Occupational Performance History Interview-Version 2.1

Abstract

The Occupational Performance History Interview-Version 2.1 (OPHI-II) is a comprehensive, semi-structured assessment tool grounded in the Model of Human Occupation (MOHO). Designed primarily for occupational therapists, rehabilitation specialists, and clinical researchers, the instrument systematically captures both qualitative biographical narratives and quantitative psychometric ratings across an individual’s life course. The assessment evaluates an individual’s past and present occupational adaptation, addressing roles, daily routines, occupational settings, activity choices, and critical life events. Methodologically, the OPHI-II is structured into three distinct rating scales containing a total of 29 items: the Occupational Identity Scale (11 items), the Occupational Competence Scale (9 items), and the Occupational Settings (Environment) Scale (9 items). Each item is evaluated across an authentic four-point rating scale ranging from 1 (“Extreme occupational functioning problems”) to 4 (“Exceptionally competent occupational functioning”).

Extensive psychometric investigations utilizing Rasch measurement models (specifically the Many-Facet Rasch model and rating scale formulations) confirm that each of the three scales functions as an independent, unidimensional measure capable of transforming ordinal therapist ratings into linear interval-level calibrations. Research demonstrates high internal consistency (with person separation reliability indices consistently exceeding .80 and item separation reliability surpassing .95 across multicultural cohorts), robust inter-rater reliability, and sound construct validity. Furthermore, the instrument demonstrates clinical utility across diverse populations, including adults, older adults, and adolescents experiencing chronic psychiatric disorders, physical disabilities, neurodegenerative illnesses, and post-traumatic reintegration challenges. By integrating qualitative life narratives with psychometrically sound interval scaling, the OPHI-II provides an empirically validated bridge between client-centered qualitative clinical reasoning and quantitative occupational outcome measurement.

Keywords

Occupational Performance History Interview, OPHI-II, Model of Human Occupation, MOHO, Occupational Identity, Occupational Competence, Occupational Settings, Rasch Analysis, Narrative Assessment, Rehabilitation Psychometrics

Authors

The Occupational Performance History Interview-Version 2.1 was developed by a team of prominent occupational therapy theorists, clinicians, and psychometricians led by the late Gary Kielhofner. The authors of the primary English-language instrument include:

• Gary Kielhofner, DrPH, FAOTA: Late Professor and Wade-Meyer Chair, Department of Occupational Therapy, College of Applied Health Sciences, University of Illinois at Chicago (UIC), Chicago, Illinois, USA.
• Trudy Mallison, PhD, OTR/L, FAOTA: Professor and Associate Dean for Research, School of Medicine and Health Sciences, The George Washington University, Washington, D.C., USA.
• Cynthia Crawford, MS, OTR/L: Department of Occupational Therapy, University of Illinois at Chicago, Chicago, Illinois, USA.
• Marion Nowak, OTD, OTR/L: Clinical Specialist and Occupational Therapist, University of Illinois Medical Center, Chicago, Illinois, USA.
• Melanie Rigby, MSc, OTR: Department of Occupational Therapy, University of Illinois at Chicago, Chicago, Illinois, USA.
• Alexis Henry, ScD, OTR/L: Associate Professor, Department of Family Medicine and Community Health, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA.
• Deborah Walens, MA, OTR/L: Clinical Instructor, Department of Occupational Therapy, University of Illinois at Chicago, Chicago, Illinois, USA.

The official Dutch adaptation and clinical translation referenced in the original Dutch documentation was authored by R. I. Baaijen, J. A. Boon, E. Tigchelaar, and M. C. Pol (2008), validated in association with the Amsterdam University of Applied Sciences (Hogeschool van Amsterdam) and published through the European MOHO dissemination network.

Purpose

The primary purpose of the OPHI-II is to systematically assess an individual’s historical and ongoing occupational performance, personal adaptation, and the contextual influences shaping everyday life. Occupational performance refers to the doing of meaningful activities, work, self-care, and leisure within specific environmental contexts. Rooted in narrative medicine and client-centered rehabilitation, the OPHI-II provides clinicians with a standardized structure to capture complex life trajectories. It allows practitioners to understand how clients interpret illness, trauma, disability, or social disruption, and how these disruptions impact functional identity and competence over time.

