Abstract
The Friendship Self-Regulation Questionnaire (SRQ-F), belonging to the family of Self-Determination Theory (SDT) self-regulation assessment instruments developed by Edward L. Deci and Richard M. Ryan, is an empirically established psychometric instrument designed to evaluate individual motivational orientations and behavioral regulation within personal close friendships. Anchored in the organismic integration theory mini-theory of SDT, the instrument quantifies the degree to which an individual experiences autonomy versus control in their close relational ties. The standard SRQ-F comprises 20 items organized across four stem situations addressing salient relational actions: why one remains close friends, why one spends time together, why one listens to a friend’s personal issues, and why one keeps interpersonal commitments. Across these four relational scenarios, the measure operationalizes four distinct regulatory styles along the self-determination continuum: External Regulation, Introjected Regulation, Identified Regulation, and Intrinsic Motivation.
Each item is evaluated on a 7-point Likert-type response scale ranging from 1 (“not at all true”) to 7 (“very true”), with 4 indicating “somewhat true.” The scale yields both discrete subscale indices reflecting specific motivational styles and a composite Relative Autonomy Index (RAI) that reflects the global degree of autonomous self-regulation. Psychometric evaluations consistently demonstrate robust internal consistency across subscales (Cronbach’s α typically ranging from .71 to .87), confirmed simplex-pattern intercorrelations characteristic of SDT constructs, convergent validity with measures of relational satisfaction, secure attachment, and empathic responsiveness, and discriminant validity against social desirability biases. This article reviews the theoretical foundations, structural dimensions, psychometric validation, and applied utility of the SRQ-F in interpersonal psychology, dyadic relational science, and socioemotional wellness research.
Keywords
Friendship Self-Regulation Questionnaire, SRQ-F, Self-Determination Theory, autonomous motivation, controlled motivation, Relative Autonomy Index, interpersonal relationships, external regulation, introjected regulation, identified regulation
Authors
The Friendship Self-Regulation Questionnaire was conceptualized and formulated within the empirical research program of Self-Determination Theory, spearheaded by Edward L. Deci and Richard M. Ryan at the Department of Clinical and Social Sciences in Psychology, University of Rochester, alongside notable collaborators specializing in close interpersonal relationships, including Camille P. Knee (University of Houston) and Richard Koestner (McGill University).
- Richard M. Ryan, Ph.D. — Professor Emeritus of Psychology at the University of Rochester; Research Professor at the Institute for Positive Psychology and Education, Australian Catholic University, Sydney, Australia.
- Edward L. Deci, Ph.D. — Professor Emeritus of Psychology and Gowen Professor in the Social Sciences at the University of Rochester; Professorial Research Fellow at the Australian Catholic University.
- C. Raymond Knee, Ph.D. — Professor of Social Psychology, Department of Psychology, University of Houston, whose programmatic inquiries into relationship self-determination, relational autonomy, and interpersonal belief frameworks provided foundational validation for the friendship adaptation of the SRQ.
For administrative inquiries and primary documentation regarding the suite of Self-Regulation Questionnaires, researchers may consult the official Self-Determination Theory research portal (selfdeterminationtheory.org) or the scholarly archives of the Department of Clinical and Social Sciences in Psychology, University of Rochester, Rochester, New York, United States.
Purpose
The primary clinical and psychometric purpose of the Friendship Self-Regulation Questionnaire (SRQ-F) is to assess the specific motivational foundations that govern an individual’s voluntary engagement, commitment, and responsiveness within a specific, identified friendship. While interpersonal bonds are normative across the lifespan, the psychological reasons why individuals initiate, sustain, and invest emotional energy into friendships vary fundamentally. Some individuals maintain friendships due to autonomous reasons—genuine enjoyment, shared interests, mutual growth, and deeply internalized values of loyalty. Others maintain relationships under controlled pressure—apprehension of social exclusion, interpersonal guilt, external surveillance, or desires for narcissistic self-enhancement.
In empirical research, the SRQ-F provides investigators with an instrument to model interpersonal dynamics through the lens of motivational quality rather than mere quantitative relationship characteristics (such as relationship duration or contact frequency). Decades of empirical literature illustrate that autonomous friendship motivation predicts greater dyadic stability, superior conflict resolution styles, elevated levels of spontaneous pro-social behaviors, deeper emotional vulnerability, and greater relational trust. Conversely, controlled regulation in friendships is correlated with transactional scorekeeping, conditional regard, defensive hostility during disagreements, anxiety regarding abandonment, and depressive symptomatology when interpersonal rupture threatens self-esteem.
