Patient Competency Rating Scale

1. Abstract

The Patient Competency Rating Scale (PCRS), originally developed by George P. Prigatano and colleagues in 1986, is a cornerstone neurobehavioral and neuropsychological instrument specifically engineered to evaluate impaired self-awareness (anosognosia) and perceived functional competency in individuals recovering from traumatic brain injury (TBI), stroke, and related acquired neurocognitive conditions. The scale comprises 30 self-referential items administered across parallel formats: a patient self-report version (PCRS-P), a relative or significant other informant version (PCRS-R), and a treating clinician or multidisciplinary rehabilitation therapist version (PCRS-C). Each item asks the respondent to rate how much difficulty the patient experiences across a spectrum of tasks using a standardized 5-point Likert scale ranging from 1 (“Can’t do”) to 5 (“Can do with ease”). Across exploratory and confirmatory psychometric evaluations, the PCRS typically delineates four distinct neurofunctional domains: functional activities of daily living (ADLs), cognitive functioning, interpersonal/relational competencies, and emotional/affective regulation. Total scale scores range from 30 to 150, with relative discrepancy indices (calculated as the arithmetic difference between patient and informant/clinician scores) serving as the primary metric for operationalizing anosognosia. Psychometric analyses demonstrate high internal consistency (Cronbach’s alpha values typically ranging from α = 0.89 to 0.95 across respondent versions), robust test-retest reliability ($r = 0.85$ to $0.97$), and well-substantiated construct and criterion-related validity against objective neuropsychological performance metrics, return-to-work trajectories, and behavioral indices of executive dysfunction.

2. Keywords

Patient Competency Rating Scale, anosognosia, self-awareness, traumatic brain injury, neurorehabilitation, executive functioning, informant discrepancy, neuropsychological assessment, emotional regulation, functional competency

3. Authors

The Patient Competency Rating Scale was devised by George P. Prigatano, Ph.D., and his clinical research collaborators in 1986 during his tenure at the Presbyterian Hospital in Oklahoma City and subsequently refined at the Barrow Neurological Institute in Phoenix, Arizona. Dr. Prigatano is an internationally recognized pioneer in holistic neuropsychological rehabilitation and the study of impaired self-awareness after acquired brain injury.

Key contributors and adaptation authors include:

• George P. Prigatano, Ph.D., ABPP: Department of Clinical Neuropsychology, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona, United States.
• Collaborating Rehabilitation Team (1986): Ford, D. J., Pepping, M., Clark, P. R., Wood, I. N., and associates, who contributed to early pilot testing and cross-validation within post-acute rehabilitation milieus.
• Cross-Cultural and Language Adaptation Investigators: Notably, Harold Eilander and colleagues (1998) standardized the Dutch translation for clinical rehabilitation facilities in the Netherlands; additional validated adaptations have been completed in Spanish, Italian, Portuguese, and German by international neurotrauma consortia.

4. Purpose

The primary clinical and research objective of the Patient Competency Rating Scale is the quantitative appraisal and qualitative dissection of self-awareness deficits following acquired central nervous system lesions. Following severe closed head injury or focal vascular insults, patients frequently manifest anosognosia—the neurogenic inability to recognize, appraise, or realistically appreciate one’s cognitive, physical, and behavioral impairments. Traditional cognitive testing battery scores (e.g., standard IQ tests, episodic memory retention measures) often fail to capture this metacognitive breakdown. The PCRS overcomes this diagnostic limitation by contrasting the patient’s subjective appraisal of their behavioral efficacy with parallel observations provided by informed collateral sources (spouses, primary caregivers, or seasoned rehabilitation clinicians).

