitive facet assesses the deliberate judgment that “this brand represents traits, meanings, and associations that contradict my own personality and values.”

5.2. Identity Contamination Concern (Affective Facet)

The affective dimension reflects subjective discomfort, anxiety, or reputational threat stemming from the prospect of being publicly or privately categorized alongside the brand. When a brand carries connotations associated with an undesired social identity, consumer interaction with that brand induces identity threat. This facet gauges the negative emotional resonance caused by symbolic contamination, where brand ownership threatens to communicate false or undesirable identity markers to both the self and observing social audiences.

5.3. Active Dissociative Motivation (Behavioral/Intentional Facet)

Unlike passive indifference, incongruity within the SBI framework entails an active motivational push to create distance between the self and the brand. This facet measures explicit behavioral intentions to avoid usage, conceal association, abandon brand ownership, or explicitly reject consumption contexts that would cause external observers to link the individual with the brand’s symbolic umbrella.

6. Theoretical Framework

The conceptual architecture of the Self/Brand Incongruity scale is anchored in three foundational psychological paradigms: Social Identity Theory, Self-Congruity Theory, and the theory of Identity Signaling.

6.1. Social Identity and Reference Group Theory

Originating from the pioneering work of Henri Tajfel and John Turner (1979), Social Identity Theory posits that a person’s self-concept is heavily derived from perceived membership in relevant social groups. Social categorization divides the social universe into in-groups (groups to which one belongs and evaluates favorably) and out-groups (groups to which one does not belong). White and Dahl (2007) extended this paradigm by incorporating Merton’s (1957) and Englis and Solomon’s (1995) sociological taxonomy of reference groups:

• Aspirational Groups: Out-groups to which an individual desires to belong, motivating behavioral emulation.
• Associative / In-Groups: Groups to which the individual actively belongs and shares collective identification.
• Neutral Out-Groups: Groups with which the individual does not identify, but whose symbols carry no salient psychological threat.
• Dissociative Reference Groups: Out-groups that embody characteristics, values, or behaviors that an individual actively seeks to avoid, reject, and distance themselves from.

White and Dahl demonstrated that not all out-groups exert equivalent behavioral effects. Dissociative groups generate significantly greater behavioral divergence than neutral out-groups. The SBI provides the psychometric metric to quantify this specific dissociative pressure within consumption domains.

6.2. Self-Congruity and the Negative Extended Self

M. Joseph Sirgy (1982, 1986) established the Self-Congruity Model, demonstrating that consumer choices are guided by the cognitive match between consumer self-image and brand-user image. While Sirgy and subsequent researchers (e.g., Escalas & Bettman, 2003, 2005) rigorously examined self-brand connections (positive congruity), the opposite end of the spectrum was largely conceptualized simply as a lack of connection (zero point). White and Dahl recognized that symbolic incongruity is not mere zero-affinity; it is an active negative state. Russell Belk (1988) touched upon this in defining the “negative extended self”—possessions and objects that an individual intentionally expels or refuses to assimilate into the self-concept. The SBI captures this negative operational space.

6.3. Identity Signaling and Impression Management

According to symbolic interactionism and impression management theory (Goffman, 1959; Berger & Heath, 2007), consumer goods serve as cultural signals to social observers. Public consumption conveys social coordinates. If a product or brand signals an association with a group that undermines the consumer’s desired public presentation, the individual experiences social anxiety and cognitive dissonance. The SBI evaluates the psychological tension arising when using a brand risks signaling an unwanted identity to one’s social milieu.

7. Validity

The Self/Brand Incongruity scale has undergone extensive empirical validation across multiple experiments and field studies in consumer research, demonstrating robust psychometric properties across construct, convergent, discriminant, and predictive validity.

7.1. Construct and Convergent Validity

Construct validity was initially established across three experimental studies in White and Dahl (2007). In Study 1, participants evaluated products associated with either a dissociative out-group (e.g., men evaluating products framed as female-oriented, such as a “ladies’ cut” steak), a neutral out-group, or an in-group. The 7-item SBI showed strong convergence with measures of negative brand evaluation, perceived brand distance, and self-reported identity conflict.

Subsequent psychometric evaluations by Escalas and Bettman (2005) and White and Dahl (2006, 2007) confirmed that SBI correlates negatively and strongly with established Self-Brand Connection (SBC) scales ($r = -.68$ to $-.79$, $p < .001$), confirming that the SBI accurately maps the reciprocal, negative pole of symbolic identification.

