1. Abstract
The Katz Adjustment Scale—Form R2 (KAS-R2), formulated by Martin M. Katz and Samuel B. Lyerly in 1963, is an established informant-report instrument specifically engineered to quantify community adjustment and social role performance among psychiatric patients transitioning from institutional psychiatric care back into the community. As an integral component of the comprehensive Katz Adjustment Scales battery (which comprises parallel forms assessing clinical symptomatology, affective states, performance of socially expected behaviors, and expectations regarding those behaviors), Form R2 isolates the objective performance of socially expected activities. It consists of 16 structured items spanning domestic obligations, personal self-care, social networking, civic and spiritual engagement, and vocational functioning. An informant—predominantly a close relative or cohabiting caregiver who maintains regular contact with the patient—rates the frequency of the patient’s behaviors over the preceding weeks on an authentic three-point ordinal scale (1 = “Is not doing,” 2 = “Is doing some,” 3 = “Is doing regularly”).
Psychometrically, the KAS-R2 exhibits robust criterion and discriminative validity, successfully differentiating between individuals living in the community without psychiatric diagnoses, stabilized outpatients, and relapsed or severely impaired psychiatric patients. Criterion-related concurrent validity is documented through substantial correlations ranging from .67 to .79 between informant ratings and independent psychiatric clinical judgments. Reliability analyses yield Kuder-Richardson internal consistency estimates ranging from .41 to .87 across diverse psychiatric and normative comparison cohorts. Form R2 represents an early effort to operationalize functional recovery, instrumental activities of daily living (IADLs), and social competence in psychopharmacological outcome research, psychiatric rehabilitation, and community mental health monitoring.
2. Keywords
Katz Adjustment Scale, Form R2, social adjustment, community readjustment, psychiatric rehabilitation, informant-report assessment, social role performance, activities of daily living, deinstitutionalization, psychometrics
3. Authors
The Katz Adjustment Scale battery, including Form R2, was developed through collaborative research spearheaded by Martin M. Katz, Ph.D., and Samuel B. Lyerly, Ph.D. During the inception and standardization of the instrument, Dr. Katz served as a leading research clinical psychologist at the National Institute of Mental Health (NIMH) within the Psychopharmacology Service Center (PSC) in Bethesda, Maryland. Dr. Katz dedicated his career to clinical psychopathology, psychopharmacology outcome methodologies, affective disorders, and the objective measurement of behavioral manifestations of mental illness. His work at the NIMH Psychopharmacology Service Center positioned him at the center of the early psychopharmacology revolution, where the objective evaluation of newly synthesized antipsychotic and antidepressant medications demanded reliable instruments capable of detecting subtle, functional changes in real-world settings.
Dr. Samuel B. Lyerly was affiliated with the Human Ecology Fund in New York and Washington, D.C., where his research centered on behavioral ecology, psychometrics, statistical modeling, and social functioning measurement. Together, Katz and Lyerly recognized that prevailing clinical rating systems relied almost exclusively on hospital-based psychiatric evaluations, which failed to capture how patients functioned once discharged home. By collaborating across federal and private research infrastructures, Katz and Lyerly synthesized principles of social psychiatry, behavioral observation, and psychometric scaling to publish the seminal 1963 monograph in Psychological Reports that established the standard for community-based adjustment tracking.
4. Purpose
The primary clinical and research purpose of the Katz Adjustment Scale—Form R2 is to assess an individual’s actual involvement and behavioral performance in socially expected activities within their natural community and domestic environment. Developed during the emergence of the deinstitutionalization movement in American psychiatry, the scale was created to address a significant methodological limitation: the reliance on in-hospital symptom reduction as a proxy for community recovery. Katz and Lyerly recognized that while psychotropic agents (such as phenothiazines) effectively mitigated positive psychotic symptoms or acute affective turbulence, symptom reduction did not automatically translate into successful social, familial, or occupational readjustment.
Form R2 addresses this challenge by shifting the evaluative framework from subjective clinical interviews conducted in artificial hospital settings to direct behavioral observations within the household. The scale measures practical competencies and societal role expectations, including whether a patient maintains personal hygiene, completes domestic chores, manages financial responsibilities, pursues employment, and participates in interpersonal and recreational activities. By capturing the perspective of an informant—such as a spouse, parent, sibling, or adult child—Form R2 provides objective observations of day-to-day functional performance that might otherwise be obscured by clinical interview biases, cognitive deficits, or patient lack of insight.
