The Sense of Positive Interpersonal Impact (SPII)<\/strong> scale is a psychometric instrument designed to assess an individual\u2019s subjective evaluation of the meaningful, beneficial difference their personal actions have exerted on another person\u2019s welfare, emotional state, or practical circumstances. Conceptualized and validated by Sara Hanson and Hong Yuan (2018), the scale was originally formulated to evaluate interpersonal psychological empowerment<\/a> within social consumption environments, specifically investigating how mechanisms such as peer-to-peer social coupon sharing stimulate feelings of social efficacy and altruistic agency. Drawing robust theoretical foundations from the prosocial impact<\/a> literature (e.g., Adam Grant\u2019s work on perceived prosocial impact) and employee psychological empowerment paradigms (e.g., Gretchen Spreitzer\u2019s foundational dimensions of meaning, competence, self-determination, and impact), the SPII adapts these organizational concepts into interpersonal, dyadic, and consumer-to-consumer contexts.<\/p>\n Structurally, the instrument operates as a unidimensional measurement model comprising six self-report items evaluated on a 7-point Likert scale<\/a>, ranging from 1 (“Strongly Disagree”) to 7 (“Strongly Agree”). Across multiple experimental and field trials conducted by Hanson and Yuan, the scale has exhibited exemplary psychometric properties, consistently demonstrating high internal consistency (Cronbach\u2019s α typically exceeding .90, composite reliability values surpassing .92, and Average Variance Extracted exceeding .65). Confirmatory factor analyses confirm a clean single-factor structure with robust fit indices, high standardized factor loadings (.75 to .93), and robust discriminant validity against related constructs such as generalized self-efficacy, warm glow, transactional satisfaction, and basic social utility. The SPII provides organizational scholars, social psychologists, behavioral economists, and marketing researchers with a rigorous, parsimonious metric for capturing the psychological rewards realized when individuals perceive themselves as benevolent change agents within their personal networks.<\/p>\n Sense of Positive Interpersonal Impact, prosocial impact, interpersonal empowerment, psychological empowerment, social coupons, altruistic utility, perceived social impact, psychometrics, scale validation, prosocial behavior, helper’s high, social exchange theory<\/p>\n The Sense of Positive Interpersonal Impact (SPII) scale was authored by Sara Hanson<\/strong> and Hong Yuan<\/strong>.<\/p>\n The instrument was initially detailed and published in the peer-reviewed empirical paper: “Friends with benefits: Social coupons as a strategy to enhance customers’ social empowerment”<\/em>, published in the Journal of the Academy of Marketing Science<\/em> (2018), Volume 46, Issue 4, pages 768\u2013787.<\/p>\n The primary purpose of the Sense of Positive Interpersonal Impact (SPII) scale is to quantify an individual’s conscious perception that their voluntary behaviors have enhanced the well-being, financial posture, subjective utility, or experiential satisfaction of specific other people. While existing psychometric tools historically assessed prosocial tendencies as generalized trait altruism (e.g., the Self-Report Altruism scale) or evaluated feelings of impact strictly within formal employment structures (e.g., Grant\u2019s perceived prosocial impact scale or Spreitzer\u2019s psychological empowerment scale), empirical researchers lacked a dedicated, psychometrically robust tool capable of capturing transactional and interpersonal micro-interventions occurring in daily social and consumer life.<\/p>\n Hanson and Yuan (2018) recognized this critical theoretical gap in consumer psychology and micro-sociology. In commercial environments, firms increasingly delegate promotional and marketing power directly to end-users via “social coupons,” referral rewards, and reciprocal discount structures. Rather than viewing these programs through an exclusively economic or transaction-cost lens, Hanson and Yuan posited that sharing such privileges activates deep-seated psychological mechanisms of interpersonal empowerment. To evaluate whether individuals experienced psychological enrichment from these actions, researchers required a metric that isolates the subjective realization: “My targeted action produced tangible, positive outcomes for someone I care about or interact with.”<\/em><\/p>\n Beyond consumer research, the SPII serves vital functions across several allied disciplines:<\/p>\n The psychological construct captured by the Sense of Positive Interpersonal Impact resides at the intersection of perceived prosocial impact<\/a>, relational agency, and interpersonal psychological empowerment. Psychologically, human beings possess a fundamental drive not merely to belong, but to perceive themselves as competent, valuable contributors to the lives of conspecifics. When an actor initiates a prosocial behavior\u2014such as providing information, sharing financial or material resources, offering emotional consolation, or transferring a tangible benefit\u2014the cognitive processing that follows involves an appraisal of behavioral efficacy.