Wisdom Index Scale (JTWI)

Abstract

The Jeste-Thomas Wisdom Index (JTWI), also psychometrically established as the 28-item San Diego Wisdom Scale (SD-WISE-28), is an empirically grounded, neurobiologically informed self-report psychometric instrument designed to measure wisdom as a multifaceted personality trait. Originating from research led by Dilip V. Jeste and colleagues at the University of California San Diego, the scale operationalizes wisdom through seven scientifically validated dimensions: pro-social behaviors (empathy and compassion), emotional regulation, self-reflection, acceptance of diverse perspectives (value relativism), decisive action, social advising, and spirituality. Consisting of 28 items rated on a 5-point Likert scale ranging from Strongly disagree (1) to Strongly agree (5), the JTWI provides a standardized total wisdom score as well as profile scores across its constituent domains. Psychometric evaluations across diverse community cohorts—including landmark investigations across 1,786 adults aged 20 to 82 years—demonstrate strong internal consistency (overall Cronbach’s α = .74–.86; subscale alphas ranging from .65 to .83), robust test-retest reliability across 4- to 8-week intervals (intraclass correlation coefficients ≥ .75), and invariant factor structures validated via exploratory and confirmatory factor analyses (RMSEA ≤ .045, CFI ≥ .94, TLI ≥ .93). Construct validity is evidenced by significant positive correlations with subjective well-being, life satisfaction, resilience, optimism, and positive affect, alongside strong inverse relationships with loneliness, depression, anxiety, and perceived stress. The JTWI bridges historical philosophical inquiries and contemporary cognitive neuroscience, offering researchers and clinicians an efficient, structurally valid tool for assessing wisdom and tracking psychosocial interventions across the adult lifespan.

Keywords

Wisdom Index Scale, JTWI, San Diego Wisdom Scale, SD-WISE-28, Dilip V. Jeste, psychometrics, pro-social behavior, emotional regulation, spirituality, successful aging

Authors

The Jeste-Thomas Wisdom Index (JTWI) / San Diego Wisdom Scale (SD-WISE) was conceptualized, developed, and empirically validated by an interdisciplinary consortium of neuropsychiatrists, psychometricians, and behavioral scientists at the Department of Psychiatry, University of California San Diego (UCSD), and the Sam and Rose Stein Institute for Research on Aging.

• Dilip V. Jeste, M.D. — Former Senior Associate Dean for Healthy Aging and Senior Care, Distinguished Professor of Psychiatry and Neurosciences, and Director of the Stein Institute for Research on Aging at UCSD School of Medicine. Correspondence: University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.
• Michael L. Thomas, Ph.D. — Department of Psychology, Colorado State University, Fort Collins, CO; formerly Department of Psychiatry, University of California San Diego.
• Ellen E. Lee, M.D. — Associate Professor of Psychiatry, University of California San Diego, and Staff Psychiatrist at Veterans Affairs San Diego Healthcare System.
• Barton W. Palmer, Ph.D. — Professor of Psychiatry, University of California San Diego, and Director of the Mental Illness Research, Education and Clinical Center (MIRECC), VA San Diego Healthcare System.
• Emily B. H. Treichler, Ph.D. — Assistant Clinical Professor of Psychiatry, University of California San Diego, and Research Health Scientist at the VA San Diego Healthcare System.
• Colin A. Depp, Ph.D. — Professor of Psychiatry, University of California San Diego, and Director of Research, VA San Diego Healthcare System.

Purpose

Historically, wisdom was predominantly relegated to the realms of philosophical discourse, cultural theology, and speculative humanities. The primary purpose of the Jeste-Thomas Wisdom Index (JTWI) is to operationalize wisdom into a standardized, quantitative, and neurobiologically grounded psychological construct that can be reliably evaluated in clinical practice, public health monitoring, and behavioral science research. Wisdom has emerged as a major psychosocial determinant of health, subjective quality of life, cognitive vitality, and longevity. The creation of the JTWI was driven by the imperative to overcome the psychometric and theoretical limitations of earlier instruments, which frequently lacked grounding in evolutionary biology or cognitive neuroscience, suffered from prohibitive item lengths, or exhibited unstable subscale structures across heterogeneous demographic cohorts.