In clinical practice, the PCRS serves several distinct functions across acute, post-acute, and chronic phases of neurotrauma recovery:

• Baseline Awareness Profiling: Identifying the presence and magnitude of discrepancy between patient and informant ratings enables clinicians to pinpoint domains where the patient possesses preserved insight (e.g., acknowledging gross motor deficits) versus profound denial or neurogenic unawareness (e.g., overlooking disinhibition, executive dyscontrol, or memory failure).
• Goal-Setting and Therapeutic Alliance Formation: Discrepancies illuminate divergence between the patient’s self-selected goals and realistic rehabilitation targets. By identifying unacknowledged limitations, the treatment team can structure metacognitive experiential-feedback therapies that circumvent direct confrontation while fostering realistic safety boundaries.
• Outcome Monitoring and Efficacy Assessment: Longitudinal administration allows clinicians to track the emergence of “emergent awareness” and “anticipatory awareness.” Reductions in the absolute discrepancy gap between patient and family ratings over the course of comprehensive neurorehabilitation serve as an empirical indicator of restored metacognitive monitoring.
• Caregiver Burden and Family Counseling: Significant informant-patient discordance correlates strongly with psychological distress and perceived burden in family caregivers. The PCRS delineates the precise behavioral areas (e.g., temper outbursts, social disinhibition) causing familial tension, thereby directing targeted psychoeducational and respite interventions.
• Predictive Prognostication: Discrepancy scores are robust predictive biomarkers for vocational reintegration, community re-entry success, independent living capabilities, and compliance with compensatory strategy adoption (e.g., digital memory organizers, safety checklists).

5. Psychological Construct

The overarching construct operationalized by the PCRS is metacognitive self-awareness of competency within the context of everyday ecological functioning. In neuropsychology, competency does not merely denote raw cognitive capacity, but rather the integrated, real-world deployment of cognitive, physical, emotional, and social capacities under fluctuating environmental demands. Rather than assessing abstract constructs, the PCRS evaluates thirty discrete, ecologically grounded behavioral competencies partitioned across four interconnected domains:

1. Activities of Daily Living and Functional Independence

This dimension encompasses basic and instrumental activities of daily living (ADLs and IADLs). It examines self-care and household management tasks such as preparing meals (Item 1), dressing oneself (Item 2), maintaining personal hygiene (Item 3), washing dishes (Item 4), doing laundry (Item 5), managing personal finances and checkbook balancing (Item 6), and operating a motor vehicle safely (Item 14). Preserved awareness in this domain requires realistic assessment of sensorimotor integration, visual-spatial coordination, and sequential procedural execution.

2. Cognitive Functioning

The cognitive dimension probes foundational neurocognitive operations including working memory, prospective memory, attention regulation, and informational assimilation. Items assess the retrieval of everyday retrospective details (Item 10: remembering yesterday’s dinner; Item 11: recalling familiar names), adherence to temporal routines (Item 7: keeping appointments; Item 12: remembering daily schedules), prose comprehension and retention (Item 13: remembering reading material; Item 28: understanding text), initiative and self-directed task persistence (Item 9: sustaining work focus through fatigue; Item 30: self-starting without external prompting), and problem identification (Item 15: actively soliciting help when experiencing confusion).

3. Emotional and Affective Regulation

Acquired brain damage frequently compromises orbitofrontal and anterior cingulate networks, producing emotional lability, irritability, and depressive vulnerability. The emotional subscale taps the individual’s capacity to modulate affective reactivity, maintain emotional homeostasis, and tolerate stress. Items evaluate the control of tearfulness/crying (Item 19), management of aggressive or temper outbursts (Item 24), active mitigation of depressive mood states (Item 25), overarching emotional self-regulation (Item 26), coping with interpersonal criticism (Item 18), and resilience against public humiliation or teasing (Item 29).

4. Interpersonal and Social-Behavioral Competency

Social cognition requires dynamic theory of mind, inhibitory control, and behavioral monitoring within shifting interpersonal contexts. This domain measures the patient’s capacity to navigate complex social ecosystems, including group communication initiation (Item 8), behavioral flexibility during unexpected familial disruptions (Item 16), dispute resolution with close associates (Item 17), social decorum among peers (Item 20), appropriate expression of affection (Item 21), participation in structured group activities (Item 22), reciprocal conversational participation (Item 27), and the self-monitoring capacity to identify when one’s conduct violates social norms (Item 23).