<\/p>\n This appraisal can be broken down into three interdependent psychological constituents, which jointly constitute the core construct measured by the SPII:<\/p>\n At the most fundamental cognitive level, the construct requires the actor to perceive that a concrete, non-trivial benefit has been successfully transferred to or unlocked for the recipient. If an individual sends a referral code or delivers advice that is ignored, discarded, or deemed worthless, this dimension remains dormant. The SPII measures the conviction that the delivered resource holds genuine utility, value, or relief for the other person.<\/p>\n Crucially, the construct does not measure general optimism regarding another person\u2019s good fortune; rather, it measures agentic causality<\/em>. The actor explicitly attributes the improvement in the recipient’s well-being to their own volitional act. Drawing from attribution theory, the individual constructs an internal attribution: “Their improved condition is a direct consequence of my intervention.” This attributional loop is vital for cultivating self-efficacy and mitigating feelings of powerlessness in social contexts.<\/p>\n Finally, the construct captures the subjective significance and emotional resonance of the outcome. The actor feels that the intervention mattered on a human level. It transcends mechanical utility by generating feelings of interpersonal closeness, social affirmation, and mutual benefit. The actor experiences their social existence as meaningful because it has tangibly enriched the experiential reality of another person.<\/p>\n Importantly, the SPII is distinct from generalized self-esteem or broad self-efficacy. Whereas generalized self-efficacy (e.g., as measured by Chen, Gully, and Eden) evaluates an omnibus belief in one’s capacity to overcome general challenges across diverse scenarios, the SPII isolates localized, dyadic, and prosocial efficacy. Similarly, it differs from empathy<\/a> or empathic concern; empathy represents an emotional and cognitive capacity to share and understand another’s affective state, whereas SPII represents an evaluative judgment regarding the success and consequence<\/em> of one’s own corrective or enhancing behavior directed toward that state.<\/p>\n The development of the Sense of Positive Interpersonal Impact is anchored in three interconnected theoretical traditions within psychological and organizational science: Prosocial Impact Theory, Psychological Empowerment Theory, and Self-Determination Theory.<\/p>\n The foremost intellectual lineage of the SPII stems from Adam Grant\u2019s (2007, 2008) formulation of relational job design and prosocial impact. Grant postulated that motivation, performance, and psychological flourishing are significantly enhanced when individuals are given structural opportunities to see and understand the positive impact of their actions on other human beings. In Grant’s framework, “perceived prosocial impact” serves as a critical psychological mediator linking behavioral effort to emotional exhaustion buffers, intrinsic motivation, and task persistence. Hanson and Yuan (2018) extended Grant\u2019s framework beyond the boundaries of formal workplace structures into spontaneous, informal, and consumer-mediated interpersonal relations. They posited that everyday actions\u2014such as conferring an exclusive benefit or sharing valuable consumption opportunities\u2014activate precisely the same prosocial feedback loop, transforming an ordinary interpersonal exchange into a vehicle for psychological flourishing.<\/p>\n The second foundational pillar is rooted in the cognitive models of psychological empowerment articulated by Thomas and Velthouse (1990) and later operationalized by Gretchen Spreitzer (1995). In Spreitzer\u2019s seminal four-dimension model, psychological empowerment comprises:<\/p>\n Hanson and Yuan explicitly isolated the “impact” dimension of empowerment and transplanted it into interpersonal social networks. In doing so, they demonstrated that empowerment is not exclusively vertical (e.g., an employer empowering an employee, or a state empowering a citizen), but can be horizontal and relational. When individuals possess the tools to enrich the lives of their peers, they experience what Hanson and Yuan termed “social empowerment,” driven heavily by this sense of interpersonal impact.<\/p>\n The SPII also aligns seamlessly with the basic psychological needs framework within Self-Determination Theory<\/a> formulated by Edward Deci and Richard Ryan (2000). SDT asserts that human well-being requires the ongoing satisfaction of three fundamental psychological needs: autonomy, competence, and relatedness. The Sense of Positive Interpersonal Impact represents a cognitive sweet spot where all three needs converge:<\/p>\n The psychometric integrity of the Sense of Positive Interpersonal Impact scale has been rigorously established across multiple empirical studies, encompassing laboratory experiments, online panels (e.g., Amazon Mechanical Turk, Prolific), and field surveys involving consumer coupon sharing, social promotions, and interpersonal favor exchange.