Nurse Psychological Capital Scale

1. Abstract

The Nurse Psychological Capital Scale (NPCS) is a specialized, culturally attuned psychometric instrument designed to evaluate the positive psychological resources of registered nurses within collectivist healthcare environments, specifically developed and validated in mainland China. While foundational psychological capital (PsyCap) theory—predominantly conceptualized through Western paradigms—defines these resources through the four individualistic dimensions of hope, efficacy, resilience, and optimism (the HERO model), the NPCS introduces an indigenous, context-specific reconfiguration. Developed by Xiangyu Lu, Lina Wang, Guifang Xu, Haixia Teng, Jing Li, and Yufang Guo in 2023, the scale acknowledges that the psychological strength of nursing personnel operating in high-demand hospital settings is inextricably linked to cultural values, interpersonal networks, moral responsibilities, and systemic workplace realities.

Comprising 43 items, the NPCS is structured across three primary dimensions: work task-oriented psychological capital, interpersonal relationship-oriented psychological capital, and learning development-oriented psychological capital. Psychometric validation was conducted on a sample of 619 registered nurses across tertiary hospitals in Hebei Province, China. The instrument demonstrated exceptional internal consistency reliability, yielding an overall Cronbach’s alpha of 0.975 (reported at 0.98 in summary profiles) and composite reliability (CR) coefficients exceeding 0.95 across all dimensions. Exploratory factor analysis (EFA) demonstrated a three-factor solution explaining 68.71% of the cumulative variance, with factor loadings ranging from 0.460 to 1.029. Confirmatory factor analysis (CFA) substantiated structural validity, evidencing a root mean square error of approximation (RMSEA) of 0.078, a chi-square to degrees of freedom ratio (χ²/df) of 2.839, a root mean square residual (RMR) of 0.041, a comparative fit index (CFI) of 0.871, and a Tucker-Lewis index (TLI) of 0.863. Criterion-related validity was confirmed via a statistically significant positive correlation with the Chinese version of the Utrecht Work Engagement Scale (r = 0.579, p < 0.001). Content validity indices were exceptional, with item-level CVI (I-CVI) ranging from 0.830 to 1.000 and an overall scale-level CVI (S-CVI/Ave) of 0.988. The NPCS bridges a critical psychometric gap, providing healthcare leaders, clinical nurse specialists, and organizational psychologists with an ecologically valid tool to assess nurse mental health, mitigate occupational burnout, and foster humanistic care environments.

2. Keywords

Psychological Capital, Nurse Psychological Capital Scale, Nursing Assessment, Cross-cultural Psychometrics, Occupational Well-being, Job Demands-Resources Model, Burnout Prevention, Work Engagement, Chinese Nursing Workforce, Positive Organizational Behavior

3. Authors

The Nurse Psychological Capital Scale was formulated, evaluated, and standardized by a multidisciplinary research consortium of nursing scholars and psychometricians:

• Xiangyu Lu: School of Nursing, Hebei University, Baoding, Hebei Province, China. Primary investigator focused on scale design, item generation, and qualitative psychometric interviews.
• Lina Wang: Department of Nursing, Affiliated Hospital of Hebei University, Baoding, Hebei Province, China. Contributed to clinical sample recruitment, field administration, and descriptive statistical analyses.
• Guifang Xu: School of Nursing, Hebei University, Baoding, Hebei Province, China. Contributed to theoretical mapping, literature review, and psychometric refinement.
• Haixia Teng: Department of Nursing, Affiliated Hospital of Hebei University, Baoding, Hebei Province, China. Overseer of clinical data curation and validation logistics across tertiary medical care centers.
• Jing Li: School of Nursing, Hebei University, Baoding, Hebei Province, China. Methodologist specialized in multivariate factor analysis, convergent validity diagnostics, and measurement invariance evaluation.
• Yufang Guo (Corresponding Author): Professor and Lead Researcher, School of Nursing, Hebei University, Baoding, Hebei Province, China. Corresponding Email: [email protected]. Principal architect of the overarching research grant, theoretical conceptualization, and psychometric governance.

