Relationship Structures Questionnaire (ECR-RS)

1. Abstract

The Experiences in Close Relationships-Relationship Structures Questionnaire (ECR-RS) is a standardized psychometric self-report instrument developed by R. Chris Fraley and colleagues (2011) to assess individual differences in attachment styles—specifically attachment-related avoidance and attachment-related anxiety—across multiple distinct relational domains. Built upon the theoretical and measurement foundation of the 36-item Experiences in Close Relationships-Revised (ECR-R) questionnaire, the ECR-RS condenses the evaluation of adult attachment into an efficient 9-item protocol that can be systematically completed across specific target figures: mother (or maternal figure), father (or paternal figure), current or former romantic partner, and best friend (or close peers), as well as generalized close relationships or psychotherapeutic alliances.

Each target relationship is evaluated on a 7-point Likert scale ranging from 1 (Strongly disagree) to 7 (Strongly agree). Across its 9 items, six assess attachment avoidance (evaluating defensive self-reliance, proximity seeking, and emotional self-disclosure, with items 1 through 4 reverse-scored) and three assess attachment anxiety (evaluating fears of rejection, abandonment, and unreciprocated affection). Extensive psychometric validation demonstrates robust construct validity, high internal consistency (Cronbach’s α typically ranging from .80 to .92 for avoidance and .85 to .91 for anxiety across domains), strong test-retest stability, and distinct confirmatory factor structures that support both domain-specific relational variance and a hierarchically organized global attachment orientation. The ECR-RS represents a foundational measurement tool in clinical, social, developmental, and personality psychology, offering clinicians and researchers an empirical framework to disaggregate relationship-specific working models from broad internal working models.

2. Keywords

ECR-RS, Experiences in Close Relationships, Relationship Structures Questionnaire, adult attachment, attachment anxiety, attachment avoidance, internal working models, relational security, dyadic assessment, psychometrics, relational domains, R. Chris Fraley

3. Authors

The Relationship Structures Questionnaire was formulated, refined, and psychometrically validated by a collaborative research team led by R. Chris Fraley, Ph.D.

• R. Chris Fraley, Ph.D. — Professor of Psychology, Department of Psychology, University of Illinois at Urbana-Champaign, Urbana, IL, United States. Correspondence concerning the instrument is historically directed via the Department of Psychology, University of Illinois at Urbana-Champaign, 603 East Daniel Street, Champaign, IL 61820. Email: [email protected].
• Marie E. Heffernan, Ph.D. — Department of Psychology, University of Illinois at Urbana-Champaign.
• Amanda M. Vicary, Ph.D. — Department of Psychology, Illinois Wesleyan University, Bloomington, IL.
• Claudia C. Brumbaugh, Ph.D. — Department of Psychology, Queens College, City University of New York (CUNY), Flushing, NY.

4. Purpose

For several decades, the empirical operationalization of adult attachment leaned heavily toward assessing generalized, trait-level orientations. Landmark instruments such as the Adult Attachment Interview (AAI; George, Kaplan, & Main, 1985), the Hazan and Shaver (1987) categorical paradigms, and the foundational Experiences in Close Relationships scale (ECR; Brennan, Clark, & Shaver, 1998; ECR-R; Fraley, Waller, & Brennan, 2000) predominantly asked respondents to characterize how they feel in “romantic relationships in general” or “close relationships overall.” While this global assessment strategy yielded indispensable insights into the broad personality correlates of interpersonal functioning, it failed to capture a central tenet of Bowlby’s foundational attachment theory: that human beings develop and maintain distinct, multiple internal working models tailored to specific attachment figures throughout the lifespan.

The primary purpose of the ECR-RS is to resolve this methodological limitation by providing a concise, psychometrically rigorous, and flexible instrument designed to evaluate attachment insecurity within concrete relational domains without inducing respondent fatigue. Measuring attachment across mother, father, romantic partner, and best friend using 36 items each would necessitate answering 144 detailed questions, creating substantial measurement artifacts, boredom, and response attrition. The ECR-RS addresses this challenge by selecting the 9 most psychometrically informative, cross-target invariant items from the ECR-R item pool, balancing assessment efficiency with measurement precision.