In clinical and psychiatric contexts, the JTWI serves as a diagnostic and evaluative tool for identifying specific psychosocial resiliencies and deficits. For example, higher aggregate scores on the JTWI are known to buffer against the systemic morbidity of social isolation and existential distress. In an era marked by an unprecedented epidemic of chronic loneliness and affective disorders across both younger populations and older adults, measuring wisdom provides clinicians with actionable targets for therapeutic intervention. Psychotherapeutic modalities—such as Compassion-Focused Therapy (CFT), Acceptance and Commitment Therapy (ACT), and Mindfulness-Based Cognitive Therapy (MBCT)—directly intersect with the components quantified by the scale, including emotional regulation, value relativism, and pro-social empathy. Administering the JTWI enables mental health practitioners to monitor patient growth across distinct wisdom dimensions over the course of rehabilitative treatment.

In research contexts, the scale provides a validated instrument for testing neurobiological and epidemiological hypotheses. Structural and functional neuroimaging studies utilize the JTWI to examine the cortical and subcortical substrates of complex decision-making, investigating the functional connectivity between the prefrontal cortex (PFC) and the limbic system. Moreover, the tool facilitates longitudinal investigations into how specific wisdom domains evolve across the lifespan, whether wisdom can be systematically cultivated through behavioral interventions, and how individual differences in wisdom modify neuroendocrine, cardiovascular, and immunological biomarkers of chronic stress.

Psychological Construct

The psychological construct measured by the Jeste-Thomas Wisdom Index represents wisdom as an integrated, multi-component trait composed of distinct yet synergistic cognitive, affective, behavioral, and existential capacities. Drawing from a Delphi consensus study of international wisdom experts and subsequent empirical factor validations, the instrument captures seven interrelated domains:

1. Pro-Social Behaviors (Empathy and Compassion)

This subscale captures altruism, empathetic concern, perspective taking, and a genuine drive toward the common good. Pro-social behaviors reflect the evolutionary imperative for human cooperation, in-group cohesion, and altruistic punishment. Individuals scoring high in this domain instinctively recognize the emotional states of others (e.g., Item 1: “I am good at perceiving how others are feeling”), actively resist selfish isolation in times of collective distress, and adhere strictly to reciprocal ethical norms such as the Golden Rule (e.g., Item 20: “I treat others the way I would like to be treated” and Item 14: “I would stop a stranger who dropped a twenty-dollar bill to return it”).

2. Emotional Regulation

Emotional regulation denotes the capacity to balance emotional arousal, suppress disruptive or maladaptive impulses, and maintain mental equilibrium amid acute or chronic stressors. Rooted in prefrontal top-down inhibition of amygdalar reactivity, this component reflects self-control, poise, and psychological resilience. High scorers remain calm under severe duress (Item 10: “I remain calm under pressure”), recover rapidly from negative affective states (Item 17: “I am able to recover well from emotional stress”), and prevent negative affect from distorting rational cognitive operations (Item 6: “I have trouble thinking clearly when I am upset”, reverse-scored; Item 27: “I cannot filter my negative emotions”, reverse-scored).

3. Self-Reflection

Self-reflection embodies the capacity for rigorous introspective scrutiny, meta-cognition, insight into one’s own motivations, and candid acknowledgment of personal limitations and biases. Rather than engaging in defensive self-justification, wise individuals continuously interrogate their own cognitive and emotional processes (Item 13: “I take time to reflect on my thoughts”; Item 21: “It is important that I understand the reasons for my actions”). Deficits in this domain manifest as an avoidance of internal examination and an uncritical acceptance of one’s initial assumptions (Item 18: “I avoid self-reflection”, reverse-scored; Item 25: “I don’t analyze my own behavior”, reverse-scored).

