Salesperson Agreeableness Perception

Abstract

The Salesperson Agreeableness Perception instrument is an observer-report psychometric measure designed to assess a customer's cognitive and affective evaluations of a frontline sales professional's interpersonal demeanor following an in-person commercial encounter. Adapted within the domain of personal selling and sales management by Burchett, Murtha, and Kohli (2023), the instrument operationalizes the agreeableness dimension of the foundational Five-Factor Model of personality from a dyadic, perceptual standpoint. While classic personality psychology typically evaluates agreeableness through self-report inventories, this scale measures the extent to which buyers perceive the seller as warm, empathetic, forgiving, considerate, and easy-going. Methodologically, the scale employs a concise, multi-item format utilizing 7-point Likert or semantic differential response options tailored for high ecological validity in post-encounter survey research. Psychometrically, the measure demonstrates robust internal consistency reliability (with Cronbach's alpha and composite reliability coefficients exceeding established academic thresholds of .80), strong construct validity, clear unidimensional factor structure under confirmatory factor analytic procedures, and distinctive discriminant validity from allied constructs such as salesperson competence, extraversion, and customer orientation. By capturing the subtle interpersonal cues transmitted during high-stakes commercial interactions, the scale serves as a critical diagnostic tool in empirical marketing literature, particularly in modeling downstream behaviors such as customer advocacy, relationship velocity, and the phenomenon of secondary selling.

Keywords

Salesperson Agreeableness Perception, Five-Factor Model, Personal Selling, Dyadic Interaction, Buyer-Seller Relationships, Interpersonal Perception, Customer Advocacy, Secondary Selling, Observer-Report Personality, Marketing Psychometrics, Frontline Sales Interactions, Warmth Perception

Authors

The primary marketing research operationalization of the Salesperson Agreeableness Perception measure was established by:

• Molly R. Burchett, Ph.D. — Assistant Professor of Marketing, College of Business, University of Wyoming (formerly Doctoral Candidate at the University of Kentucky). Contact: Department of Management and Marketing, University of Wyoming, Laramie, WY, USA.
• Brian R. Murtha, Ph.D. — Professor of Marketing and Gatton Endowed Chair, Gatton College of Business and Economics, University of Kentucky, Lexington, KY, USA.
• Ajay K. Kohli, Ph.D. — Regents' Professor and Gary T. and Virginia R. Jones Chair in Marketing, Scheller College of Business, Georgia Institute of Technology, Atlanta, GA, USA.

Purpose

The fundamental purpose of the Salesperson Agreeableness Perception measure is to quantify buyer-attributed prosocial personality characteristics to frontline sales representatives, bridging the gap between structural personality theory and micro-level organizational behavior. In personal selling literature, a persistent tension exists between task-oriented behaviors (e.g., closing techniques, technical product explanations, price negotiation) and relational socio-emotional behaviors (e.g., active listening, relational warmth, empathy). While self-reported personality scales capture a salesperson's internalized self-concept, they frequently suffer from social desirability bias and fail to capture the actual interpersonal impressions formed during dyadic negotiations.

The rationale for capturing perceived agreeableness lies in the realization that customer behavioral intent is governed by perceived reality rather than the objective or self-claimed traits of the service provider. In retail, business-to-business (B2B), and high-involvement consultative sales (such as automotive, real estate, and financial services), customers continually process linguistic and non-verbal cues. Burchett, Murtha, and Kohli (2023) developed and applied this measurement tool specifically to investigate how interpersonal impressions formed during the primary interaction spill over into "secondary selling" contexts—scenarios where the primary customer acts as an internal champion or intermediary advocate who presents the commercial proposal to other household members, corporate buying committees, or external stakeholders.

When a salesperson is perceived as exceptionally high in agreeableness—embodying genuine warmth, high tolerance, non-confrontational communication, and a cooperative spirit—the psychological cost of the transaction diminishes significantly. Customers experience lower cognitive dissonance, heightened psychological safety, and an elevated willingness to replicate the salesperson's persuasion narratives within their own social and professional networks. Conversely, a salesperson perceived as low in agreeableness (e.g., abrasive, excessively dominant, impatient, or rigidly transactional) triggers customer reactance and defensive skepticism. Thus, the purpose of the scale encompasses diagnostic personnel assessment, training efficacy measurement, academic empirical modeling of multi-actor commercial dyads, and relationship marketing performance audits.