4. Purpose

The overarching objective of the Nurse Psychological Capital Scale is to rectify the systematic conceptual and empirical limitations inherent in applying generic, Western-developed psychological capital instruments to non-Western nursing workforces. Historically, the measurement of psychological capital has been dominated by the Psychological Capital Questionnaire (PCQ-24), developed by Fred Luthans and colleagues. Although the PCQ-24 has demonstrated utility across corporate and Anglo-Western settings, its foundational assumptions are anchored in individualistic psychological theories that conceptualize an individual’s positive capacities as autonomous, internal resources independent of immediate social collectives, moral mandates, and cultural philosophies.

When exported uncritically into East Asian healthcare contexts—particularly within mainland China—standardized scales fail to capture the cultural realities governing professional behavior. In Chinese society, individual functioning is profoundly shaped by collectivist social frameworks, relational harmony (guanxi), Confucian ethics of humaneness (Ren), and Taoist cognitive flexibility emphasizing natural harmony and adaptation (Wu Wei). Within nursing, these cultural values merge with intense emotional labor, high patient-to-nurse ratios, structural hierarchies, and the constant imperative for humanistic care. Generic instruments overlook how a nurse’s psychological fortitude is constructed through communal camaraderie, peer support, compassionate clinical interactions, and dedicated continuous learning.

The NPCS addresses these clinical and empirical needs by providing an assessment system specifically designed for hospital operations. From a clinical perspective, the scale enables hospital administrators, nurse directors, and occupational health specialists to identify nursing personnel exhibiting depleted psychological reserves, thereby allowing preemptive intervention before psychological distress escalates into clinical depression, severe compassion fatigue, or turnover intentions. In research environments, the NPCS serves as a targeted outcome measure for intervention studies—such as mindfulness-based stress reduction, cognitive behavioral resilience training, and preceptorship initiatives—while functioning as an explanatory mechanism within the Job Demands-Resources (JD-R) paradigm and Conservation of Resources (COR) theory.

5. Psychological Construct

The Nurse Psychological Capital Scale conceptualizes psychological capital not as an isolated cluster of generic cognitive states, but as a tripartite, dynamic resource pool tailored to the sociocultural and operational demands of healthcare environments. The construct comprises three core dimensions:

1. Work Task-Oriented Psychological Capital

This dimension encompasses an individual nurse’s internal psychological resilience, task-specific confidence, emotional steadiness, and proactive problem-solving capacities directed toward clinical nursing obligations. It captures how nurses maintain psychological composure when confronted with high-acuity medical emergencies, unexpected deterioration of patient conditions, stringent performance standards, and shift-work fatigue. Rather than reflecting abstract generalized self-efficacy, this subscale taps into the specialized clinical confidence necessary to execute high-stakes nursing interventions, manage unpredictable clinical workloads, and rebound swiftly from professional errors or adverse clinical incidents.

Illustrative theoretical focus: The capacity to maintain operational clarity during resuscitation, psychological stamina during prolonged surgical assistance or intensive care monitoring, and personal optimism regarding patient therapeutic outcomes despite challenging medical prognoses.

2. Interpersonal Relationship-Oriented Psychological Capital

Directly reflecting the collectivist framework and the philosophical heritage of Confucian benevolence (Ren) and relational harmony (Hexie), this dimension evaluates the psychological strengths derived from and invested into professional relationships. In modern clinical environments, a nurse does not function as an isolated practitioner; clinical efficacy relies on complex multidisciplinary coordination involving physicians, allied healthcare providers, auxiliary staff, patients, and anxious family members. This dimension measures empathetic communication, mutual emotional support, collective altruism, conflict de-escalation skills, and humanistic care.

Illustrative theoretical focus: The capacity to demonstrate genuine empathy and emotional soothing toward distressed patients, de-escalate volatile nurse-patient interactions, cultivate cooperative trust within the nursing unit, and experience personal psychological replenishment through team cohesion and mutual collegial support.