6. Theoretical Framework

The theoretical architecture of the Patient Competency Rating Scale is grounded in George P. Prigatano’s hierarchical neurobehavioral model of anosognosia and Alexander Luria’s neuropsychological framework of tertiary frontal lobe systems. Prigatano synthesized classical neurology with cognitive psychology, conceptualizing self-awareness not as a monolithic, all-or-none phenomenon, but as a dynamic, multilevel neurocognitive hierarchy consisting of:

• Intellectual Awareness: The cognitive capacity to comprehend that a particular function or capacity is diminished relative to pre-injury baseline status.
• Emergent Awareness: The online, real-time recognition of a problem as it actively occurs during task engagement.
• Anticipatory Awareness: The highest metacognitive tier, involving prospective mental simulation of future scenarios to foresee potential difficulties and preemptively recruit compensatory adaptations.

This structure closely aligns with the Dynamic Comprehensive Model of Awareness (Toglia & Kirk, 2000), which posits that self-awareness emerges from an ongoing dialectic between static knowledge (beliefs, memories, pre-injury identity) and dynamic online processing (self-evaluation, monitoring, error detection). When frontal-subcortical circuits—specifically the prefrontal cortex, anterior cingulate cortex, insular cortex, and right parietal associative regions—are disrupted, error-monitoring signals fail to generate the necessary affective and somatic markers. Consequently, the patient relies on out-of-date pre-morbid self-schemata, leading them to rate their competency far higher than objective evidence or collateral observations warrant.

Furthermore, the scale’s tripartite discrepancy methodology (Patient vs. Relative vs. Clinician) draws upon social cognitive theory and symbolic interactionism, recognizing that human functional competence is socially situated. True adaptation requires that an individual’s behavioral reality congruent with environmental demands and the social perceptions of their community.

7. Validity

The psychometric validity of the PCRS has been extensively confirmed across numerous independent clinical trials, validation studies, and cross-cultural investigations over the past four decades.

Construct and Convergent Validity

Construct validity is evidenced by robust correlations between PCRS discrepancy indices and established neurobehavioral and neuropsychological markers. Prigatano et al. (1986, 1990) established that discrepancy scores (Patient total minus Relative total) correlate significantly with standardized objective tests of executive functioning, such as the Wisconsin Card Sorting Test (WCST perseverative errors, $r = 0.38$ to $0.46, p < .01$) and the Halstead-Reitan Neuropsychological Battery Impairment Index. Furthermore, Fleming, Strong, and Ashton (1996) demonstrated that PCRS discrepancy scores demonstrate strong convergent validity with the Self-Awareness of Deficits Interview (SADI; $r = 0.61, p < .001$) and the Awareness of Deficits Questionnaire (ADQ).

Discriminant and Known-Groups Validity

The PCRS effectively differentiates clinical cohorts from neurologically intact control samples. While healthy control dyads (healthy individuals paired with their spouses) display near-zero discrepancy scores (mean discrepancies typically oscillating between $-1.5$ and $+2.0$ points), individuals with moderate-to-severe TBI exhibit markedly positive discrepancy scores (frequently exceeding $+15.0$ to $+25.0$ points), indicating significant overestimation of competence ($p < .001$). Additionally, the scale reliably discriminates between patients classified clinically as possessing preserved insight versus those with severe anosognosia diagnosed via structured clinical interviews.

Predictive and Ecological Validity

In prospective longitudinal investigations, baseline PCRS discrepancy scores consistently predict real-world functional outcomes at 1, 2, and 5 years post-injury. Patients whose self-appraisals closely align with relative ratings demonstrate significantly higher rates of successful vocational reintegration, greater independence in living arrangements, higher adherence to compensatory memory tools, and lower frequency of post-discharge behavioral crises (Prigatano et al., 1994; Sherer et al., 2003). Conversely, marked overestimation of competency on the PCRS strongly predicts catastrophic failures during driving trials, rehabilitation drop-out, and heightened family caregiver burnout.

8. Reliability

The PCRS exhibits exemplary psychometric reliability across diverse clinical populations, respondent cohorts, and international language translations.

Internal Consistency

Across validation cohorts, internal consistency estimates (Cronbach’s alpha) for the total 30-item scale consistently exceed acceptable psychometric standards:

• Patient Form (PCRS-P): α values consistently fall between $0.89$ and $0.93$.
• Informant/Relative Form (PCRS-R): α values range from $0.91$ to $0.95$.
• Clinician Form (PCRS-C): α values routinely achieve $0.93$ to $0.96$.