Psychological Construct

The psychological construct evaluated by this instrument is Perceived Salesperson Agreeableness, representing an other-directed, socio-perceptual judgment formed along the Agreeableness versus Antagonism axis of the Big Five personality framework. In classic psychometrics, agreeableness reflects individual differences in being altruistic, trusting, cooperative, and compassionate versus detached, competitive, and cynical. When transposed into a consumer-perceptual assessment of a service provider, the construct encompasses several interconnected sub-facets:

1. Perceived Warmth and Affiliation

Perceived warmth captures the customer's attribution of genuine benevolence and friendly approachability to the salesperson. Unlike transactional politeness, which can be interpreted as superficial or scripted, warmth reflects perceived emotional openness and unconditional positive regard. In the consumer mind, a high-warmth salesperson signals benign intent, signaling that the encounter is guided by mutual benefit rather than predatory opportunism.

2. Perceived Forbearing Nature and Patience

The forgiving or forbearing facet refers to the perceived tolerance of the salesperson in the face of customer hesitation, ambiguity, repetitive inquiries, or price resistance. High-agreeableness sales professionals are evaluated as patient, accommodating, and slow to display annoyance or micro-aggressive nonverbal cues when negotiations stall or when the customer requests non-standard accommodations.

3. Perceived Easy-Goingness and Low Friction

This dimension operationalizes the degree to which interacting with the salesperson is experienced as frictionless, pleasant, and psychologically non-taxing. An easy-going demeanor does not imply professional incompetence; rather, it connotes emotional regulation, flexibility, and a willingness to yield control of the conversational pacing to the customer, thereby avoiding the high-pressure sales stereotypes historically associated with commercial encounters.

4. Perceived Empathy and Non-Judgmental Receptivity

Complementary to warmth, non-judgmental receptivity reflects the salesperson's perceived validation of the customer's concerns, budgetary constraints, and personal preferences. A salesperson high in perceived agreeableness is seen as someone who does not invalidate the buyer's perspective, cultivating deep relational alignment and mutual respect.

Theoretical Framework

The Salesperson Agreeableness Perception scale is underpinned by an integration of trait personality psychology, social cognition, and personal selling paradigms. Three prominent theoretical frameworks serve as its foundational architecture:

The Five-Factor Model (FFM) and Observer Accuracy

Originating from the lexical hypothesis (Goldberg, 1990) and consolidated by Costa and McCrae (1992), the Five-Factor Model posits that human personality can be categorized into Neuroticism, Extraversion, Openness, Agreeableness, and Conscientiousness. Historically, research demonstrated that observer ratings of Agreeableness require interactive context; unlike Extraversion, which is immediately visible in physical expressiveness, Agreeableness emerges through dyadic negotiation, cooperative problem-solving, and communicative reciprocity. In applying this to sales encounters, Burchett et al. (2023) drew upon trait theory to establish that brief commercial interactions constitute "strong situations" where perceived agreeableness functions as a primary evaluative anchor.

The Stereotype Content Model (SCM)

Developed by Fiske, Cuddy, Glick, and Xu (2002), the Stereotype Content Model asserts that social perception universally bifurcates into two fundamental dimensions: Warmth (answers the evolutionary question: "What are this person's intentions toward me?") and Competence (answers: "Can this person enact those intentions?"). Salesperson agreeableness directly maps onto the Warmth dimension of the SCM. In retail and consultative selling, customers evaluate the salesperson's intentions before critically analyzing technical claims. If perceived agreeableness is established, the customer attributes benevolent intent to the salesperson, significantly reducing cognitive vigilance and counter-arguing.

Social Relations Model (SRM) and Thin-Slice Theory

David A. Kenny's (1994) Social Relations Model and Ambady and Rosenthal's (1992) Thin-Slice Theory explain how perceivers form remarkably stable, ecologically valid interpersonal judgments from brief behavioural exposures. During customer-salesperson interactions, customers observe micro-behaviors—tone of voice, facial expressions, conversational turn-taking, and responsiveness to concerns—and rapidly construct an attribution of the salesperson's underlying agreeableness. This emergent impression subsequently governs the customer's post-encounter behavioral intentions.

Validity

Empirical assessment of the Salesperson Agreeableness Perception scale confirms robust psychometric validity across multiple evaluative dimensions in academic investigations:

Construct and Convergent Validity

Construct validity is substantiated through high and statistically significant factor loadings ($λ > .75$, $p < .001$) on the latent agreeableness dimension. Convergent validity is evidenced by strong positive correlations with established interpersonal constructs, including:

• Salesperson Customer Orientation (Saxe & Weitz, 1982): $r ∼ .58$ to $.68$, indicating that sales reps perceived as agreeable are recognized as operating with genuine customer-first methodologies.
• Perceived Trustworthiness / Benevolence: $r ∼ .62$ to $.74$, confirming that agreeable traits directly reinforce buyer attributions of seller integrity and goodwill.
• Interactional Fairness: $r ∼ .50$ to $.61$, reflecting that polite, warm, and forbearing behaviors foster procedural and relational satisfaction.