3. Learning Development-Oriented Psychological Capital

In response to rapid technological innovations in medical equipment, modern evidence-based nursing guidelines, and ongoing accreditation demands, this dimension evaluates a nurse’s proactive pursuit of knowledge, intellectual curiosity, skill mastery, and psychological adaptability to institutional reform. In traditional Chinese professional ethos, self-cultivation and continuous moral and intellectual refinement are core virtues. This subscale measures a nurse’s internal drive to engage in lifelong professional education, master novel digital health tools, view clinical challenges as pedagogical opportunities, and maintain an adaptable growth mindset amid evolving hospital governance structures.

Illustrative theoretical focus: The motivation to master novel bedside monitoring technologies, active participation in departmental research and quality improvement protocols, resilience when acquiring advanced clinical certifications, and viewing clinical feedback as a constructive pathway toward professional development.

6. Theoretical Framework

The conceptual blueprint of the Nurse Psychological Capital Scale integrates Western positive organizational behavior theories with indigenous Chinese philosophical traditions and established occupational health paradigms.

Positive Organizational Behavior and Traditional PsyCap

The foundational framework originates in positive psychology and Positive Organizational Behavior (POB), pioneered by Fred Luthans, Carolyn M. Youssef, and Bruce J. Avolio. PsyCap is formally defined as an individual’s positive psychological state of development characterized by: (1) having confidence (self-efficacy) to take on and put in the necessary effort to succeed at challenging tasks; (2) making a positive attribution (optimism) about succeeding now and in the future; (3) persevering toward goals and, when necessary, redirecting paths to goals (hope) in order to succeed; and (4) when beset by problems and adversity, sustaining and bouncing back and even beyond (resilience) to attain success. While the NPCS preserves the core state-like, developable nature of these resources, it rejects the presupposition that they must be organized along these four Western individualistic axes.

Collectivist Philosophy, Confucianism, and Taoism

The theoretical necessity for the NPCS stems from cross-cultural organizational psychology. Cross-cultural theorists such as Daphna Oyserman have illustrated that collectivist societies emphasize interdependence, shared duties, and social embeddedness. In Chinese professional settings, Ke, Sun, and Li (2009) established that indigenous psychological capital manifests through dual trajectories: task-focused and relationship-focused capabilities. Furthermore, traditional Confucian thought identifies humanistic caring, filial respect, and relational benevolence as primary drivers of personal fulfillment and duty. Simultaneously, Taoist philosophy encourages psychological equanimity through mental flexibility, harmony with nature, and peaceful acceptance of operational transitions. By infusing these philosophical perspectives, the NPCS conceptualizes a nurse’s psychological capital as an integrated state uniting operational mastery, social harmony, and lifelong self-cultivation.

Conservation of Resources (COR) and Job Demands-Resources (JD-R) Models

The operational logic of the NPCS is grounded in Stevan Hobfoll’s Conservation of Resources (COR) theory and Arnold Bakker and Evangelia Demerouti’s Job Demands-Resources (JD-R) model. COR theory posits that individuals strive to obtain, retain, protect, and foster valued resources. When confronted with acute environmental stressors—such as high clinical mortality, excessive administrative burdens, and staffing shortages—individuals without adequate personal resource caravans experience progressive psychological depletion, leading directly to burnout. Within the JD-R model, the tripartite dimensions of the NPCS serve as internal personal resources that directly mitigate the negative health-impairment impacts of structural demands while reinforcing the motivational process that fosters work engagement, professional commitment, and high-quality nursing care.

7. Validity

The psychometric validation of the Nurse Psychological Capital Scale adhered to rigorous empirical protocols, establishing strong evidence across multiple validity domains:

Content Validity

Item formulation began with exploratory qualitative phenomenological interviews conducted with frontline clinical nurses to delineate indigenous resource manifestations, followed by an exhaustive review of extant literature. An initial pool of items was scrutinized by a multidisciplinary panel of clinical nursing specialists, nurse educators, and psychometric researchers. Content validity was quantitatively evaluated utilizing the Content Validity Index (CVI). The Item-Level Content Validity Index (I-CVI) across the final 43 items ranged from 0.830 to 1.000, surpassing the conservative scientific cutoff of 0.780 suggested by Polit and Beck. The overall Scale-Level Content Validity Index Average (S-CVI/Ave) achieved an exceptional 0.988, confirming that the instrument accurately captures the conceptual scope of nursing psychological capital without extraneous variance.