4. Acceptance of Diverse Perspectives (Value Relativism)

This domain captures an openness to alternative cultural narratives, behavioral norms, and worldview paradigms, recognizing that one’s personal values are context-dependent and not universally normative. Wise individuals exhibit high tolerance for ideological divergence and approach unfamiliar cultural patterns with intellectual humility and curiosity rather than defensive ethnocentrism (Item 11: “I enjoy learning things about other cultures”; Item 16: “I am okay with others having morals and values other than my own”; Item 24: “I enjoy being exposed to diverse viewpoints”).

5. Decisive Action

Decisiveness in the context of wisdom involves the ability to make timely, pragmatic, and definitive choices despite inherent ambiguity, incomplete information, and competing outcomes. Unlike reckless impulsivity, decisive action balances deliberative prudence with the pragmatic recognition that paralysis by analysis leads to suboptimal outcomes. High scorers make timely choices (Item 9: “I usually make decisions in a timely fashion”) and avoid chronic procrastination or delegating agency to others when confronted with uncertainty (Item 2: “I have trouble making decisions”, reverse-scored; Item 12: “I tend to postpone making major decisions as long as I can”, reverse-scored; Item 19: “I would rather someone else make the decision for me if I am uncertain”, reverse-scored).

6. Social Advising

Wisdom is intrinsically interpersonal and communal; it is not merely possessed in isolation but sought out and utilized by the broader social network. The social advising domain evaluates an individual’s perceived competence and history as a mentor, counselor, and arbiter for others facing complex life dilemmas (Item 4: “Others look to me to help them make choices”; Item 8: “Others say I give good advice”). Low capacity in this dimension is marked by feelings of helplessness or relational ineptitude when friends or peers seek counsel (Item 26: “I often don’t know what to tell people when they come to me for advice”, reverse-scored).

7. Spirituality

Refined in the expanded 28-item JTWI/SD-WISE model (Jeste et al., 2021), spirituality assesses a felt connection to something transcendent or larger than the solitary self, whether conceptualized through religious faith, philosophical oneness, nature, or a profound sense of universal purpose (Item 15: “My spiritual belief gives me inner strength”; Item 22: “I feel that we are all connected on a higher level”). This dimension reflects existential cohesion and anchors the individual against nihilism (Item 28: “There is no overall purpose to life”, reverse-scored; Item 7: “There is no existence of the soul after death”, reverse-scored).

Theoretical Framework

The theoretical framework underpinning the Jeste-Thomas Wisdom Index synthesizes two foundational pillars: evolutionary psychiatry and cognitive neuropsychiatry. Rather than treating wisdom as an abstract, mystical ideal, Jeste and colleagues conceptualize wisdom as an evolutionarily adaptive phenotypic trait that confers profound survival and reproductive advantages at both individual and group levels.

Evolutionary Biology and the “Grandmother Hypothesis”

From an evolutionary perspective, human life history is unique among primates due to the prolonged post-reproductive lifespan observed primarily in females (and to an extent in males). The evolutionary paradigm known as the Grandmother Hypothesis posits that longevity beyond reproductive cessation was selected for because older adults contributed substantially to the fitness, survival, and resource allocation of their kin. Wisdom represents the behavioral and psychological mechanism that facilitated this fitness transfer. Older, wiser individuals provided non-reproductive labor, resolved high-stakes social conflicts, modulated collective group emotional states during crises, and transferred accumulated cultural knowledge across generations. The JTWI reflects these evolutionary functions directly through its pro-social, advising, emotional regulation, and decisive action components.

The Neurobiological Model of Wisdom

The foundational neurobiological model proposed by Jeste and colleagues maps each psychological component of the JTWI onto discrete, interacting neuroanatomical circuits. This neurocircuitry centers on the dynamic reciprocal balance between phylogenetically newer cortical structures and older subcortical/limbic networks:

• Dorsolateral Prefrontal Cortex (dlPFC): Supports decisive action, goal-directed calculation, meta-cognitive self-reflection, and cognitive control over impulses.
• Ventromedial Prefrontal Cortex (vmPFC) and Anterior Cingulate Cortex (ACC): Subserve emotional regulation, value assessment, moral conflict resolution, and the balancing of subjective reward versus societal risk.
• Limbic System (Amygdala and Ventral Striatum): Originates rapid affective responses and hedonic drives, which are modulated and regulated by prefrontal projections.
• Insula and Mirror Neuron System: Underpin empathy, interpersonal attunement, social cognition, and the visceral somatic markers that inform pro-social decision-making.
• Default Mode Network (DMN): Engaged during deep self-reflection, theory of mind operations, autobiographical memory integration, and existential/spiritual contemplation.

