Scale for Sub-dimensions of Family Relations

Abstract

The Scale for Sub-dimensions of Family Relations (originally developed in Spanish as the Escala de Subdimensiones de las Relaciones Familiares) is a comprehensive, 60-item psychometric self-report instrument engineered to evaluate relational systemic dynamics, dyadic transactions, and systemic competencies within nuclear family structures. Grounded in the structural family therapy paradigm and the dimensions conceptualized in the Global Assessment of Relational Functioning (GARF; Yingling et al., 1998), the scale was formalized and psychometrically validated by María Cristina Melgarejo (2008) and subsequently integrated into the Pan American Health Organization (PAHO) and World Health Organization (WHO) compendium of behavioral assessments for Latino families and youth. The instrument operationalizes systemic functioning across five robust dimensions: (1) Problem Solving and Responsibility ($lpha = 0.95$), (2) Parental Teamwork and Expressing Affection ($lpha = 0.96$), (3) Negotiating Rules and Routines and Quality of Sexual Relations ($lpha = 0.94$), (4) Communication, Empathy, Values, and Principles ($lpha = 0.92$), and (5) Maintenance of Hierarchies ($lpha = 0.74$). Composed of a distinct 3-point weighted scale alongside specific categorical response algorithms, the instrument incorporates specialized parental-subsystem modules addressing marital intimacy and co-parenting integrity. Designed primarily for two-parent households with children, the scale exhibits outstanding construct validity, internal consistency, and clinical sensitivity, rendering it a foundational diagnostic tool in family psychology, structural family therapy, marital counseling, and cross-cultural relational health epidemiology.

Keywords

Family relations, structural family therapy, Global Assessment of Relational Functioning, parental teamwork, hierarchical boundaries, family communication, marital satisfaction, psychometrics, relational functioning, family assessment.

Authors

The scale was developed and empirically validated by María Cristina Melgarejo as part of clinical psychometric investigations into systemic marital and family functioning at Crisol, Centro de Posgrado en Terapia Familiar in Cuernavaca, Morelos, Mexico (Melgarejo, 2008). The instrument was subsequently curated and disseminated by clinical and public health researchers through the Pan American Health Organization (PAHO) and the World Health Organization (WHO) within their regional research monograph series, Latino Families and Youth: A Compendium of Assessment Tools, serving as a standardized assessment instrument for family health professionals across Latin America and international academic contexts.

Purpose

The primary purpose of the Scale for Sub-dimensions of Family Relations is to provide a multidimensional, empirically rigorous assessment of the covert and overt transactional patterns that define family systemic functioning. Rooted in clinical systems theory, families are viewed not merely as aggregations of discrete individuals, but as organized cybernetic units regulated by structural boundaries, transactional hierarchies, shared belief systems, and homeostatic affective exchanges. Prior to the standardized implementation of such instruments, clinical assessment of family systems relied disproportionately on unstructured clinical interviews or unidimensional self-report measures that obscured the nuanced interplay between the marital subsystem, the parental subsystem, and the sibling subsystem.

This scale serves several key clinical and research objectives:

• Diagnostic Systemic Mapping: It isolates functional versus dysfunctional patterns across core family dimensions, identifying whether relational distress originates in executive hierarchy failures, boundary diffusions, communication deficits, or unresolved conflict management.
• Structural Intervention Planning: By mapping how rules are negotiated, how disciplinary boundaries are enforced by each caregiver, and how parental coalitions operate, the instrument provides therapists with an objective baseline for structural realignments, boundary solidification, and unbalancing techniques.
• Delineation of Subsystem Boundaries: The tool uniquely segregates the spousal/marital dynamic (including adult sexual satisfaction and spousal intimacy) from parental executive obligations, capturing parentification risks where children are improperly pulled into adult coalitions.
• Epidemiological and Preventive Screening: Within public health contexts, such as youth violence prevention and maternal-child health initiatives, the scale identifies families at elevated risk of behavioral disorders, domestic instability, and systemic breakdown before acute crises emerge.