From an applied and therapeutic perspective, the SRQ-F serves as a functional diagnostic tool in counseling, marriage and family therapy, and adolescent intervention settings. Clinicians utilize the instrument to uncover whether an individual exhibits chronic codependency or defensive compliance (predominantly introjected and external regulation) versus authentic engagement. Identifying rigid, introjected regulatory styles in a friendship allows therapists to guide clients away from anxiety-driven obligate loyalty toward autonomous, value-congruent relational boundaries.
Psychological Construct
The construct assessed by the SRQ-F is domain-specific relational self-regulation. Anchored along the continuum of self-determination, the questionnaire operationalizes four conceptually discrete yet systematically interrelated regulatory loci, reflecting the degree to which behavioral enactment within the friendship is integrated into the self:
1. External Regulation
External regulation sits at the least self-determined end of the extrinsic motivation spectrum. In this mode, friendship behaviors (e.g., maintaining contact, honoring plans, actively listening) are regulated by direct contingencies, external rewards, coercive interpersonal pressures, or the avoidance of punishments and social retaliation. An individual acting from external regulation engages in the friendship because significant others demand it, because failing to do so would trigger immediate negative feedback (e.g., the friend becoming angry or terminating the connection), or to reap instrumental status benefits. An illustrative exemplar from the SRQ-F is maintaining connection because “my friend would get mad at me if I didn’t” or because “this person really wants me to be a close friend.”
2. Introjected Regulation
Introjected regulation represents a form of internalized extrinsic motivation in which behavioral regulation is maintained through internally generated, coercive sanctions. Although the behavioral driver operates from within the person rather than from an overt external actor, it remains controlled rather than self-determined. Actions are executed to preserve unstable self-esteem, to obtain ego-aggrandizement (“feeling important”), or to avoid intense feelings of guilt, shame, and self-recrimination. An individual dominated by introjection feels that they “ought” or “must” behave in a certain manner as a loyal companion. Representative items include remaining friends because “being friends with him/her helps me feel important” or keeping promises because “I would feel bad about myself if I didn’t.”
3. Identified Regulation
Identified regulation marks the threshold into autonomous behavioral regulation. Here, the individual has consciously recognized, evaluated, and accepted the underlying value of the friendship and its associated behaviors. Actions are carried out because they align with personal goals, core ethics, and chosen life values, even if the activities are not immediately pleasant or intrinsically thrilling. The behavior is performed willingly, free from internal or external coercion. Exemplars in the scale include sustaining the relationship because “my commitment to him/her is personally very important to me” or keeping commitments because “I believe it is an important personal attribute to live up to my promises to a friend.”
4. Intrinsic Motivation
Intrinsic motivation is the prototypical archetype of autonomous self-determination. In this regulatory style, behaviors are undertaken for their inherent interest, deep joy, spontaneous curiosity, and immediate psychological satisfaction. The friendship is an arena of vitality, shared humor, creative interplay, and genuine affection without instrumental calculation. When engaging with their companion, the individual feels authentic presence and spontaneous joy. Prototypic items include spending time with the companion because “it is fun spending time with him/her” or sustaining connection because “I enjoy the numerous crazy and amusing moments that we share.”
Theoretical Framework
The theoretical bedrock of the SRQ-F is Self-Determination Theory (SDT), an overarching macro-theory of human motivation, personality development, and psychological wellness established by Edward L. Deci and Richard M. Ryan. Within SDT, the instrument is grounded specifically in Organismic Integration Theory (OIT) and Basic Psychological Needs Theory (BPNT).
Organismic Integration Theory (OIT)
OIT posits that human beings possess an active, innate developmental tendency toward integrating ambient social norms, responsibilities, and external regulations into an integrated sense of self. Unlike traditional behavioral theories that reduce motivation to a dichotomy between intrinsic and extrinsic drivers, OIT maps behavioral regulation onto a developmental and functional continuum differentiated by perceived locus of causality (PLOC):
- External PLOC: Experienced as alien, coercive, and originating outside the core self (External and Introjected Regulations).
- Internal PLOC: Experienced as volition, authentic choice, and personal agency (Identified, Integrated, and Intrinsic Regulations).
The SRQ-F leverages this conceptual continuum across multiple fundamental situations common to interpersonal friendships (commitment, shared recreation, supportive emotional labor, and mutual fidelity). Because the continuum forms a quasi-simplex pattern, adjacent forms of motivation correlate more positively with one another than with distal forms (e.g., Identified regulation correlates positively with Intrinsic motivation, while External regulation correlates inversely with Intrinsic motivation).