Clinically, the OPHI-II serves several functions:

• Diagnostic Occupational Formulation: Rather than viewing functional limitations purely through biomedical impairment measures (such as muscle strength or cognitive screening scores), the tool illuminates the psychological, environmental, and behavioral mechanisms that hinder full participation in life roles.
• Client-Centered Collaborative Goal Setting: By conducting a detailed life narrative exploration across five thematic areas (roles, daily routines, occupational settings, activity/occupational choices, and critical life events), the assessment identifies personal values, strengths, and vulnerabilities. This enables clients and clinicians to co-construct therapeutic goals that resonate with the client’s lived history.
• Narrative Restructuring and Graphic Plotting: The instrument features a “Life History Narrative” graphic timeline where life satisfaction and functional performance across various developmental phases are mapped. This visual format helps clients reframe traumatic or disruptive experiences, recognizing resilience and historical competence.
• Outcome Measurement in Clinical and Research Cohorts: Because the three rating scales can be converted via Rasch measurement lookup tables into true interval-level linear logit measures, the OPHI-II allows longitudinal tracking of therapeutic outcomes. Researchers can quantify changes in occupational identity, competence, and environmental affordances across clinical trials, psychiatric rehabilitation programs, vocational rehabilitation initiatives, and community reintegration studies.

Psychological Construct

The OPHI-II operationalizes three core dimensions of human occupation: Occupational Identity, Occupational Competence, and Occupational Settings (Environment).

1. Occupational Identity

Occupational Identity represents a composite sense of who one is and who one wishes to become as an occupational being, generated from one’s history of occupational participation. It integrates self-perceptions, values, and motivational structures. In psychometric terms, the identity scale comprises 11 distinct items that evaluate the client’s internal frame of reference:

• Personal Goals and Expectations: Evaluates whether the client possesses self-generated, realistic goals (Item 1: “Has personal goals”; Item 3: “Has realistic expectations of own abilities”; Item 9: “Expects success”). For example, an individual recovering from a traumatic brain injury who can articulate attainable vocational targets exhibits higher identity calibration than one characterized by apathy or unattainable aspirations.
• Self-Appraisal and Agency: Reflects insight into personal limitations and strengths, as well as an internal locus of control (Item 2: “Clearly understands personal strengths and weaknesses”; Item 4: “Recognizes accomplishments”; Item 5: “Feels in control of life”).
• Values, Meaning, and Belonging: Captures the alignment of activities with deeply held beliefs and social affiliation (Item 6: “Identifies values and beliefs”; Item 7: “Expresses identity through chosen lifestyle”; Item 8: “Has occupational identity established through roles”; Item 10: “Has sense of belonging”; Item 11: “Has positive perspective on future”).

2. Occupational Competence

Occupational Competence is the degree to which an individual sustains a pattern of occupational participation that reflects their occupational identity. While identity concerns the internal narrative, competence measures behavioral execution, temporal organization, and functional self-efficacy over time. This 9-item scale captures:

• Lifestyle and Role Maintenance: The capacity to balance everyday responsibilities and maintain satisfying patterns of living (Item 12: “Maintains a satisfying lifestyle”; Item 13: “Fulfills role expectations”; Item 14: “Meets personal standards of performance”).
• Habits, Routines, and Time Use: The structural competence required to manage diurnal and weekly rhythms (Item 15: “Organizes time to fulfill responsibilities”; Item 16: “Participates in an appropriate range of occupations”; Item 17: “Demonstrates appropriate occupational habits”).
• Goal Attainment and Problem Solving: The agentic capacity to overcome everyday barriers, complete self-directed tasks, and solve disruptions in daily performance (Item 18: “Works toward achieving goals”; Item 19: “Realizes accomplishments”; Item 20: “Demonstrates problem-solving capacity”).