In research contexts, the ECR-RS allows investigators to tease apart variance attributable to a person’s generalized attachment schema from target-specific variance. For example, structural equation modeling and hierarchical linear modeling have demonstrated that an individual might possess a highly avoidant orientation toward a dismissive paternal figure while simultaneously maintaining a secure attachment toward a long-term romantic partner. Understanding the degree of concordance across these models enables researchers to study attachment transmission, relationship transitions, social network dynamics, and dyadic interdependence.

In clinical practice, the ECR-RS serves as an invaluable diagnostic and therapeutic evaluation tool. Clinicians use the instrument to chart a patient’s relational profile across developmental milestones (parental bonds) and adult attachments (spouses, partners, and peer confidants). Furthermore, the scale can be adapted to evaluate the therapeutic relationship itself, allowing therapists to systematically monitor client transference, attachment security toward the clinician, ruptures in the working alliance, and longitudinal movement toward an “earned-secure” attachment orientation over the course of psychotherapy.

5. Psychological Construct

The Relationship Structures Questionnaire is grounded in the dimensional paradigm of adult attachment, which conceptualizes interpersonal insecurity along two orthogonal, continuous dimensions: Attachment Avoidance and Attachment Anxiety. Low scores on both dimensions correspond to relational security, whereas elevations on one or both dimensions delineate characteristic secondary attachment strategies.

Attachment Avoidance

Attachment avoidance reflects the extent to which an individual distrusts relationship partners’ goodwill, relies defensively on self-reliance, and strives to maintain psychological and emotional distance. Individuals scoring high in avoidance adopt deactivating strategies:

• Compulsive self-reliance: Avoidant individuals experience discomfort when needing assistance, preferring to handle distress autonomously rather than seeking comfort or advice (operationalized by Item 1: “It helps to turn to this person in times of need” [reverse-scored] and Item 4: “I find it easy to depend on this person” [reverse-scored]).
• Inhibition of self-disclosure: High avoidance is characterized by reluctance to reveal vulnerabilities, emotions, or personal dilemmas (operationalized by Item 2: “I usually discuss my problems and concerns with this person” [reverse-scored], Item 3: “I talk things over with this person” [reverse-scored], Item 5: “I don’t feel comfortable opening up to this person”, and Item 6: “I prefer not to show this person how I feel deep down”).
• Defensive suppression: When threat or emotional distress is activated, individuals high in avoidance suppress attachment-related thoughts and maintain emotional equilibrium through cognitive compartmentalization and interpersonal detachment.

Attachment Anxiety

Attachment anxiety reflects the degree to which an individual worries about whether an attachment figure is accessible, emotionally invested, and responsive. Individuals scoring high in attachment anxiety utilize hyperactivating strategies:

• Vigilance regarding abandonment and emotional distance: Anxious individuals constantly monitor their relational partner for indicators of physical or psychological disengagement (operationalized by Item 8: “I’m afraid that this person may abandon me”).
• Doubts regarding partner valuation: Elevated anxiety is marked by chronic uncertainty regarding personal worthiness of love and care (operationalized by Item 7: “I often worry that this person doesn’t really care for me”).
• Perceived unreciprocated investment: High attachment anxiety involves asymmetrical feelings of emotional intensity and fear that one’s deep attachment exceeds that of the other person (operationalized by Item 9: “I worry that this person won’t care about me as much as I care about him or her”).

The Four Relational Quadrants

By crossing the two continuous dimensions of avoidance and anxiety, individual attachment representations within any targeted relationship can be organized into four distinct prototype quadrants:

6. Theoretical Framework

The theoretical bedrock of the ECR-RS is John Bowlby’s (1969, 1973, 1980) ethological attachment theory, later expanded into adulthood by Mary Ainsworth, Cindy Hazan, Phillip Shaver, and Kelly Brennan. Bowlby posited that human infants possess an innate psychobiological behavioral system designed to maintain proximity to primary caregivers (attachment figures) to secure protection from environmental hazards.