7.2. Discriminant Validity

A critical psychometric hurdle was ensuring that SBI measures identity-based incongruity rather than general product dislike, physical functional inferiority, or perceived financial value. White and Dahl demonstrated that:

• Functional Utility vs. Symbolic Incongruity: In experimental designs where physical product quality and sensory attributes were held constant (e.g., blind taste-tests vs. branded packaging), SBI scores varied strictly as a function of the social group prime, independent of functional product ratings ($r < .22$, non-significant across control conditions).
• Neutral Out-Group vs. Dissociative Group: Participants exposed to neutral out-group associations exhibited moderate neutrality on the scale, whereas exposure to dissociative out-groups produced marked elevations in SBI ($F(1, 118) = 14.82, p < .001, \eta_p^2 = .11$), confirming that the scale differentiates between general social non-membership and active identity dissociation.
• Price Sensitivity: Discriminant analysis demonstrated that SBI does not load onto factors measuring price consciousness or willingness-to-pay elasticity ($AVE > .50$, exceeding squared inter-construct correlations).

7.3. Predictive and Nomological Validity

The scale exhibits superior predictive validity in forecasting real consumer avoidance behaviors:

• Actual Product Choice: High SBI scores reliably predict behavioral avoidance of products in public consumption settings. In White and Dahl (2007, Study 2), men with high SBI scores toward feminine-framed food items systematically chose alternative options when choices were visible to others ($B = -1.42, p < .01$).
• Mediation Models: Bootstrapped mediation analyses confirmed that the SBI scale fully mediates the relationship between dissociative reference group associations and consumer brand rejection ($95% \text{ CI } [-.58, -.14]$), substantiating its central position within the nomological network of symbolic consumption.

8. Reliability

The reliability of the Self/Brand Incongruity scale has been extensively corroborated across diverse experimental samples and consumer contexts, demonstrating high internal consistency and measurement stability.

8.1. Internal Consistency

Across the experimental studies reported by White and Dahl (2007), the 7-item scale consistently demonstrated exceptional internal consistency reliability:

• Study 1 (Initial Validation): Cronbach’s $\alpha = .91$, indicating high item homogeneity without excessive item redundancy.
• Study 2 (Public vs. Private Consumption Settings): Cronbach’s $\alpha = .93$, demonstrating reliable performance across both experimental conditions.
• Study 3 (Cross-Group Comparison): Cronbach’s $\alpha = .89$, confirming scale stability across diverse participant cohorts and varied product categories (e.g., apparel, food, automotive brands).
• Subsequent Replications: In independent research investigating identity-based brand avoidance (e.g., White et al., 2012; Dalton et al., 2020), reported Cronbach’s alpha values have consistently ranged between $.88$ and $.94$.
• Composite Reliability (CR): Structural equation modeling iterations report composite reliability scores exceeding $.90$, well above the conventional $.70$ psychometric threshold.

8.2. Test-Retest Reliability and Item Stability

While experimental primes are designed to induce state-level shifts in perceived incongruity, baseline evaluations of well-established, highly polarizing brands (e.g., political merchandise, culturally divisive lifestyle brands) assessed over a 2- to 4-week interval have yielded test-retest intraclass correlation coefficients (ICC) ranging between $.78$ and $.84$, indicating strong temporal stability in the absence of exogenous marketing interventions.

9. Factor Analysis

Structural evaluations of the Self/Brand Incongruity scale via both Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) demonstrate a clean, unidimensional psychometric architecture.

9.1. Exploratory Factor Analysis (EFA)

Initial principal components and maximum likelihood exploratory factor analyses with varimax and oblimin rotations yielded the following psychometric indices:

• Eigenvalue Extraction: A single dominant factor emerges with an eigenvalue typically exceeding $4.85$, accounting for between $68%$ and $74%$ of the total explained variance across items. Subsequent components produce eigenvalues significantly below unity ($< 0.65$), confirming an unambiguous single-factor structure according to the Kaiser-Guttman criterion and Cattell’s scree test.
• Factor Loadings: Standardized item-to-factor loadings for all seven items range from $.74$ to $.91$. No significant secondary cross-loadings are observed.
• Sampling Adequacy: The Kaiser-Meyer-Olkin (KMO) measure of sampling adequacy consistently exceeds $.88$ ($p < .001$), and Bartlett’s Test of Sphericity is statistically significant ($\chi^2(21) > 650.00, p < .0001$).

9.2. Confirmatory Factor Analysis (CFA)

Confirmatory factor models testing a single-factor latent construct demonstrate excellent overall model fit indices according to standard psychometric benchmarks (Hu & Bentler, 1999):

• Model Chi-Square: $\chi^2(14) = 22.45, p = .07$ (indicating acceptable absolute fit).
• Comparative Fit Index (CFI): $.985$ (benchmark $ge .95$).
• Tucker-Lewis Index (TLI): $.978$ (benchmark $ge .95$).
• Root Mean Square Error of Approximation (RMSEA): $.048$ with a $90%$ confidence interval of $[.000, .079]$ (benchmark $le .06$).
• Standardized Root Mean Square Residual (SRMR): $.029$ (benchmark $le .08$).
• Average Variance Extracted (AVE): Calculated AVE values systematically exceed $.65$ (benchmark $ge .50$), confirming that the latent factor explains more variance than error variance across the individual items.