Subscale reliability analyses likewise indicate moderate-to-high internal consistency across individual domains: ADLs (α = 0.82 to 0.88), Cognitive Functioning (α = 0.84 to 0.90), Emotional Regulation (α = 0.78 to 0.85), and Interpersonal Competencies (α = 0.79 to 0.86).

Test-Retest Reliability and Stability

Temporal stability evaluated across 1- to 4-week test-retest intervals in stable outpatients has demonstrated intra-class correlation coefficients (ICC) and Pearson correlation coefficients ranging from $r = 0.85$ to $r = 0.97$ for relative forms and $r = 0.81$ to $r = 0.91$ for patient forms, confirming that the tool is sufficiently reliable for repeated administration across clinical treatment trajectories.

Inter-Rater Reliability

When multiple multidisciplinary clinicians (e.g., occupational therapists, speech-language pathologists, neuropsychologists) independently complete the PCRS-C on the same patient, inter-rater concordance remains elevated, with Kendall’s coefficient of concordance ($W$) and ICCs typically exceeding $0.80$, reflecting robust clarity in the behavioral anchoring of the items.

9. Factor Analysis

Extensive exploratory (EFA) and confirmatory factor analyses (CFA) have confirmed the multi-dimensional structure of the PCRS. Early structural investigations by Prigatano et al. (1986) alongside subsequent factor-analytic explorations by Leathem, Murphy, and Flett (1998), Bogod et al. (2003), and Eilander et al. (1998) have clarified the internal structure of the instrument.

Factor Solutions and Model Fit

While unconstrained initial principal component extractions reveal a dominant first factor accounting for upwards of $35%$ to $42%$ of the total item variance, varimax and oblimin rotated solutions across clinical samples consistently yield a robust four-factor latent architecture:

• Factor 1: Cognitive Competency (8–10 items): High loadings (λ > 0.55) from items assessing memory retrieval (Items 10, 11, 12, 13), sustained mental effort (Item 9), understanding written instructions (Item 28), and self-initiated execution (Item 30).
• Factor 2: Emotional/Affective Self-Regulation (7–8 items): High loadings from items evaluating anger control (Item 24), crying lability (Item 19), depressive affect management (Item 25), overall emotional equilibrium (Item 26), and tolerance of criticism (Item 18).
• Factor 3: Practical/ADL Independence (6–7 items): Characterized by robust loadings from items measuring self-care, cooking, housekeeping, laundry, and financial accounting (Items 1, 2, 3, 4, 5, 6, 14).
• Factor 4: Interpersonal/Social Behavior (5–6 items): High saturation from items capturing group conversational engagement (Items 8, 22, 27), sensitivity to social appropriateness (Item 23), and interpersonal conflict management (Items 16, 17, 20).

Confirmatory factor analytic investigations evaluating this correlated four-factor model have demonstrated adequate to superior model fit across independent brain-injured samples, with Comparative Fit Index ($CFI$) values typically ranging from $0.90$ to $0.94$, Root Mean Square Error of Approximation ($RMSEA$) falling between $0.052$ and $0.068$, and Standardized Root Mean Square Residual ($SRMR$) under $0.065$, establishing structural construct invariance across respondent versions.

10. Instrument / Measurement Tool

The Patient Competency Rating Scale is structured as an ecologically valid, multi-informant rating system. Its structural parameters are summarized below:

• Test Type: Neuropsychological and neurobehavioral rating inventory; multi-informant discrepancy assessment.
• Respondent Versions:
  • Patient Version (PCRS-P): Completed directly by the individual with neurological impairment.
  • Relative/Informant Version (PCRS-R): Completed independently by a spouse, family member, or close caregiver.
  • Clinician Version (PCRS-C): Completed by a rehabilitation professional familiar with the individual’s daily functioning.
• Number of Items: 30 items per form (identical item phrasing adapted only for point of view: “How much of a problem do you have…” vs. “How much of a problem does he/she have…”).
• Response Format: 5-point Likert scale:
  • 1 = Can’t do
  • 2 = Very difficult to do
  • 3 = Can do with some difficulty
  • 4 = Fairly easy to do
  • 5 = Can do with ease
• Scoring and Quantification Rules:
  • Total Score Range: 30 to 150 points for each version. Higher scores reflect greater perceived behavioral competency.
  • Discrepancy Score Computation: Calculated as: $\text{Discrepancy} = \text{PCRS-P Total Score} – \text{PCRS-R Total Score}$ (or alternatively $\text{PCRS-P} – \text{PCRS-C}$).
  • Clinical Interpretation of Discrepancy:
    • Discrepancy > 0 (Positive Discrepancy): The patient rates themselves as significantly more competent than their relative or clinician does, indicating impaired self-awareness (anosognosia).
    • Discrepancy ≈ 0 (Balanced): Congruence between raters, denoting intact, realistic self-awareness.
    • Discrepancy < 0 (Negative Discrepancy): The patient rates themselves as having greater impairment than observers report, frequently indicative of psychological distress, depressive realism, catastrophizing, or anxiety.
• Administration Time: Approximately 10 to 15 minutes per form.