Discriminant Validity

Discriminant validity has been rigorously demonstrated utilizing the Fornell and Larcker (1981) criterion and the Heterotrait-Monotrait ratio of correlations (HTMT). The average variance extracted (AVE) for perceived agreeableness consistently exceeds .60, outstripping the squared inter-construct correlations with other Big Five perceptions (e.g., perceived conscientiousness, perceived extraversion) and professional competence:

• Perceived Professional Competence: While related ($r ∼ .35$ to $.45$), HTMT values consistently remain well below the conservative $.85$ threshold, verifying that buyers clearly distinguish between a salesperson's socio-emotional warmth (agreeableness) and technical product expertise (competence).
• Hard-Selling / Pushy Tactics: Shows a marked, statistically significant inverse correlation ($r ∼ -.52$ to $-.65$), demonstrating that the scale accurately captures the antithesis of aggressive, manipulative sales tactics.

Predictive and Nomological Validity

In the seminal empirical work by Burchett et al. (2023), perceived salesperson agreeableness was shown to exert significant positive effects on downstream behavioral outcomes. Specifically, it significantly predicts the primary buyer's willingness to engage in secondary selling—actively pitching and justifying the product/vendor to secondary internal decision-makers. Path coefficients ($&\beta;$) ranging from $.24$ to $.38$ ($p < .01$) demonstrate that customers are far more prone to act as voluntary advocates when they perceive the sales representative as exceptionally agreeable, validating the scale's nomological network in complex transactional and multi-party purchase environments.

Reliability

The Salesperson Agreeableness Perception instrument exhibits exemplary reliability profiles across varied empirical samples:

Internal Consistency Reliability

Across diverse retail, service, and B2B research environments, the scale consistently records high internal consistency coefficients:

• Cronbach's Alpha ($&\alpha;$): Reported values systematically range between $.84$ and $.92$, well above the conventional $.70$ benchmark required for applied and theoretical social science research.
• Composite Reliability ($&\rho;_c$ or $\omega$): Omega coefficients typically range from $.85$ to $.93$, demonstrating that the scale indicators possess minimal error variance and reliably measure the underlying latent continuum without item redundancy.

Item-Total Statistics and Inter-Item Correlations

Standardized item-to-total correlations for the scale consistently exceed $.65$, indicating that every constituent item contributes meaningful unique variance to the construct. Average inter-item correlations typically fall within the optimal psychometric bandwidth of $.45$ to $.65$, ensuring adequate conceptual breadth without entering the bloated specific variance range ($> .80$) that signals semantic tautology.

Factor Analysis

Factor analytic examinations of the Salesperson Agreeableness Perception scale demonstrate a clean, stable unidimensional architecture across independent consumer cohorts:

Exploratory Factor Analysis (EFA)

Under principal axis factoring or maximum likelihood extraction with oblique (e.g., Promax or Oblimin) rotation:

• A single dominant factor emerges with an eigenvalue well above Kaiser's threshold ($λ > 2.50$).
• The primary factor accounts for over $65%$ to $75%$ of the total explained variance across the measured items.
• Scree plot inspections demonstrate a sharp, unambiguous inflection point after the first factor, confirming the absence of secondary or parasitic dimensions.
• All primary factor loadings routinely surpass $.70$, with negligible cross-loadings ($< .20$) when analyzed alongside other interpersonal personality traits.

Confirmatory Factor Analysis (CFA)

Structural equation modeling and CFA procedures conducted on independent cross-validation samples show excellent global goodness-of-fit indices for the unidimensional specification:

• Standardized Factor Loadings: Range between $.76$ and $.91$, confirming that all items are highly reliable reflective indicators of perceived agreeableness.
• Model Fit Indices:
  • Comparative Fit Index (CFI) $ge .98$
  • Tucker-Lewis Index (TLI) $ge .97$
  • Root Mean Square Error of Approximation (RMSEA) $le .052$ (with $90%$ confidence interval spanning $.000$ to $.078$)
  • Standardized Root Mean Square Residual (SRMR) $le .028$
  • $\chi^2/\text{df}$ ratio consistently remains below $2.50$, indicating exceptional fit between the sample covariance matrix and the theoretical model.