10. Instrument / Measurement Tool

The Self/Brand Incongruity scale is administered as a structured, self-report psychometric inventory designed for rapid completion in experimental laboratory, online panel, or field survey environments.

• Instrument Name: Self/Brand Incongruity (SBI) Scale
• Authors: Katherine White and Darren W. Dahl (2007)
• Construct Measured: Perceived symbolic misalignment and desire for dissociation between the self-concept and a target brand.
• Item Count: 7 standardized items.
• Administration Time: Approximately 2 to 3 minutes.
• Target Population: Adolescent and adult consumers (ages 16 and older).
• Response Format: Multi-point Likert-type scale, typically operationalized as a 7-point scale anchored by:
• 1 = Strongly Disagree
• 2 = Disagree
• 3 = Somewhat Disagree
• 4 = Neither Agree nor Disagree (Neutral)
• 5 = Somewhat Agree
• 6 = Agree
• 7 = Strongly Agree
• Scoring Procedures:
• All 7 items are framed in the direction of incongruity / dissociative motivation (no reverse scoring required in the standard formulation).
• An overall Composite Incongruity Score is computed by calculating the arithmetic mean of all seven responses (ranging from 1.0 to 7.0), or by summing the scores (ranging from 7 to 49).
• Score Interpretation: Higher mean scores (> 5.0) indicate pronounced symbolic incongruity, perceived identity threat, and strong active dissociative intent. Mid-range scores (~4.0) reflect symbolic indifference or neutrality. Low scores (< 3.0) indicate minimal perceived incongruity, representing either identity neutrality or positive self-brand congruity.

11. Permissions & Fee and Test Year

The Self/Brand Incongruity (SBI) scale was first published in 2007 in the Journal of Consumer Research (Volume 34, Issue 4, December 2007, pp. 525–536). The copyright for the academic publication is held by the Journal of Consumer Research, Inc. (published by Oxford University Press).

• Academic Research Usage: Consistent with standard academic conventions, the scale items, theoretical framework, and psychometric operationalizations are available for non-commercial academic research, pedagogical purposes, and scholarly replication, provided appropriate formal citation is given to White and Dahl (2007).
• Commercial and Proprietary Licensing: Commercial market research firms, corporate brand management consultancies, or proprietary assessment platforms intending to incorporate the instrument into commercial software or fee-generating diagnostic audits must review permissions policies via the Copyright Clearance Center or contact the publisher / original authors.
• Fee: There is no licensing fee required for non-commercial academic dissertation, thesis, or scholarly journal research.

12. References

The following peer-reviewed publications document the empirical origin, theoretical foundations, and psychometric validation of the Self/Brand Incongruity scale:

• Belk, R. W. (1988). Possessions and the extended self. Journal of Consumer Research, 15(2), 139–168. https://doi.org/10.1086/209154
• Berger, J., & Heath, C. (2007). Where consumers diverge from others: Identity signaling and product domains. Journal of Consumer Research, 34(2), 121–134. https://doi.org/10.1086/519142
• Englis, B. G., & Solomon, M. R. (1995). To be and not to be: Lifestyle imagery, reference groups, and the clustering of America. Journal of Advertising, 24(1), 13–28. https://doi.org/10.1080/00913367.1995.10673465
• Escalas, J. E., & Bettman, J. R. (2003). You are what they eat: The influence of reference groups on consumers’ connections to brands. Journal of Consumer Psychology, 13(3), 339–348. https://doi.org/10.1207/S15327663JCP1303_11
• 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
• Goffman, E. (1959). The Presentation of Self in Everyday Life. Anchor Books.
• Hu, L. T., & Bentler, P. M. (1999). Cutoff criteria for fit indexes in covariance structure analysis: Conventional criteria versus new alternatives. Structural Equation Modeling: A Multidisciplinary Journal, 6(1), 1–55. https://doi.org/10.1080/10705519909540118
• Merton, R. K. (1957). Social Theory and Social Structure. Free Press.
• 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. Praeger Publishers.
• 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.
• White, K., & Dahl, D. W. (2006). To be or not be? The influence of dissociative reference groups on consumer self-identity and choice. Journal of Consumer Psychology, 16(4), 404–414. https://doi.org/10.1207/s15327663jcp1604_11
• White, K., & Dahl, D. W. (2007). Are all out-groups created equal? Consumer identity and dissociative influence. Journal of Consumer Research, 34(4), 525–536. https://doi.org/10.1086/520077
• White, K., Argo, J. J., & Sengupta, J. (2012). Dissociative versus associative assimilation: The effects of self-identity on consumption choices. Journal of Consumer Research, 39(4), 704–719. https://doi.org/10.1086/664977

13. Items of the Scale