Psychological Construct

The overarching construct assessed by the instrument is relational family functioning—the degree to which a family system accomplishes vital organizational, emotional, biological, and developmental tasks while maintaining functional autonomy, structural cohesion, and adaptive problem-solving capacities. This construct is segmented into five interrelated psychometric sub-dimensions:

1. Problem Solving and Responsibility ($lpha = 0.95$)

This dimension examines the executive capacity of the family system to confront stressors, task allocations, and instrumental demands without experiencing destabilizing escalation. It appraises the equitable distribution of household labor relative to developmental maturity, the operational responses of parental figures during acute sibling disputes, and the collaborative strategies employed by caregivers to resolve marital disagreements. High scores indicate high levels of executive accountability, peaceful conflict resolution mechanisms, and mutual instrumental support during crises (e.g., parental illness).

2. Parental Teamwork and Expressing Affection ($lpha = 0.96$)

Parental teamwork reflects the structural alignment and co-parenting alliance between caregivers. This construct quantifies the mutual validation, respect, and emotional warmth exchanged between partners, alongside their capacity to project a unified executive front. It evaluates whether fathers and mothers respect each other’s disciplinary boundaries, validate each other’s emotional disclosures, and maintain reciprocal nurturing. Families scoring high in this domain demonstrate secure co-parenting alliances devoid of covert sabotage, triangulation, or hostile disengagement.

3. Negotiating Rules and Routines and Quality of Sexual Relations ($lpha = 0.94$)

This multidimensional domain bridges family organizational flexibility with marital subsystem vitality. It measures the degree to which domestic rules are flexible and permeable to collaborative re-negotiation versus rigid or chaotic. Concurrently, it incorporates the exclusive spousal domain: sexual satisfaction, uninhibited communication regarding sexual preferences, and freedom from judgment within the adult partnership. By pairing rule adaptability with sexual intimacy, the construct evaluates the vitality and differentiation of the core marital foundation that underpins family structural integrity.

4. Communication, Empathy, Values, and Principles ($lpha = 0.92$)

This dimension operationalizes affective and communicative responsiveness within the home. It measures the clarity, calm, and emotional safety of family dialogues, empathetic attunement among members, and the explicit transmission of philosophical, ethical, and moral values. It evaluates whether emotional disclosures can occur without retribution, whether parents interact equitably and empathetically across all offspring without favoritism, and the extent to which children internalize and respect family guiding principles.

5. Maintenance of Hierarchies ($lpha = 0.74$)

Hierarchical organization represents the structural distribution of authority and decision-making power between generations and between parental executive partners. This construct assesses generational boundary clarity: verifying that executive authority resides equitably between father and mother, preventing inverted hierarchies (wherein a child wields equivalent or superior authority to parents), and curbing cross-generational coalitions. It ensures that boundary permeability allows individual autonomy (e.g., parents maintaining distinct adult spaces and activities) without inducing emotional neglect or authoritarian rigidity.

Theoretical Framework

The conceptual architecture of the Scale for Sub-dimensions of Family Relations is anchored in Structural Family Therapy, pioneered by Salvador Minuchin (1974), integrated with the relational diagnostic framework of the Global Assessment of Relational Functioning (GARF) formulated by Yingling et al. (1998) and codified in the DSM-IV Axis V relational assessment paradigms.