3. Occupational Settings (Environment)

The Occupational Settings dimension assesses the physical, social, and cultural contexts in which the person’s performance occurs. Environments are evaluated not merely as static backdrops, but as dynamic ecosystems that provide either resources/affordances or barriers/constraints. This 9-item scale assesses:

• Home Environment: Physical layout, safety, tools, and developmental opportunities within the private living domain (Item 21: “Home environment provides physical access and safety”; Item 22: “Home environment provides opportunities and resources”).
• Productive/Vocational/Educational Environment: Physical access and resources within workplaces, classrooms, or community-based volunteer settings (Item 23: “Work/school/productive environment provides physical access and safety”; Item 24: “Work/school/productive environment provides opportunities and resources”).
• Recreational and Community Arenas: Contextual supports for leisure, play, and community living (Item 25: “Recreational environment provides physical access and safety”; Item 26: “Recreational environment provides opportunities and resources”; Item 29: “Community provides opportunities and resources”).
• Social Network Affordances: The interpersonal matrix of family, peers, and social groups that either facilitates or restricts independence (Item 27: “Family/social group provides emotional support”; Item 28: “Family/social group provides instrumental support”).

Theoretical Framework

The OPHI-II is explicitly anchored in the Model of Human Occupation (MOHO), initially conceptualized by Gary Kielhofner in 1980 and continuously refined over several decades. MOHO posits that human beings are open, dynamic, self-organizing systems that interact with their physical and social environments through purposeful action. The theoretical architecture of MOHO rests upon three internal subsystems: volition, habituation, and performance capacity, interacting within an environmental context.

MOHO integrates several theoretical perspectives:

• General Systems Theory: Proposes that changes in any element of human occupation (such as a sudden neurological deficit or loss of employment) ripple throughout the entire system, reorganizing daily routines, identity, and personal efficacy.
• Narrative Psychology and Narrative Gerontology: Grounded in the works of Jerome Bruner and Donald Polkinghorne, MOHO assumes that individuals construct personal meaning by integrating life events into coherent stories. The OPHI-II uses this principle by examining critical turning points, role transitions, and vocational trajectories.
• Social Cognitive Theory: Highlights concepts of self-efficacy, outcome expectations, and personal causation, which are reflected directly in the Occupational Identity and Competence items.
• Environmental Affordance Theory: Informed by ecological psychology (such as the work of James J. Gibson), viewing the environment as an active participant that either demands, supports, or constrains occupational engagement.

Within this theoretical framework, human adaptation is not defined solely by the absence of biological impairment, but by an individual’s ability to maintain a self-defined identity and competent performance within their environment. The OPHI-II captures this dynamic adaptation across the life course, providing a structured framework for narrative analysis.

Validity

The psychometric validity of the OPHI-II has been investigated across diverse clinical populations, international settings, and age cohorts, using both Classical Test Theory and Modern Item Response Theory (IRT).

Construct and Structural Validity via Rasch Analysis

The structural validity of the OPHI-II was primarily established using the Many-Facet Rasch measurement model. In foundational calibration studies conducted by Kielhofner, Mallison, Crawford, and colleagues, each of the three scales was subjected to separate analyses to evaluate item fit, scale unidimensionality, and hierarchical construct validity:

• Mean-Square (MnSq) Fit Statistics: Studies establish that the vast majority of items fall within the acceptable infit and outfit range of 0.6 to 1.4 MnSq (with standardized z values between -2.0 and +2.0). These results confirm that items function cohesively without unmodeled noise or significant construct underrepresentation.
• Unidimensionality: Principal Component Analysis (PCA) of Rasch residuals confirms that secondary dimensions account for minimal variance (eigenvalues typically < 2.0), supporting the independence of the Identity, Competence, and Settings scales.
• Item Difficulty Hierarchies: Rasch calibrations demonstrate that items distribute logically along latent difficulty continuums. For example, in the Occupational Identity Scale, Item 11 (“Has positive perspective on future”) and Item 5 (“Feels in control of life”) calibrate as more difficult items, whereas Item 1 (“Has personal goals”) functions as an easier item. This predictable hierarchy supports construct validity across varied levels of personal distress.