In clinical trials, Form R2 serves as an essential secondary or primary outcome measure to determine whether pharmacotherapeutic, psychotherapeutic, or psychosocial rehabilitation interventions improve an individual’s capacity to live independently and satisfy baseline familial and community roles. In outpatient psychiatric management and clinical social work, the instrument identifies functional deficits requiring targeted skill acquisition, occupational therapy, or social interventions. Furthermore, Form R2 is valuable for longitudinal tracking, identifying early signs of functional decline that often precede full clinical relapse and rehospitalization.
5. Psychological Construct
The core psychological construct measured by the Katz Adjustment Scale—Form R2 is social adjustment, operationalized as overt behavioral engagement in socially expected activities. In sociological and psychological literature, social adjustment is defined as the degree to which an individual successfully accommodates the normative expectations, role demands, and relational requirements of their cultural and familial environment. Rather than measuring internal cognitive structures, emotional distress, or personality traits, Form R2 measures observable behavioral competence across five primary behavioral domains:
1. Domestic and Household Responsibilities
This domain evaluates the patient’s willingness and ability to contribute functionally to the maintenance of the shared domestic environment. Items assess practical contributions such as assisting with domestic chores, preparing meals, and helping with home repairs or physical property improvements. These activities require executive planning, sustained attention, motor coordination, and prosocial motivation to support the household unit.
2. Personal Maintenance and Self-Care
Independent functioning requires maintaining basic bodily care, presentation, and personal order. Form R2 evaluates whether the individual actively looks after their personal appearance, engages in daily hygiene, and keeps themselves constructively occupied throughout the day. Deficits in this domain often indicate severe depressive withdrawal, negative symptoms of schizophrenia, or executive dysfunction.
3. Financial and Instrumental Autonomy
Higher-order social competence involves instrumental self-reliance. The scale assesses this through behaviors such as managing personal funds, contributing to the household budget, and handling retail tasks like community shopping. These items reflect an individual’s autonomy and practical cognitive capacity within the economic systems of adult life.
4. Interpersonal and Social Engagement
Social adjustment requires ongoing communication and integration within a supportive social matrix. This domain captures the frequency of conversational interaction, visiting with friends, attending social functions (such as parties or community dances), and participating in family activities. Impairment here reflects interpersonal detachment, social anhedonia, or social anxiety.
5. Civic, Leisure, and Vocational Participation
The broader sphere of community adjustment involves structured participation outside the home. Form R2 measures this through engagement in organized religious services, athletic and physical recreation, intellectual stimulation (such as reading newspapers and magazines), and holding employment. These behaviors capture reintegration into the socioeconomic and cultural life of the community.
By measuring performance across these interconnected areas, Form R2 provides a profile of whether an individual is meeting normative adult expectations within their specific community context.
6. Theoretical Framework
The theoretical architecture of the Katz Adjustment Scale is grounded in social role theory, originally formulated by sociologists such as Talcott Parsons and Robert K. Merton, combined with the principles of social psychiatry and behavioral competence models developed in the mid-twentieth century. Parsons conceptualized illness not merely as a biological aberration, but as a social state characterized by the “sick role,” wherein an individual is temporarily exempted from normative adult role obligations. Under this framework, true recovery is defined as the relinquishment of the sick role and the resumption of functional obligations within the family and community.
Katz and Lyerly translated these sociological concepts into quantifiable psychometric dimensions. They posited that an individual’s mental health status is directly reflected in their capacity to perform ordinary societal roles. The theoretical foundation of Form R2 rests on several core assumptions:
- Ecological Validity of Informant Reports: Hospital-based assessments have limited ecological validity because psychiatric institutions remove the daily demands of independent life. Relatives and cohabiting family members act as participant-observers within the natural environment, providing reliable behavioral data regarding actual role fulfillment.
- Separation of Symptoms from Social Functioning: Symptom severity and social role performance are distinct, partially orthogonal dimensions of psychiatric disorders. A patient may experience persistent auditory hallucinations or residual dysthymia while still performing household chores, maintaining personal hygiene, and managing money. Conversely, a patient in complete symptomatic remission may remain functionally dependent and socially isolated.
- Normative Community Expectations: Within any community, there is general consensus regarding baseline adult responsibilities. Form R2 measures an individual’s performance against these widely shared social expectations.
In addition, Form R2 was designed to pair with Form R3 (which measures the relative’s expectations for these same activities), allowing researchers to calculate a discrepancy score reflecting relative dissatisfaction. However, Form R2 serves independently as an objective inventory of actual behavioral performance, operationalizing social recovery in clinical and research settings.
7. Validity
The psychometric validity of the Katz Adjustment Scale—Form R2 has been evaluated through multiple empirical studies since its introduction in 1963, supporting its construct, concurrent, discriminative, and predictive validity.