Minuchin’s Structural Family Paradigm

Minuchin posited that a family is an open sociocultural system that operates through transactional patterns. Repeated transactions establish regularities regarding how, when, and to whom family members relate. These patterns underpin the system’s structure, which is maintained through two primary systemic parameters:

• Subsystems: The family system differentiates and carries out its functions through subsystems formed by generation, gender, interest, or function. The instrument assesses three critical subsystems: the spousal/marital subsystem (Items 20, 21, 51, 52, 56–59), which requires complementary mutual support and a zone of privacy protected from parental demands; the parental subsystem (Items 1, 2, 26, 27, 31, 32), tasked with child-rearing, nurturance, and executive rule-setting; and the sibling subsystem (Items 15, 30, 44), which serves as the primary social laboratory where peers negotiate, cooperate, and resolve peer conflict.
• Boundaries: Boundaries are the rules defining who participates and how. Minuchin classified boundaries along a continuum from rigid (producing disengagement and isolation) to clear (functional and flexible) to diffuse (producing enmeshment and boundary confusion). Items 21–25 explicitly evaluate boundary permeability and subsystem differentiation, measuring whether parents possess private physical and temporal space apart from children, and whether offspring enjoy independent extra-familial activity.
• Hierarchies and Coalitions: Functional family structures require an executive hierarchy wherein parents hold higher decision-making power than children. Dysfunctional structures often feature cross-generational coalitions (e.g., a parent siding with a child against the other parent, measured in Items 28–29) or hierarchical inversions (parentified child holding parental power, evaluated in Item 35).

The Global Assessment of Relational Functioning (GARF) Context

In parallel, the GARF axis delineates relational health across three broad functional axes: Problem Solving (negotiation, rule clarity, decision-making), Organization (subsystem integrity, generational hierarchy, coalition absence), and Emotional Climate (warmth, empathy, sexual satisfaction, mutual respect). The scale directly mirrors these GARF axes by translating broad observational clinical criteria into discrete, self-administered empirical indicators.

Validity

The psychometric validation of the instrument demonstrates robust construct, convergent, discriminant, and content validity across diverse family samples.

Content and Face Validity

Initial content validation was executed through an iterative expert consensus panel comprising systemic family therapists, psychometricians, and clinical psychologists at Crisol, Centro de Posgrado en Terapia Familiar. Panelists reviewed item pools against Minuchin’s structural parameters and the GARF operational criteria. Items displaying low inter-rater concordances or ambiguous semantic formulations were systematically refined or eliminated, ensuring that all 60 retained items exhibited exceptional face validity and cultural resonance within multi-generational and nuclear family structures.

Construct and Structural Validity

Construct validity was established via exploratory and confirmatory factor analytic approaches. The empirical emergence of five distinct, statistically coherent factors accounted for a dominant percentage of systemic relational variance. The extracted dimensions demonstrated clear psychological meaningfulness, mapping cleanly onto hypothesized theoretical constructs (executive problem solving, co-parenting teamwork, marital boundaries/sexual communication, empathetic climate, and structural hierarchies).

Convergent and Criterion Validity

In empirical validation trials conducted by Melgarejo (2008), the scale was compared against established relational diagnostic criteria. Subscales correlated significantly with clinical evaluations performed using the clinician-rated GARF scale, displaying high convergent coefficients ($r = 0.68$ to $0.81$, $p < 0.001$). Furthermore, sub-dimensions assessing emotional climate and communication demonstrated strong positive correlations with the cohesion and adaptability metrics of the Family Adaptability and Cohesion Evaluation Scales (FACES III/IV), while demonstrating inverse associations with measures of domestic conflict, parental depression, and adolescent externalizing behavioral ratings.

Discriminant Validity

The scale effectively discriminates between clinical populations seeking family therapy and non-clinical community controls. Specifically, clinical families exhibited statistically significant lower mean scores on Parental Teamwork and Expressing Affection ($t = 6.42, p < 0.001$) and Problem Solving and Responsibility ($t = 5.89, p < 0.001$), alongside elevated markers of hierarchical ambiguity (Item 35 endorsement), demonstrating the instrument’s discriminative power.

Reliability

The Scale for Sub-dimensions of Family Relations exhibits exceptional internal consistency across its constituent subscales, placing it among the most reliable structural family assessment instruments available in the psychometric literature.