Central to this paradigm are Internal Working Models (IWMs): cognitive-affective representations of the self and significant others constructed out of repeated relational interactions across infancy and childhood. These internal working models are comprised of two interconnected schemas:

1. Model of Self: The cognitive representation of one’s own worthiness, agency, and competence, which dictates the level of attachment anxiety.
2. Model of Other: The cognitive representation of whether relational partners are trustworthy, responsive, and safe, which dictates the level of attachment avoidance.

While early adult attachment models assumed that an individual possessed a singular, monolithic internal working model, contemporary cognitive and developmental perspectives (e.g., Collins & Read, 1994; Baldwin et al., 1996; Fraley et al., 2011) propose a hierarchical architecture of attachment representations. In this hierarchical model, an overarching, generalized attachment representation sits at the apex of the cognitive network. Beneath this generalized layer reside domain-specific representations (e.g., attachment toward family members versus romantic partners versus friends), which in turn subsume target-specific models (e.g., Mother, Father, Current Partner, Best Friend).

The theoretical contribution of Fraley et al. (2011) lies in empirically demonstrating that although a generalized latent attachment style exerts a top-down influence across close relationships, target-specific experiences generate substantial unique variance. For example, parental relationships often demonstrate higher stability and lower anxiety than romantic relationships, whereas romantic attachments typically exhibit higher levels of both intimacy-seeking and rejection-related vulnerability. The ECR-RS provides the empirical architecture necessary to operationalize this theoretical hierarchy directly.

7. Validity

The psychometric validity of the ECR-RS has been thoroughly examined across diverse populations, clinical cohorts, and cross-cultural adaptations.

Construct and Structural Validity

In the seminal validation studies conducted by Fraley et al. (2011) involving over 21,000 adult participants sampled via online portals and college cohorts, structural equation modeling supported the two-dimensional model across all target relationships (Mother, Father, Partner, and Friend). The correlation between Avoidance and Anxiety across domains remained low to moderate (r values typically between .15 and .35), confirming that these two dimensions represent distinct psychological constructs rather than opposite poles of a single continuum.

Convergent and Concurrent Validity

The ECR-RS exhibits robust convergent validity when compared against parent instruments and alternative attachment metrics:

• Parent ECR and ECR-R: Romantic avoidance and romantic anxiety measured via the ECR-RS correlate strongly with the full 36-item ECR-R (convergent r > .85 to .92 for both subscales), demonstrating that trimming the scale to 9 items sacrifices negligible measurement information.
• Relationship Satisfaction and Dyadic Functioning: Higher scores on romantic avoidance and romantic anxiety measured by the ECR-RS strongly predict lower dyadic satisfaction, poorer conflict resolution tactics, and reduced subjective well-being (correlations ranging from r = -.35 to -.55 on the Dyadic Adjustment Scale).
• Parental Caregiving History: Avoidance and anxiety toward mother and father show substantial convergent associations with retrospective assessments of parental warmth, coldness, and overprotection evaluated via the Parental Bonding Instrument (PBI).

Discriminant and Domain-Specific Validity

Variance partitioning methods (e.g., multitrait-multimethod matrices and multilevel modeling) confirm that while roughly 30% to 40% of variance across the ECR-RS subscales is attributable to a general, shared attachment factor, the remaining 60% to 70% reflects target-specific variance. Furthermore, discriminant validity tests show that partner-specific avoidance and anxiety correlate weakly with general personality constructs such as Neuroticism and Extraversion from the Big Five Inventory (BFI), demonstrating that the ECR-RS measures relational working models rather than broad temperament or affective distress.

8. Reliability

The ECR-RS displays exceptional internal consistency and temporal reliability across multiple independent empirical investigations.