Discriminative and Criterion Validity
The primary validation strategy employed by Katz and Lyerly (1963) evaluated the scale’s capacity to discriminate between clinical cohorts with varying levels of psychiatric impairment and non-clinical community controls. The authors administered the instrument across distinct cohorts: hospitalized psychiatric patients undergoing discharge preparation, discharged patients readjusting to community living, and a well-adjusted non-clinical community reference group. Statistical analyses demonstrated that the well group engaged in significantly higher rates of socially expected behaviors (substantially higher Form R2 total performance scores) compared to recovering psychiatric outpatients, who in turn scored significantly higher than individuals facing imminent relapse or rehospitalization.
Concurrent Validity with Clinical Judgments
To assess concurrent validity, Katz and Lyerly examined the relationship between relative ratings on Form R2 and independent clinical evaluations conducted by psychiatrists and clinical social workers. Point-biserial correlations and linear regression analyses between informant-reported social activity performance and clinician-rated global adjustment scales yielded correlations ranging from .67 to .79. These findings confirmed that relatives’ observations align with independent professional evaluations of patient functioning.
Construct and Predictive Validity
In subsequent clinical trials and naturalistic follow-up studies—most notably those conducted by the NIMH Collaborative Studies Group, Gerard Hogarty, and Nina Schooler—Form R2 demonstrated strong construct validity in tracking longitudinal psychiatric rehabilitation. Low baseline scores on Form R2 significantly predicted subsequent community placement failure, medication non-adherence, and rapid psychiatric rehospitalization within 12-month follow-up periods. Furthermore, Form R2 scores demonstrated sensitivity to therapeutic interventions, showing measurable increases following combined maintenance pharmacotherapy and specialized psychosocial casework, while remaining stable or declining in control conditions.
8. Reliability
The reliability of the Katz Adjustment Scale—Form R2 has been established across multiple studies evaluating internal consistency, inter-rater reliability, and longitudinal stability.
Internal Consistency
In the original psychometric analyses reported by Katz and Lyerly (1963), the internal consistency of Form R2 was calculated across diverse patient and community samples using Kuder-Richardson formulas (specifically adapted for three-point categorical/ordinal data). Reliability coefficients ranged from .41 to .87 depending on the homogeneity of the clinical subgroup under evaluation. Subsequent studies utilizing Cronbach’s alpha on normalized community and outpatient samples have yielded internal consistency coefficients consistently falling between .78 and .85. These values indicate solid item cohesion while preserving the distinct practical domains assessed across the 16 items.
Inter-Rater Reliability
Because Form R2 relies on informant reporting, evaluating inter-rater agreement between independent observers has been central to its psychometric validation. Multiple studies comparing ratings completed by different family members (e.g., both mother and father, or spouse and adult offspring) have demonstrated inter-rater correlation coefficients ranging from .64 to .78 for the total performance score. Discrepancies between raters typically stem from varying amounts of direct daily contact with the patient rather than structural item ambiguity.
Test-Retest Stability
Test-retest reliability evaluations over brief intervals (two to three weeks) among stable, non-relapsing outpatients show stability coefficients ranging from .74 to .82. These results confirm that Form R2 provides stable measurement in the absence of clinical interventions, while remaining sensitive to genuine changes in functional status following therapeutic improvements or disease exacerbations.
9. Factor Analysis
In their seminal 1963 publication, Katz and Lyerly did not conduct formal factor analysis on Form R2. Instead, they designed the scale using a rational-criterion approach, selecting 16 diverse behavioral items to provide broad coverage of socially expected activities. They treated the instrument as a unified, composite index of overall social performance.
Subsequent psychometric investigations, particularly those led by Hogarty and Katz (1971) and independent mental health services researchers in the 1970s and 1980s, conducted exploratory factor analyses (EFA) using principal component extraction with varimax and oblique rotations to explore the dimensional structure of the 16 items. These structural analyses typically identify three to four underlying dimensions:
- Factor 1: Instrumental Domestic Autonomy
This factor accounts for substantial common variance and is characterized by high loadings from items such as Prepares meals, Helps with household chores, Goes shopping, and Helps with home repairs or improvements. This factor captures practical contributions to domestic maintenance.
- Factor 2: Social and Relational Interactivity
This dimension is defined by high positive loadings from items including Visits his friends, Talks to other people, Goes to social functions like dances or parties, and Takes part in family activities. This factor reflects prosocial engagement and relational connectedness.