<\/p>\n Construct validity was initially confirmed by Hanson and Yuan (2018) via comprehensive Confirmatory Factor Analysis (CFA)<\/a>. The six items loaded cleanly onto a single underlying latent construct. All standardized item loadings exceeded the recommended threshold of .70 (with observed loadings spanning .75 to .93), demonstrating that the items represent potent reflections of the latent variable. The average variance extracted (AVE) consistently surpassed .65, satisfying the classical criterion proposed by Fornell and Larcker (1981) that latent constructs should explain more than 50% of the variance in their constituent indicators.<\/p>\n Convergent validity was evaluated by assessing the SPII’s associations with theoretical correlates measuring prosocial orientation, affect, and subjective value:<\/p>\n To establish that the SPII does not merely replicate existing psychometric inventories, Hanson and Yuan conducted rigorous discriminant validity testing using the Fornell-Larcker criterion and cross-construct correlations:<\/p>\n The predictive validity of the SPII is exceptionally robust. Within structural equation models and mediation analyses, the SPII successfully mediated the relationship between social sharing mechanisms and subsequent pro-brand behaviors, including:<\/p>\n Critically, experimental manipulations that constrained or neutralized the perceived benefit received by the partner (e.g., informing the sender that the coupon code was unusable or provided negligible value) caused immediate, statistically significant drops in SPII scores, validating the scale’s acute sensitivity to genuine social efficacy.<\/p>\n The Sense of Positive Interpersonal Impact scale demonstrates exceptional reliability across diverse empirical sampling frames, cultural sub-samples, and study contexts.<\/p>\n Across the experimental studies reported in Hanson and Yuan\u2019s (2018) seminal research program, the scale\u2019s internal consistency coefficients consistently exceeded accepted standards for psychological assessment:<\/p>\n Corrected item-total correlations across all six items consistently exceed .68, with the majority falling between .74 and .86. Deletion of any individual item results in no improvement in the overall Cronbach\u2019s alpha, demonstrating that every item contributes substantially to the underlying construct without introducing psychometric bloat or redundancies.<\/p>\n While the SPII is primarily administered as a state-based evaluative measure following specific interpersonal interactions, longitudinal and test-retest assessments over short intervals (e.g., two-week delays in stable interpersonal dyads) have demonstrated substantial temporal stability (test-retest correlation coefficients r<\/em> > .78), establishing that the instrument captures coherent cognitive assessments rather than transient, erratic mood fluctuations<\/span>.<\/p>\n The factorial validity of the SPII has been thoroughly scrutinized using both Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA).<\/p>\n During initial instrument development, EFA using Maximum Likelihood extraction and Principal Axis Factoring with both orthogonal (Varimax) and oblique (Promax) rotations was conducted on initial item pools. The Kaiser-Meyer-Olkin (KMO) measure of sampling adequacy consistently exceeded .90 (typically .92 to .94), categorizing the data matrix as “marvelous” for factor analytic procedures according to Kaiser\u2019s criteria. Bartlett\u2019s Test of Sphericity was highly significant across all iterations (χ² values yielded p<\/em> < .0001), confirming substantial inter-item correlation<\/span>.<\/p>\n Factor retention criteria\u2014including Kaiser\u2019s eigenvalue-greater-than-one rule and Cattell\u2019s scree plot analysis\u2014unambiguously supported a unidimensional structure. The primary factor routinely accounted for 68% to 76% of the total variance, with the second factor exhibiting an eigenvalue well below 0.60, confirming the absence of secondary dimensions.<\/p>\n Subsequent validation studies subjected the six-item measurement model to CFA utilizing maximum likelihood estimation. Standard structural equation modeling goodness-of-fit benchmarks (Hu & Bentler, 1999) were applied, yielding outstanding fit indices:<\/p>\n Standardized factor loadings (λ) for the six items across multiple empirical tests are summarized below:<\/p>\n2. Keywords<\/h2>\n
3. Authors<\/h2>\n
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4. Purpose<\/h2>\n
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5. Psychological Construct<\/h2>\n
1. Awareness of Benefit Delivery<\/h3>\n
2. Attribution of Positive Causality<\/h3>\n
3. Relational Meaning and Emotional Validation<\/h3>\n
6. Theoretical Framework<\/h2>\n
Prosocial Impact Theory<\/h3>\n
Psychological Empowerment Theory<\/h3>\n
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Self-Determination Theory (SDT)<\/h3>\n
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7. Validity<\/h2>\n
Construct and Factorial Validity<\/h3>\n
Convergent Validity<\/h3>\n
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Discriminant Validity<\/h3>\n
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Predictive and Nomological Validity<\/h3>\n
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8. Reliability<\/h2>\n
Internal Consistency<\/h3>\n
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Item-Total Correlations and Stability<\/h3>\n
9. Factor Analysis<\/h2>\n
Exploratory Factor Analysis (EFA)<\/h3>\n
Confirmatory Factor Analysis (CFA)<\/h3>\n
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