Internal Consistency

Across validation cohorts in Fraley et al. (2011) and subsequent independent replications (e.g., Moreira et al., 2015; Feddern et al., 2020), Cronbach’s α and McDonald’s ω coefficients remain consistently high across all target figures:

• Mother Domain: Avoidance subscale α = .87 – .92; Anxiety subscale α = .87 – .91.
• Father Domain: Avoidance subscale α = .88 – .93; Anxiety subscale α = .86 – .90.
• Romantic Partner Domain: Avoidance subscale α = .80 – .88; Anxiety subscale α = .85 – .90.
• Best Friend Domain: Avoidance subscale α = .82 – .89; Anxiety subscale α = .83 – .88.
• Global / Composite Insecurity: When aggregating items across domains to calculate generalized avoidance and anxiety, internal consistency coefficients typically exceed .90.

Test-Retest Stability

Longitudinal studies evaluating temporal stability across intervals ranging from 30 days to over one year show substantial stability:

• Short-Term Stability (4 to 6 weeks): Test-retest correlation coefficients range between r = .78 and .86 for both avoidance and anxiety across parental and peer domains.
• Long-Term Stability (12 to 24 months): Longitudinal stability coefficients for parental attachment remain elevated (r = .65 to .75), reflecting the crystallized nature of early caregiver models. Romantic attachment stability correlates moderately to highly (r = .55 to .70), demonstrating sensitivity to real-world relational changes (e.g., relationship initiation, dissolution, or marriage).

9. Factor Analysis

The latent structure of the ECR-RS has been rigorously investigated using both Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA), as well as modern Item Response Theory (IRT) parameterization.

Confirmatory Factor Analysis (CFA)

CFA models tested across different target domains systematically support a two-factor correlated structure over a single-factor unidimensional model. Standard fit indices across validation samples demonstrate excellent model fit:

• Comparative Fit Index (CFI): .96 to .99
• Tucker-Lewis Index (TLI): .95 to .98
• Root Mean Square Error of Approximation (RMSEA): .042 to .065 (with 90% confidence intervals < .080)
• Standardized Root Mean Square Residual (SRMR): .028 to .045

Factor Loadings and Latent Parameters

Standardized factor loadings on the latent Avoidance and Anxiety dimensions are consistently strong across domains:

Measurement Invariance

Testing for measurement invariance has verified metric and scalar invariance across gender groups and target relational domains. This guarantees that variations in scores reflect authentic differences in attachment orientation rather than differential item functioning or linguistic artifacts.

10. Instrument / Measurement Tool

• Test Name: Experiences in Close Relationships-Relationship Structures Questionnaire (ECR-RS)
• Alternative Names: Relationship Structures Questionnaire; ECR-RS 9-Item Protocol
• Constructs Measured: Attachment Avoidance and Attachment Anxiety in adult relationships
• Target Relational Domains: Mother (m), Father (fa), Romantic Partner (p), Close Friend (fr), and optionally Psychotherapist (th) or General Relationships (gen)
• Item Count: 9 core items evaluated per target relationship figure (standard 4-target administration = 36 total responses; single-target or general administration = 9 total responses)
• Administration Format: Self-report questionnaire; paper-and-pencil or computerized web-based administration
• Completion Time: Approximately 2 to 4 minutes for a single relationship domain; 8 to 12 minutes for the full 4-target assessment
• Response Scale: 7-point Likert scale (1 = Strongly disagree, 2 = Disagree, 3 = Slightly disagree, 4 = Neutral / Mixed, 5 = Slightly agree, 6 = Agree, 7 = Strongly agree)
• Scoring Rules:
  • Reverse Scoring: Items 1, 2, 3, and 4 are reverse scored. Reverse scoring is calculated using the formula: Score_Reversed = 8 - Original_Score.
  • Avoidance Subscale Calculation: Compute the arithmetic mean of items 1 through 6: Avoidance = [Item 1(R) + Item 2(R) + Item 3(R) + Item 4(R) + Item 5 + Item 6] / 6.
  • Anxiety Subscale Calculation: Compute the arithmetic mean of items 7 through 9: Anxiety = [Item 7 + Item 8 + Item 9] / 3.
  • Domain-Specific Scoring: Calculate separate Avoidance and Anxiety mean scores for each evaluated target (e.g., Mother Avoidance, Mother Anxiety; Partner Avoidance, Partner Anxiety).
  • Global Attachment Scoring: If assessing generalized attachment orientation, average the avoidance and anxiety subscale scores across all completed target figures.