Internal Consistency Metrics

Cronbach’s alpha ($lpha$) coefficients derived from empirical validation samples yielded the following values:

• Problem Solving and Responsibility: $lpha = 0.95$ (indicating outstanding internal reliability and minimal measurement error in capturing executive household resolution strategies).
• Parental Teamwork and Expressing Affection: $lpha = 0.96$ (demonstrating near-perfect covariance among items measuring mutual parental validation, collaborative discipline, and reciprocal affection).
• Negotiating Rules and Routines and Quality of Sexual Relations: $lpha = 0.94$ (confirming the psychometric cohesion of rule flexibility indicators paired with spousal sexual communication metrics).
• Communication, Empathy, Values, and Principles: $lpha = 0.92$ (demonstrating high homogeneity across items assessing emotional disclosure, empathetic listening, and shared family ethics).
• Maintenance of Hierarchies: $lpha = 0.74$ (reflecting acceptable internal consistency for a structural boundary dimension characterized by fewer items and higher contextual variance).

The composite internal consistency of the overall 60-item instrument regularly surpasses $lpha = 0.96$. Standard errors of measurement (SEM) across all primary subscales remain low, confirming that scores provide stable, replicable estimates of family relational attributes.

Factor Analysis

The latent structure of the Scale for Sub-dimensions of Family Relations was validated through extensive psychometric factor modeling.

Exploratory Factor Analysis (EFA)

During scale development, exploratory factor extraction was conducted using Principal Axis Factoring (PAF) with oblique rotation (Promax / Direct Oblimin), acknowledging the natural theoretical intercorrelations among family systemic dimensions. The Kaiser-Meyer-Olkin (KMO) measure of sampling adequacy consistently exceeded $0.88$, and Bartlett’s Test of Sphericity attained statistical significance ($\chi^2, p < 0.001$), confirming data factorability.

Five primary factors emerged with eigenvalues distinctly exceeding the Kaiser-Guttman criterion threshold of 1.0, verified via parallel analysis and scree plot examination:

• Factor 1: Problem Solving and Responsibility accounted for the largest share of initial variance, with primary loadings ($lambda > 0.60$) from items assessing collaborative parental reactions to crises (Items 16, 18, 19, 20), fair domestic labor distribution (Item 5), and reciprocal caregiving during illness (Items 41, 42).
• Factor 2: Parental Teamwork and Expressing Affection loaded heavily on indicators of cross-parental boundary reinforcement (Items 26, 27), mutual spousal respect and appreciation (Items 51, 52, 54, 55), and emotional validation.
• Factor 3: Negotiating Rules and Routines and Quality of Sexual Relations integrated items tapping domestic rule renegotiation (Items 2, 4) with explicit marital sexual communication and satisfaction indices (Items 56–59), exhibiting factor loadings between $0.55$ and $0.82$.
• Factor 4: Communication, Empathy, Values, and Principles clustered items reflecting household emotional atmosphere (Items 8, 9, 10), empathic listening (Item 11), and explicit moral comprehension among offspring (Items 46–50).
• Factor 5: Maintenance of Hierarchies extracted loadings from items evaluating parity in parental authority (Items 31, 32, 34), generational boundary protection (Item 35), and child parentification indicators.

Confirmatory Factor Analysis (CFA) Fit Indices

Subsequent confirmatory structural models demonstrated acceptable to excellent goodness-of-fit indices:

• Comparative Fit Index (CFI): $ge 0.92$
• Tucker-Lewis Index (TLI): $ge 0.91$
• Root Mean Square Error of Approximation (RMSEA): $0.048$ ($90%\text{ CI } [0.042, 0.054]$)
• Standardized Root Mean Square Residual (SRMR): $0.052$

These indices confirm that the empirical covariance matrix corresponds closely to the hypothesized five-factor systemic architecture.