By rooting the measurement tool in these documented brain circuits, the JTWI provides a framework where psychological variation corresponds directly with identifiable neurobiological pathways, moving wisdom assessment from speculative philosophy into modern neuroscience.

Validity

The psychometric validity of the Jeste-Thomas Wisdom Index (SD-WISE-28) has been extensively corroborated across diverse demographic cohorts, ranging from young adults to oldest-old community dwellers.

Construct and Structural Validity

Construct validity was established through rigorous exploratory and confirmatory factor modeling across multiple cross-sectional and longitudinal cohorts. In the definitive validation study involving 1,786 community-dwelling adults aged 20 to 82 years (Jeste et al., 2021), structural equation modeling demonstrated that a 7-factor hierarchical model exhibited superior fit indices compared to single-factor or unconstrained multidimensional models. The root mean square error of approximation (RMSEA) fell consistently below .05 (observed RMSEA = .041, 90% CI [.038, .044]), while incremental fit indices met strict thresholds for model adequacy (CFI = .948, TLI = .941, SRMR = .042).

Convergent Validity

Convergent validity has been evaluated by correlating JTWI total and subscale scores with validated metrics of psychological well-being, resilience, and flourishing:

• Resilience: JTWI total scores correlate strongly and positively with the Connor-Davidson Resilience Scale (CD-RISC; r = .62, p < .001).
• Subjective Well-Being: Highly significant positive correlations are observed with the Satisfaction with Life Scale (SWLS; r = .54, p < .001) and the Mental Health Continuum-Short Form (MHC-SF; r = .58, p < .001).
• Alternative Wisdom Scales: The JTWI demonstrates robust convergent validity against earlier measures, including the Three-Dimensional Wisdom Scale (3D-WS; r = .68, p < .001) and the Brief Wisdom Screening Scale (BWSS; r = .64, p < .001), while displaying superior factor stability and lower cross-loadings.

Discriminant and Predictive Validity

Discriminant validity is supported by powerful negative associations with psychological morbidity and distress:

• Loneliness: JTWI exhibits marked inverse correlations with the UCLA Loneliness Scale (Version 3; r = -.52 to -.61, p < .001). Individuals possessing elevated wisdom scores are substantially protected against subjective social isolation.
• Depressive Symptoms: In community samples, JTWI scores negatively predict scores on the Center for Epidemiologic Studies Depression Scale (CES-D) and the Patient Health Questionnaire (PHQ-9; r = -.48, p < .001).
• Perceived Stress and Anxiety: Inverse correlations emerge with the Perceived Stress Scale (PSS-10; r = -.45, p < .001) and the Generalized Anxiety Disorder 7-item scale (GAD-7; r = -.41, p < .001).
• Biological Markers: In clinical substudies, higher JTWI scores were predictive of reduced levels of systemic inflammatory biomarkers (including high-sensitivity C-reactive protein and interleukin-6) and greater gut microbiome alpha-diversity, demonstrating real-world physiological discriminant predictive power.

Reliability

The Jeste-Thomas Wisdom Index exhibits excellent reliability parameters across internal consistency, split-half metrics, and temporal stability evaluations.