Construct, Convergent, and Discriminant Validity

Construct validity was validated through rigorous structural equation modeling and variance extraction indices:

• Composite Reliability (CR): The composite reliability coefficients for all three dimensions exceeded the recommended 0.70 threshold, each scoring above 0.95, indicating high internal latent construct integrity.
• Average Variance Extracted (AVE): Convergent validity was evidenced by the AVE parameters. The interpersonal relationship-oriented dimension yielded an AVE of 0.712, while the learning development-oriented dimension achieved an AVE of 0.758, both exceeding the standard 0.50 benchmark. The work task-oriented dimension registered an AVE of 0.471. While slightly below the conventional 0.50 threshold, psychometric methodologists (e.g., Fornell and Larcker, 1981; Bagozzi, 1981) establish that an AVE of approximately 0.40 to 0.50 is fully acceptable if the composite reliability remains above 0.60, as the high CR confirms the latent construct’s convergent adequacy.
• Discriminant Validity: Inter-factor correlation matrices combined with exploratory cross-loading profiles demonstrated that the three dimensions measure related yet empirically distinct facets of psychological functioning, with latent factor correlations remaining distinct from unity.

Criterion-Related Validity

Criterion validity was investigated by benchmarking the NPCS against the validated Chinese version of the Utrecht Work Engagement Scale (UWES). As hypothesized under the JD-R theoretical paradigm, psychological capital serves as a robust personal resource predictor of occupational vigor, dedication, and absorption. Bivariate Pearson correlation analysis revealed a robust, statistically significant positive correlation between the total NPCS score and the overall Work Engagement score (r = 0.579, p < 0.001), corroborating the scale’s empirical and practical utility in forecasting positive workplace outcomes.

8. Reliability

The Nurse Psychological Capital Scale demonstrates exceptional reliability parameters across multiple testing metrics:

Internal Consistency Reliability

The scale exhibited outstanding internal consistency. In the definitive psychometric validation study comprising 619 registered nurses, the global Cronbach’s alpha coefficient for the 43-item scale was recorded at 0.975 (summarized as 0.98 in introductory scorecards). The Cronbach’s alpha values for the three subscales were similarly robust:

• Work Task-Oriented Subscale: α > 0.90, demonstrating strong internal coherence among items assessing clinical composure, task management, and emergency response.
• Interpersonal Relationship-Oriented Subscale: α > 0.92, verifying stability across items measuring team communication, patient empathy, and collaborative harmony.
• Learning Development-Oriented Subscale: α > 0.93, indicating that items assessing professional growth, cognitive flexibility, and continuing education capture the construct reliably.

Psychometric Interpretation of High Reliability Coefficients

While an overall Cronbach’s alpha of 0.975 establishes that the NPCS operates with minimal measurement error variance, psychometricians typically evaluate alphas above 0.95 with critical nuance. Classical test theory suggests that coefficients approaching unity may indicate item redundancy, where multiple items mirror adjacent semantic variations of the same operational feature. However, in newly constructed multidimensional instruments encompassing 43 items across complex clinical domains, elevated internal consistency ensures that the instrument maintains assessment stability across diverse hospital sub-specialties (e.g., intensive care units, emergency departments, inpatient medical-surgical wards). Future longitudinal research is warranted to document test-retest reliability across multi-week intervals and verify temporal stability.

9. Factor Analysis

The internal structural architecture of the NPCS was established through an split-sample cross-validation design, dividing the 619 participants into two randomized subsets: Sample 1 (n = 319) for Exploratory Factor Analysis (EFA) and Sample 2 (n = 300) for Confirmatory Factor Analysis (CFA).