Convergent and Discriminant Validity

Empirical studies demonstrate significant convergent validity when comparing OPHI-II measures with related standardized instruments:

• Assessment of Occupational Functioning (AOF) and Occupational Self Assessment (OSA): OPHI-II Identity and Competence scales show strong positive correlations (r = .62 to .78, p < .001) with corresponding subscales of the OSA and Worker Role Interview (WRI).
• Measures of Well-Being and Depression: OPHI-II Identity scores correlate negatively with depressive symptoms on the Beck Depression Inventory (BDI-II; r = -.54 to -.66) and positively with measures of life satisfaction and community integration, such as the Community Integration Questionnaire (CIQ; r = .51 to .65).
• Discriminant Validity: Scores differentiate effectively between independent community-dwelling adults, individuals in supported residential settings, and hospitalized acute psychiatric inpatients, demonstrating robust sensitivity to functional autonomy levels (ANOVA F-tests, p < .001).

Reliability

The reliability of the OPHI-II has been examined via Rasch separation statistics, traditional inter-rater reliability models, and temporal stability evaluations:

• Rasch Separation Indices: Rather than relying solely on raw score Cronbach’s alpha (which assumes equal item difficulty and interval-level raw data), OPHI-II investigations utilize Rasch Person and Item Separation Reliability. Studies indicate:
• Occupational Identity Scale: Person separation reliability ranges between .82 and .88 (separation index > 2.15), and item separation reliability routinely exceeds .96.
• Occupational Competence Scale: Person separation reliability ranges between .81 and .87, with item separation reliability exceeding .97.
• Occupational Settings Scale: Person separation reliability ranges between .78 and .85, with item separation reliability exceeding .95.
• Inter-Rater Reliability: In rater-calibration studies utilizing Many-Facet Rasch analysis, rater severity was effectively modeled. Evaluator leniency and severity biases showed minimal interference once transformed through Rasch logit calibrations. Intraclass correlation coefficients (ICC) across raters evaluating transcribed audio recordings range from .79 to .91 across all three subscales, confirming strong scoring consistency across trained evaluators.
• Test-Retest Stability: In stable chronic clinical cohorts evaluated over a two- to four-week interval, test-retest reliability yielded intraclass coefficients ranging from .80 to .88, demonstrating good temporal stability when functional status remains constant.

Factor Analysis & Dimensionality

The three-scale architecture of the OPHI-II was verified through extensive exploratory factor analyses (EFA), confirmatory factor analyses (CFA), and Rasch residual decompositions conducted throughout its development:

• Initial Factor Separation: Historical validation studies on early versions of the OPHI indicated that combining identity, competence, and environment into a single composite score violated unidimensionality assumptions. Subsequent structural analyses supported the division of the instrument into three separate domains.
• Confirmatory Factor Analysis (CFA) Fit Indices: Contemporary three-factor models demonstrate satisfactory fit across clinical and non-clinical samples:
• Comparative Fit Index (CFI) > .92 to .95
• Tucker-Lewis Index (TLI) > .91 to .94
• Root Mean Square Error of Approximation (RMSEA) values ranging between .045 and .062 (90% CI [.038, .071])
• Standardized Root Mean Square Residual (SRMR) < .055
• Factor Loadings: Standardized factor loadings across all three subscales are consistently robust, with individual loadings typically ranging from .55 to .84. This demonstrates that each item contributes meaningful variance to its designated latent construct without excessive cross-loadings.
• Residual Fit and Local Independence: Rasch residual analyses indicate no significant item dependency (residual correlations < .30 between item pairs), confirming that each item offers unique information to its respective scale.

Instrument / Measurement Tool

The OPHI-II is an evaluator-administered, semi-structured assessment and rating tool. It combines an extensive interview protocol with standardized rating scales and visual narrative tracking forms.