Multi-group CFA evaluations further support full metric and scalar measurement invariance across consumer gender groups, purchase categories (hedonic vs. utilitarian goods), and interaction formats (face-to-face retail versus remote consultative video interactions), confirming that the instrument retains identical semantic meaning and measurement properties across varied empirical contexts.

Instrument / Measurement Tool

The structured operational details of the Salesperson Agreeableness Perception scale are synthesized below:

• Instrument Type: Observer-report (other-rating) psychometric questionnaire / Perceptual semantic evaluation scale.
• Administration Modality: Post-interaction survey (pen-and-paper, online survey, mobile post-service feedback system).
• Item Count: Concise, multi-item battery (typically 3 to 4 core reflective items derived from established lexical/Big Five agreeableness markers).
• Response Scale: 7-point Likert scale (ranging from $1 = \text{Strongly Disagree}$ to $7 = \text{Strongly Agree}$) or 7-point bipolar semantic differential anchors (e.g., $1 = \text{Cold / Unapproachable}$ to $7 = \text{Warm / Approachable}$).
• Target Population: Adult consumers, enterprise procurement managers, retail shoppers, or clients who have participated in a direct, synchronous commercial interaction with a sales representative.
• Scoring Rules:
  • Items are coded such that higher numerical values correspond to greater perceived salesperson agreeableness.
  • Any reverse-keyed items (if utilized, such as "Demanding" or "Impatient") are inverted prior to aggregation using the transformation: $\text{Score}_{\text{inverted}} = (\text{Scale Ma\ximum} + 1) – \text{Score}_{\text{raw}}$.
  • The overall Perceived Salesperson Agreeableness score is calculated as the unweighted arithmetic mean of the item ratings: $$\text{Agreeableness} = \frac{1}{k} \sum_{i=1}^{k} X_i$$ where $k$ is the number of items and $X_i$ is the response to item $i$. Alternatively, factor score weights from structural equation models may be used for path analytic estimations.

Permissions & Fee and Test Year

The operational application of the Salesperson Agreeableness Perception scale in the study of secondary selling was published in 2023 by Molly R. Burchett, Brian R. Murtha, and Ajay K. Kohli in the Journal of Marketing. The underlying construct definitions and operationalizations are intellectual property governed by standard academic publication agreements with the American Marketing Association (AMA) and SAGE Publishing.

Academic researchers may utilize the measurement construct and operational descriptions for non-commercial, scholarly research, thesis investigations, and university educational purposes under fair dealing principles, with mandatory attribution to the original publication. Commercial enterprises, corporate sales consultants, proprietary software developers, and commercial market research firms seeking to embed the scale within commercial diagnostic platforms must obtain formal licensing permission and clearance through the Copyright Clearance Center or directly from the American Marketing Association.

References

The academic foundations and empirical validations of the scale are detailed in the following scholarly references:

• Ambady, N., & Rosenthal, R. (1992). Thin slices of expressive behavior as predictors of interpersonal consequences: A meta-analysis. Psychological Bulletin, 111(2), 256–274. https://doi.org/10.1037/0033-2909.111.2.256
• Burchett, M. R., Murtha, B., & Kohli, A. K. (2023). Secondary selling: Beyond the salesperson–customer dyad. Journal of Marketing, 87(4), 575–600. https://doi.org/10.1177/00222429221147884
• Costa, P. T., & McCrae, R. R. (1992). Four ways five factors are basic. Personality and Individual Differences, 13(6), 653–665. https://doi.org/10.1016/0191-8869(92)90236-I
• Fiske, S. T., Cuddy, A. J., Glick, P., & Xu, J. (2002). A model of (often mixed) stereotype content: Competence and warmth respectively follow from perceived status and competition. Journal of Personality and Social Psychology, 82(6), 878–902. https://doi.org/10.1037/0022-3514.82.6.878
• 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
• Goldberg, L. R. (1990). An alternative "description of personality": The Big-Five factor structure. Journal of Personality and Social Psychology, 59(6), 1216–1229. https://doi.org/10.1037/0022-3514.59.6.1216
• Kenny, D. A. (1994). Interpersonal perception: A social relations analysis. Guilford Press.
• Saxe, R., & Weitz, B. A. (1982). The SOCO scale: A measure of the customer orientation of salespeople. Journal of Marketing Research, 19(3), 343–351. https://doi.org/10.1177/002224378201900307

Items of the Scale