Exploratory Factor Analysis (EFA)

Prior to factor extraction, data adequacy was evaluated. The Kaiser-Meyer-Olkin (KMO) measure of sampling adequacy yielded an outstanding score, and Bartlett’s Test of Sphericity reached statistical significance (p < 0.001), confirming matrix factorability. Principal Component Analysis with Varimax orthogonal rotation revealed a distinct three-factor structure with eigenvalues greater than 1.0. Cumulatively, these three factors accounted for 68.71% of the total variance across the 43 items, substantially exceeding the conventional 50% threshold for acceptable social science models. Individual rotated item factor loadings were strong, ranging from 0.460 to 1.029, with each item demonstrating primary loading on its theoretically assigned construct without problematic cross-loadings.

Confirmatory Factor Analysis (CFA)

To evaluate whether the empirical data confirmed this three-dimensional model, a structural equation CFA was performed on Sample 2 (n = 300). The maximum likelihood estimation demonstrated acceptable structural fit:

• Chi-Square / Degrees of Freedom (χ²/df): The model yielded a value of 2.839, falling well within the acceptable psychometric boundary of < 3.00, indicating an adequate balance between theoretical complexity and empirical data representation.
• Root Mean Square Error of Approximation (RMSEA): The RMSEA was 0.078 (90% CI [0.074, 0.082]), meeting the recognized standard of < 0.08 for acceptable fit.
• Root Mean Square Residual (RMR): Recorded at 0.041, satisfying the strict threshold of < 0.05.
• Comparative Fit Index (CFI) and Tucker-Lewis Index (TLI): The CFI was computed at 0.871 and the TLI at 0.863. While slightly below the conventional 0.90 cutoff recommended for ideal fit in tightly constrained experimental studies, these values are considered acceptable for exploratory, comprehensive 43-item instruments measuring complex psychological dynamics in real-world clinical environments.

10. Instrument / Measurement Tool

The Nurse Psychological Capital Scale is standardized as a multidimensional, self-administered psychometric assessment tool:

• Test Type: Self-report questionnaire / Psychometric rating scale.
• Target Population: Clinical healthcare professionals, registered nurses, nurse managers, and nursing students in clinical residency.
• Age Demographics: Adult nursing personnel (validated on professionals aged 20 to 55+ years).
• Item Inventory: 43 items.
• Dimensional Structure: Three subscales:
  • Subscale 1: Work task-oriented psychological capital (evaluating clinical stamina, crisis management, task confidence, and emergency resilience).
  • Subscale 2: Interpersonal relationship-oriented psychological capital (evaluating nurse-patient communication, teamwork harmony, empathy, and collective care).
  • Subscale 3: Learning development-oriented psychological capital (evaluating continuous professional education, digital adaptation, and skill development).
• Response Format: Structured Likert-type rating format allowing respondents to quantify their level of agreement with each operational statement.
• Administration Modality: Available in paper-and-pencil formats and secure digital/online survey engines.
• Completion Duration: Approximately 10 to 15 minutes.
• Scoring Methodology: Subscale scores are derived by calculating the sum or mean of the items within each respective dimension. A total global Psychological Capital score is computed by aggregating all 43 items. Higher aggregate scores indicate greater levels of psychological capital, resilience, and occupational resources.

11. Permissions & Fee and Test Year

The Nurse Psychological Capital Scale was formally developed and published in 2023 by the research team led by Xiangyu Lu and Yufang Guo at Hebei University. The foundational validation paper was released open-access in BMC Nursing:

• Publication Year: 2023.
• Original Source Publication: Lu, X., Wang, L., Xu, G., Teng, H., Li, J., & Guo, Y. (2023). Nurse Psychological Capital Scale. BMC Nursing. DOI: 10.1186/s12912-022-01148-x.
• Licensing and Academic Use: While the foundational validation study is distributed under an open-access Creative Commons framework, the complete item-level operational inventory is copyrighted by the original research team.
• Access and Permissions: The individual scale items are not released into the public domain. Researchers, clinical organizations, and healthcare institutions seeking to utilize, translate, or adapt the NPCS for academic investigation or institutional assessment must obtain formal permission from the corresponding author, Professor Yufang Guo, via email at: [email protected].
• Fee Structure: Typically made available free of charge for non-commercial academic research upon written request and submission of a research protocol, though formal authorization remains mandatory.

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13. Items of the Scale