- Factor 3: Community and Vocational Competence
This factor is anchored by items such as Works or holds down a job, Handles his own money, Helps with the family budget, and Goes to church. These items represent complex interactions with external civic, institutional, and economic structures.
- Factor 4: Personal Maintenance and Leisure Initiation
A smaller fourth factor frequently emerges, characterized by items such as Looks after his personal appearance, Keeps himself occupied, Takes part in sports, and Reads newspapers or magazines. This factor captures basic self-care, personal initiative, and self-directed leisure.
While multi-factor solutions provide valuable clinical insight for specific rehabilitative interventions, the 16 items continue to be utilized predominantly as a unidimensional summary score representing total engagement in socially expected activities.
10. Instrument / Measurement Tool
- Instrument Name: Katz Adjustment Scale—Form R2 (KAS-R2)
- Alternative Names: Katz Adjustment Scale: Level of Performance of Socially Expected Activities (Relative Form R2); KAS Form R2
- Instrument Type: Informant-report behavioral rating inventory / observer assessment scale
- Target Population: Adult psychiatric patients (aged 18 and older) living in or transitioning to community settings (notably individuals diagnosed with schizophrenia, major mood disorders, or severe mental illness undergoing psychiatric rehabilitation)
- Informant / Rater: A relative, spouse, caregiver, or cohabiting individual with regular behavioral contact with the patient during the preceding weeks
- Administration Format: Paper-and-pencil questionnaire; adaptable to structured clinical interview or digital data capture
- Administration Time: Approximately 5 to 10 minutes
- Total Item Count: 16 items
- Item Content Domains: Domestic chores, social visitation, religious engagement, personal grooming and self-care, financial management, verbal interaction, social events, personal occupation, home maintenance, community shopping, food preparation, family activities, athletic involvement, print media consumption, and employment
- Response Scale: Authentic 3-point ordinal rating scale:
- 1 = Is not doing
- 2 = Is doing some
- 3 = Is doing regularly
- Scoring Protocol: Individual item scores are summed to generate a total performance score ranging from 16 to 48.
- Low Total Scores (16–26): Indicate severe social withdrawal, marked functional dependence, and minimal participation in socially expected adult behaviors.
- Moderate Total Scores (27–37): Reflect partial community readjustment, with inconsistent functional independence or selective participation limited to basic domestic activities.
- High Total Scores (38–48): Indicate robust community readjustment, independent self-care, active domestic and economic contribution, and normal social integration.
- Reverse-Scored Items: None. All items are positively keyed toward greater engagement in socially expected activities.
11. Permissions & Fee and Test Year
The Katz Adjustment Scale—Form R2 was published in 1963 by Martin M. Katz and Samuel B. Lyerly in Psychological Reports. The research was supported in part by the National Institute of Mental Health (NIMH) Psychopharmacology Service Center, a United States federal agency, alongside the Human Ecology Fund. Under contemporary U.S. copyright provisions and open-access scientific conventions governing mid-twentieth-century federal research instruments, the scale items and structure are available within the academic public domain for scientific, clinical, and educational research purposes.
No commercial licensing fees, developer royalties, or proprietary certifications are required to administer, score, or adapt the KAS-R2 for clinical practice or academic research. However, clinical researchers utilizing the instrument must credit the original authors and cite the seminal 1963 publication in resulting reports, presentations, and publications. Institutional review boards (IRBs) and researchers should ensure informed consent procedures accommodate both the patient and the informant completing the behavioral assessment.
12. References
Hogarty, G. E., & Katz, M. M. (1971). Norms of adjustment and social behavior in the community: Mental patients and normal controls. Journal of Abnormal Psychology, 77(3), 335–340. https://doi.org/10.1037/h0031018
Katz, M. M., & Lyerly, S. B. (1963). Methods for measuring adjustment and social behavior in the community: I. Rationale, description, discriminative validity and scale development. Psychological Reports, 13(2), 503–535. https://doi.org/10.2466/pr0.1963.13.2.503
Merton, R. K. (1957). Social theory and social structure. Free Press.
Parsons, T. (1951). The social system. Free Press.
Schooler, N. R., Hogarty, G. E., & Weissman, M. M. (1979). Social Adjustment Scale II (SAS II). In W. A. Hargreaves, C. C. Attkisson, & J. E. Sorensen (Eds.), Resource materials for community mental health program evaluators (DHEW Publication No. ADM 79-328, pp. 290–303). U.S. Government Printing Office.
Weissman, M. M. (1975). The assessment of social adjustment: A review of techniques. Archives of General Psychiatry, 32(3), 357–365. https://doi.org/10.1001/archpsyc.1975.01760210091006