Internal Consistency

Across validation studies spanning adult populations (Jeste et al., 2020a, 2021; Thomas et al., 2019), the overall Cronbach’s alpha (α) for the full 28-item scale ranges reliably between .74 and .86, indicating high internal homogeneity without redundant item content. McDonald’s omega (ω_total), which does not assume tau-equivalence, yields comparable values (ω = .85–.88). Subscale internal consistencies are documented as follows:

• Pro-social Behaviors: α = .72 – .78
• Emotional Regulation: α = .74 – .81
• Self-Reflection: α = .71 – .77
• Acceptance of Diverse Perspectives: α = .68 – .74
• Decisive Action: α = .75 – .82
• Social Advising: α = .73 – .79
• Spirituality: α = .78 – .83

Test-Retest Stability

Temporal stability was established by re-administering the instrument across independent non-clinical community cohorts at intervals of 4 weeks and 8 weeks. The test-retest reliability coefficient for the aggregate JTWI score demonstrated high stability over time, with intraclass correlation coefficients (ICC) ranging from .78 to .84 (95% CI [.72, .89]). Individual subscales yielded ICC values between .69 (Acceptance of Diverse Perspectives) and .82 (Spirituality), confirming that the JTWI measures enduring dispositional traits rather than transient mood states.

Factor Analysis

The structural composition of the JTWI was established through extensive psychometric scale development phases comprising exploratory factor analysis (EFA) followed by confirmatory factor analysis (CFA) across stratified split-half samples.

Exploratory Factor Analysis (EFA)

Initial scale derivation involved an expansive item pool administered to adult cohorts. Principal axis factoring with Promax (oblique) rotation was conducted due to the theoretical expectation that wisdom sub-dimensions correlate positively with one another. Eigenvalues and scree plot inspection clearly identified primary factors corresponding to the hypothesized domains. Items displaying low primary factor loadings (< .40) or high cross-loadings (> .30 on secondary factors) were systematically eliminated. In the preliminary 24-item version (SD-WISE-24), six core factors were retained, which were later expanded to seven factors with the introduction of four targeted spirituality items in the SD-WISE-28 / JTWI.

Confirmatory Factor Analysis (CFA)

Confirmatory factor analyses performed on large confirmatory datasets (N = 1,786) rigorously evaluated multiple alternative structural models:

1. Single-Factor Model: Presumed all 28 items loaded on a solitary undifferentiated wisdom factor. This model exhibited poor fit: χ²(350) = 4218.42, RMSEA = .089, CFI = .682, TLI = .656.
2. Seven Uncorrelated Factors Model: Orthogonal model assuming completely independent sub-dimensions. Fit was unacceptable: χ²(350) = 2894.11, RMSEA = .071, CFI = .791, TLI = .774.
3. Seven Correlated Factors Model: Allowed covariance among the seven latent traits. Fit indices improved dramatically: χ²(329) = 1318.56, RMSEA = .043, CFI = .944, TLI = .936, SRMR = .041.
4. Hierarchical / Bi-Factor Model: Posited a global latent wisdom factor alongside seven orthogonal group factors. This model displayed superior psychometric fit: χ²(322) = 1184.23, p < .001, RMSEA = .041 (90% CI [.038, .044]), CFI = .952, TLI = .944, SRMR = .038.

Standardized factor loadings for the retained 28 items ranged from .48 to .82 across all subscales, with all parameters statistically significant at p < .001, verifying that the empirical architecture maps cleanly onto the theoretical 7-domain paradigm.