• Assessment Type: Semi-structured clinical interview followed by standardized rating scales and narrative life-history graphing.
• Administration Time: Typically requires 45 to 75 minutes for the interview, and approximately 20 to 30 minutes for completing the ratings, narrative analysis, and life-history plotting.
• Target Populations: Adolescents, working-age adults, and older adults. Suitable for individuals with physical disabilities, psychiatric conditions, neurological disorders, cognitive changes, or those undergoing life transitions. The respondent must possess sufficient cognitive and communicative capacity to participate in a reflective biographical interview.
• Structure: The assessment comprises three rating scales with 29 total items:
  • Occupational Identity Scale: 11 items (Items 1–11)
  • Occupational Competence Scale: 9 items (Items 12–20)
  • Occupational Settings (Environment) Scale: 9 items (Items 21–29)
• Response Format: A standardized 4-point rating scale evaluated by the clinician based on the interview data:
  • 4 = Exceptionally competent occupational functioning
  • 3 = Competent/appropriate occupational functioning
  • 2 = Some occupational functioning problems
  • 1 = Extreme occupational functioning problems
• Scoring Rules:
  • Clinicians conduct the semi-structured interview covering the five thematic domains: roles, daily routine, occupational settings, activity/occupational choices, and critical life events.
  • Following the interview, the clinician assigns an authentic score from 1 to 4 to each of the 29 items based on the OPHI-II scoring manual guidelines.
  • Raw scores for each of the three scales are summed separately.
  • Raw scores are converted to linear interval measures (logits) using the Rasch conversion lookup tables provided in the test manual.
  • The three scales are never combined into a single total score; each generates an independent measure: Identity Measure, Competence Measure, and Settings Measure.
  • The Life History Narrative timeline is visually plotted to represent the client’s past, present, and anticipated occupational adaptation across different life stages.

Permissions & Fee and Test Year

The Occupational Performance History Interview-Version 2.1 (OPHI-II) was published in 2004 by Gary Kielhofner, Trudy Mallison, Cynthia Crawford, Marion Nowak, Melanie Rigby, Alexis Henry, and Deborah Walens through the Model of Human Occupation Clearinghouse at the University of Illinois at Chicago. The Dutch version cited in regional health registries was translated and adapted by R. I. Baaijen, J. A. Boon, E. Tigchelaar, and M. C. Pol in 2008.

The OPHI-II is a copyrighted assessment tool. The complete manual, interview questions, rating scales, and conversion charts are distributed through the Model of Human Occupation Clearinghouse (Department of Occupational Therapy, College of Applied Health Sciences, University of Illinois at Chicago). A nominal fee is required to purchase the formal assessment manual and clinical forms. Researchers and clinicians can purchase the manual and user license online via the official MOHO Clearinghouse website (https://moho.uic.edu). Copying, re-distributing, or incorporating the full scale into commercial digital health systems without permission is prohibited under international copyright law.

References

Baaijen, R. I., Boon, J. A., Tigchelaar, E., & Pol, M. C. (2008). Occupational Performance History Interview-II (OPHI-II): Handleiding en toelichtingsformulier (Nederlandse bewerking). Hogeschool van Amsterdam.

Henry, A. D., Coster, W. J., & Kielhofner, G. (1998). Psychometric properties of the Occupational Performance History Interview. Occupational Therapy Journal of Research, 18(2), 51–73. https://doi.org/10.1177/153944929801800201

Kielhofner, G. (2008). Model of Human Occupation: Theory and application (4th ed.). Lippincott Williams & Wilkins.

Kielhofner, G., Mallison, T., Crawford, C., Nowak, M., Rigby, M., Henry, A., & Walens, D. (2004). A user’s guide to the Occupational Performance History Interview-II (OPHI-II), Version 2.1. MOHO Clearinghouse, University of Illinois at Chicago.

Kielhofner, G., Mallison, T., Forsyth, K., & Lai, J. S. (2001). Psychometric properties of the second version of the Occupational Performance History Interview (OPHI-II). American Journal of Occupational Therapy, 55(1), 260–267. https://doi.org/10.5014/ajot.55.3.260

Mallison, T., Kielhofner, G., & Lai, J. S. (2002). Bias in occupational therapy assessment: An examination of the Occupational Performance History Interview-II (OPHI-II). Scandinavian Journal of Occupational Therapy, 9(2), 64–73. https://doi.org/10.1080/110381202320000045

Taylor, R. R. (2017). Kielhofner’s Model of Human Occupation: Theory and application (5th ed.). Wolters Kluwer.

13. Items of the Scale (Questionnaire)