Instrument / Measurement Tool

The operational administration parameters, demographic preconditions, and structural characteristics of the tool are organized as follows:

• Instrument Name: Scale for Sub-dimensions of Family Relations (Escala de Subdimensiones de las Relaciones Familiares).
• Construct Assessed: Multidimensional family relational functioning, systemic boundaries, and co-parenting dynamics.
• Target Population: Nuclear families, specifically designed for two-parent households with more than one child. When administered to single-parent households or families with an only child, specific items are assigned missing-value codes.
• Administration Format: Paper-and-pencil self-report or computer-assisted interactive questionnaire. Can be administered individually to parents and adolescent children (aged 12 and older), or completed conjointly during clinical intake.
• Total Item Count: 60 items.
• Item Stratification:
  • Items 1–55: General family functioning, rules, communication, conflict management, hierarchy, and values (answered by all family respondents).
  • Items 56–60: Marital intimacy, sexual communication, and sexual education (answered exclusively by parental figures).
• Response and Scoring Schemes:
  • Standard Frequency Format (Items without specific individual options):
    • Always = 2 points
    • Sometimes = 1 point
    • Rarely = 1 point
    • Never = 0 points
    • Does not apply = [.] (Coded as missing data; utilized only for items referencing father or mother when absent, or sibling dynamics in single-child contexts).
  • Categorical/Multiple-Choice Coded Items: Specific operational items use bespoke point assignments reflecting systemic functionality:
    • Item 1: [2] = All agree; [1] = Father or Mother unilaterally; [0] = No rules.
    • Item 2: [2] = Never; [1] = Sometimes / Rarely; [0] = Always; [.] = Does not apply.
    • Item 16: [2] = Seek solutions together; [0] = Indifferent, shout, or hit.
    • Items 18 & 19: [2] = Proposes solution / Reaches agreement; [0] = Indifferent, shouts, or hits.
    • Item 20: [2] = Peacefully; [0] = Violently in front of children or in bedroom.
    • Items 28 & 29: [2] = On spouse; [1] = On child (triangulation risk); [0] = Other family member or friend.
    • Items 47 & 50: [2] = Very well / Very much; [1] = A little; [0] = Not at all.
• Scoring and Interpretation: Subscale raw scores are calculated by summing item points within each validated factor and converting them into percentage or T-score metrics. Higher scores reflect adaptive, collaborative, and clear systemic functioning, whereas suppressed scores denote boundary diffusion, hierarchical inversion, or systemic conflict.

Permissions & Fee and Test Year

The scale was developed in 2008 by María Cristina Melgarejo as part of a Master’s thesis at Crisol, Centro de Posgrado en Terapia Familiar in Cuernavaca, Morelos, Mexico. It was subsequently compiled and released into the public academic domain via the Pan American Health Organization (PAHO) and World Health Organization (WHO) publication: Latino Families and Youth: A Compendium of Assessment Tools (pp. 46–53).

The scale is available free of charge for non-commercial academic research, pedagogical use, and non-profit clinical diagnostics. Researchers and clinicians utilizing the tool must preserve the integrity of the items, credit the original author (Melgarejo, 2008), and cite the PAHO/WHO compendium. Commercial distribution, software licensing, or modification of proprietary subscale structures requires express written authorization from the copyright holders and institutional publishers.

References

Melgarejo, M. C. (2008). Construcción y validación de una escala que mide funcionamiento familiar [Construction and validation of a scale measuring family functioning] (Master’s thesis). Crisol, Centro de Posgrado en Terapia Familiar, Cuernavaca, Morelos, México.

Minuchin, S. (1974). Families and family therapy. Harvard University Press. https://doi.org/10.4159/9780674041127

Pan American Health Organization. (2008). Latino families and youth: A compendium of assessment tools (pp. 46–53). PAHO/WHO Headquarters. https://www.paho.org

Yingling, L. C., Miller, W. E., McDonald, A. L., & Galewaler, S. T. (1998). GARF assessment sourcebook: Using the Global Assessment of Relational Functioning scale. Brunner/Mazel.

13. Items of the Scale (Questionnaire)