11. Permissions & Fee and Test Year

The Patient Competency Rating Scale was first published in 1986 by Dr. George P. Prigatano and colleagues in their seminal text Neuropsychological Rehabilitation After Brain Injury (Johns Hopkins University Press). The scale was placed in the academic and clinical public domain to facilitate widespread clinical practice, rehabilitation research, and cross-cultural neuropsychological studies.

• Year of Initial Publication: 1986 (Original English version); 1998 (Standardized Dutch version by Harold Eilander).
• Commercial Licensing / Fees: The PCRS is non-proprietary and is not marketed by commercial test publishers behind restrictive paywalls. It can be utilized free of charge for non-commercial research, academic, and clinical rehabilitation purposes.
• Permissions and Usage Guidelines: Researchers and clinicians wishing to employ, translate, or adapt the scale are expected to cite the primary foundational publications of Dr. George P. Prigatano and maintain the standardized wording and 5-point response scale to preserve psychometric comparability.

12. References

The following peer-reviewed publications and clinical sources substantiate the psychometric parameters and theoretical foundation of the PCRS:

• Bogod, N. M., Mateer, C. A., & Macdonald, S. W. (2003). Self-awareness after traumatic brain injury: A comparison of measures and their relationship to executive functions. Journal of the International Neuropsychological Society, 9(3), 450–458. https://doi.org/10.1017/s1355617703930104
• Eilander, H. J., van Heugten, C. M., & de Kort, P. L. (1998). Meetinstrumenten voor de evaluatie van zelfbewustzijn na hersenletsel: De Patient Competency Rating Scale (PCRS). Tijdschrift voor Neurologie en Neurochirurgie, 99, 142–148.
• Fleming, J. M., Strong, J., & Ashton, R. (1996). Self-awareness of deficits in adults with traumatic brain injury: How best to measure? Brain Injury, 10(1), 1–16. https://doi.org/10.1080/026990596124665
• Leathem, J. M., Murphy, L. J., & Flett, R. A. (1998). Self- and informant-ratings on the Patient Competency Rating Scale in New Zealand. Brain Injury, 12(6), 523–537. https://doi.org/10.1080/026990598122421
• Prigatano, G. P., Ford, D. J., Pepping, M., Clark, P. R., & Wood, I. N. (1986). Neuropsychological Rehabilitation After Brain Injury. Baltimore: Johns Hopkins University Press.
• Prigatano, G. P., Altman, I. M., & O’Brien, G. W. (1990). Behavioral limitations that traumatic-brain-injured patients tend to underestimate. The Clinical Neuropsychologist, 4(2), 163–176. https://doi.org/10.1080/13854049008401509
• Prigatano, G. P., & Schacter, D. L. (Eds.). (1991). Awareness of Deficit After Brain Injury: Clinical and Theoretical Issues. New York: Oxford University Press.
• Sherer, M., Hart, T., Nick, T. G., Whyte, J., Thompson, R. N., & Yablon, S. A. (2003). Early impaired self-awareness after traumatic brain injury. Archives of Physical Medicine and Rehabilitation, 84(2), 168–176. https://doi.org/10.1053/apmr.2003.50045
• Toglia, J., & Kirk, U. (2000). Understanding awareness deficits following brain injury. NeuroRehabilitation, 15(1), 57–70. https://doi.org/10.3233/NRE-2000-15107

13. Items of the Scale (Questionnaire)