11. Permissions & Fee and Test Year

The Relationship Structures Questionnaire (ECR-RS) was originally published in 2011 by R. Chris Fraley, Marie E. Heffernan, Amanda M. Vicary, and Claudia C. Brumbaugh in the journal Psychological Assessment (American Psychological Association). In alignment with open-science principles, the authors placed the ECR-RS in the public domain for academic, scientific, and non-commercial clinical use.

No licensing fees, commercial royalties, or formal institutional permissions are required to utilize, adapt, or administer the ECR-RS for non-commercial research or diagnostic assessment purposes. Scoring protocols, questionnaire templates, and computerized survey scripts are maintained and freely accessible via Dr. R. Chris Fraley’s laboratory website at the University of Illinois at Urbana-Champaign. Researchers and clinicians utilizing the scale are requested to cite the original 2011 validation article in all resulting publications and scientific reports.

12. References

• Ainsworth, M. D. S., Blehar, M. C., Waters, E., & Wall, S. (1978). Patterns of attachment: A psychological study of the strange situation. Lawrence Erlbaum Associates.
• Baldwin, M. W., Keelan, J. P. R., Fehr, B., Enns, V., & Koh-Rangarajoo, E. (1996). Social-cognitive conceptualization of attachment working models: Availability and accessibility of attachment-related knowledge. Journal of Personality and Social Psychology, 71(1), 94–109. https://doi.org/10.1037/0022-3514.71.1.94
• Bowlby, J. (1969). Attachment and loss: Vol. 1. Attachment. Basic Books.
• Bowlby, J. (1973). Attachment and loss: Vol. 2. Separation: Anxiety and anger. Basic Books.
• Bowlby, J. (1980). Attachment and loss: Vol. 3. Loss: Sadness and depression. Basic Books.
• Brennan, K. A., Clark, C. L., & Shaver, P. R. (1998). Self-report measurement of adult attachment: An integrative overview. In J. A. Simpson & W. S. Rholes (Eds.), Attachment theory and close relationships (pp. 46–76). Guilford Press.
• Collins, N. L., & Read, S. J. (1994). Cognitive representations of attachment: The structure and function of working models. In K. Bartholomew & D. Perlman (Eds.), Advances in personal relationships: Vol. 5. Attachment processes in adulthood (pp. 53–90). Jessica Kingsley.
• Feddern, L. S., Fraley, R. C., & Roberts, B. W. (2020). The stability and change of attachment styles across the adult lifespan. Developmental Psychology, 56(4), 834–847. https://doi.org/10.1037/dev0000892
• Fraley, R. C., Heffernan, M. E., Vicary, A. M., & Brumbaugh, C. C. (2011). The Experiences in Close Relationships-Relationship Structures questionnaire: A method for assessing attachment orientations across relationships. Psychological Assessment, 23(3), 615–625. https://doi.org/10.1037/a0022898
• Fraley, R. C., Waller, N. G., & Brennan, K. A. (2000). An item response theory analysis of self-report measures of adult attachment. Journal of Personality and Social Psychology, 78(2), 350–365. https://doi.org/10.1037/0022-3514.78.2.350
• George, C., Kaplan, N., & Main, M. (1985). Adult Attachment Interview (Unpublished manuscript). University of California, Berkeley.
• Hazan, C., & Shaver, P. (1987). Romantic love conceptualized as an attachment process. Journal of Personality and Social Psychology, 52(3), 511–524. https://doi.org/10.1037/0022-3514.52.3.511
• Moreira, H., Gouveia, M. J., Carona, C., Silva, N., & Canavarro, M. C. (2015). Assessing adult attachment across different relational contexts: Psychometric properties of the Portuguese version of the Experiences in Close Relationships-Relationship Structures (ECR-RS) questionnaire. Journal of Child and Family Studies, 24(5), 1364–1377. https://doi.org/10.1007/s10826-014-9944-7

13. Items of the Scale (Questionnaire)