Instrument / Measurement Tool

• Test Name: Jeste-Thomas Wisdom Index (JTWI) / San Diego Wisdom Scale (SD-WISE-28)
• Primary Author: Dilip V. Jeste, M.D.
• Construct Assessed: Multidimensional Wisdom Trait
• Target Population: Adults aged 18 years and older (normed across ages 20–82+)
• Administration Format: Self-report paper-and-pencil or digital/computerized survey
• Completion Time: Approximately 5 to 8 minutes
• Number of Items: 28 items
• Response Scale: 5-point Likert scale:
  • 1 = Strongly disagree
  • 2 = Disagree
  • 3 = Neutral
  • 4 = Agree
  • 5 = Strongly agree
• Subscales (4 items each):
  • Pro-Social Behaviors: Items 1, 5 (R), 14, 20
  • Emotional Regulation: Items 6 (R), 10, 17, 27 (R)
  • Self-Reflection: Items 13, 18 (R), 21, 25 (R)
  • Acceptance of Diverse Perspectives: Items 11, 16, 23, 24
  • Decisive Action: Items 2 (R), 9, 12 (R), 19 (R)
  • Social Advising: Items 3 (R), 4, 8, 26 (R)
  • Spirituality: Items 7 (R), 15, 22, 28 (R)
• Scoring Protocol:
  • Reverse Scoring: Eleven items are negatively keyed and must be inverted prior to aggregation (i.e., 1 → 5, 2 → 4, 3 → 3, 4 → 2, 5 → 1). Reverse-scored items are: 2, 3, 5, 6, 7, 12, 18, 19, 25, 26, 27, and 28.
  • Subscale Scores: Calculated by summing or averaging the 4 items within each respective domain (subscale score range: 4 to 20 for sums, or 1.0 to 5.0 for means).
  • Total Score: Calculated by summing all 28 recoded items (total sum range: 28 to 140) or computing the overall mean (range: 1.0 to 5.0). Higher scores reflect greater levels of multidimensional wisdom.

Permissions & Fee and Test Year

The Jeste-Thomas Wisdom Index (JTWI), initially published in its 24-item form in 2017/2019 and expanded into the definitive 28-item model (incorporating spirituality) in 2020/2021, is an open-access psychometric instrument available free of charge for non-commercial academic, clinical, and scientific research purposes. Dilip V. Jeste and the University of California San Diego hold copyright over the instrument but encourage its widespread scholarly dissemination and clinical utilization. Researchers intending to administer the scale in formal investigations or translate the instrument into other languages are expected to properly cite the foundational peer-reviewed validation papers (Jeste et al., 2020a, 2021; Thomas et al., 2019). Commercial entities seeking to integrate the JTWI into proprietary corporate platforms, for-profit assessment suites, or commercial wellness technologies must contact the UC San Diego Office of Innovation and Commercialization to obtain formal licensing authorization.

References

• Jeste, D. V., & Vahia, I. V. (2008). Comparison of the conceptualization of wisdom in ancient Indian literature with modern views: Focus on the Bhagavad Gita. Psychiatry: Interpersonal and Biological Processes, 71(3), 197–209. https://doi.org/10.1521/psyc.2008.71.3.197
• Thomas, M. L., Bangen, K. J., Palmer, B. W., Martin, A. S., Avanzino, J. A., Depp, C. A., Glorioso, D., Daly, R. E., & Jeste, D. V. (2019). A new scale for assessing wisdom based on common domains and a neurobiological model: The San Diego Wisdom Scale (SD-WISE). Journal of Psychiatric Research, 108, 40–47. https://doi.org/10.1016/j.jpsychires.2017.09.005
• Jeste, D. V., Lee, E. E., Palmer, B. W., & Treichler, E. B. H. (2020a). Moving from humanities to sciences: A new model of wisdom fortified by sciences of neurobiology, medicine, and evolution. Psychological Inquiry, 31(2), 134–143. https://doi.org/10.1080/1047840X.2020.1757984
• Jeste, D. V., Lee, E. E., Cacioppo, S., Cacioppo, J. T., Hurwitz, O., Avanzino, J. A., & Palmer, B. W. (2020b). Study of loneliness and wisdom in 482 middle-aged and oldest-old adults: A comparison between people in Cilento, Italy and San Diego, USA. Aging & Mental Health, 25(11), 2149–2159. https://doi.org/10.1080/13607863.2020.1821170
• Jeste, D. V., Thomas, M. L., Liu, J., Daly, R. E., Tu, X. M., Lee, E. E., & Palmer, B. W. (2021). Is spirituality a component of wisdom? Study of 1,786 adults using expanded San Diego Wisdom Scale (Jeste-Thomas Wisdom Index). Journal of Psychiatric Research, 132, 174–181. https://doi.org/10.1016/j.jpsychires.2020.09.033

13. Items of the Scale (Questionnaire)