Basic Psychological Needs in Dyadic Relationships
SDT specifies three basic psychological needs essential for human flourishing: Autonomy (feeling self-governing and agentic), Competence (feeling effective in interacting with the environment), and Relatedness (feeling connected, loved, and belonging with significant others). Knee, Patrick, and Lonsbary (2003) noted an apparent paradox in close relationships: how does one balance the need for personal autonomy with the need for mutual relatedness? The SRQ-F demonstrates that true relatedness is not antithetical to autonomy; rather, authentic intimacy requires autonomous motivation. When an individual provides emotional support or companionship willingly (identified or intrinsic regulation), both autonomy and relatedness needs are fulfilled. In contrast, when one offers social support under introjected compulsion or external fear of reprimand, relatedness is undermined by underlying resentment and psychological strain.
Validity
The construct, convergent, discriminant, and predictive validity of the Friendship Self-Regulation Questionnaire has been evaluated across cross-sectional, longitudinal, and dyadic daily-diary investigations.
Construct and Structural Validity
Construct validity is evidenced by the characteristic simplex pattern of correlations among the subscales. In accordance with SDT’s theoretical continuum, adjacent subscales (such as External and Introjected, or Identified and Intrinsic) exhibit moderate-to-strong positive correlations (typically $r = .40$ to $.60$), whereas subscales located at opposing ends of the continuum (External Regulation versus Intrinsic Motivation) demonstrate negative or near-zero correlations (typically $r = -.15$ to $-.35$). This structure verifies that the four subscales assess a single, unified continuum of self-determination rather than disconnected traits.
Convergent and Discriminant Validity
Convergent validity has been established through direct associations with relational functioning and personality measures:
- Relational Satisfaction and Closeness: Autonomous friendship motivation (Identified and Intrinsic subscales or composite RAI) demonstrates strong positive correlations with the Relationship Assessment Scale ($r = .45$ to $.58$), perceived relationship quality, and mutual self-disclosure.
- Attachment Security: Autonomous regulation correlates positively with secure attachment styles ($r = .35$ to $.48$) on the Experiences in Close Relationships (ECR) scale, whereas Introjected Regulation correlates with anxious attachment ($r = .40$ to $.52$) and External Regulation correlates with avoidant attachment ($r = .30$ to $.42$).
- Discriminant Distinctiveness: Studies show modest-to-negligible correlations between the SRQ-F subscales and measures of social desirability (e.g., the Marlowe-Crowne Social Desirability Scale, $|r| < .15$), confirming that self-determined responses do not merely reflect defensive impression management.
Predictive and Ecological Validity
In daily-diary studies conducted by Knee et al. (2002, 2005), autonomous friendship regulation reliably predicted constructive conflict management, including active listening, integrative problem solving, and lower levels of defensive withdrawal during dyadic disputes. Furthermore, when individuals with high autonomous regulation encountered a friend’s distress, they offered non-directive emotional support that enhanced the friend’s subjective vitality, whereas individuals high in introjected regulation tended to offer controlling, unsolicited advice that inadvertently elevated their friend’s stress levels.
Reliability
The Friendship Self-Regulation Questionnaire demonstrates consistent reliability metrics across diverse empirical populations, including late adolescents, university student cohorts, and community adult samples.
Internal Consistency
Internal consistency estimates (Cronbach’s alpha and McDonald’s omega) across published validation cohorts consistently meet standard psychometric benchmarks for social and behavioral science research:
- External Regulation Subscale: $\alpha = .72$ to $.81$ (5 items)
- Introjected Regulation Subscale: $\alpha = .74$ to $.83$ (5 items)
- Identified Regulation Subscale: $\alpha = .78$ to $.85$ (5 items)
- Intrinsic Motivation Subscale: $\alpha = .80$ to $.87$ (5 items)
- Relative Autonomy Index (Composite): Composite reliability coefficients typically exceed $.85$.
Temporal Stability (Test-Retest Reliability)
Test-retest reliability across 4- to 8-week intervals reveals robust temporal stability for specific stable friendships, with intraclass correlation coefficients (ICCs) and Pearson coefficients ranging between $.70$ and $.82$. While regulatory scores demonstrate stable individual trait-like tendencies, longitudinal investigations also confirm the scale’s sensitivity to meaningful relational events; for instance, severe relational betrayal or major life transitions produce detectable shifts toward controlled or external regulatory modes, illustrating appropriate state responsiveness.
Factor Analysis
Confirmatory Factor Analysis (CFA) and Exploratory Structural Equation Modeling (ESEM) have validated the dimensional structure of the SRQ-F.
Confirmatory Factor Analysis Models
Empirical evaluations have compared single-factor, orthogonal four-factor, and oblique four-factor models. Standard four-factor oblique CFA models demonstrate acceptable to superior fit to empirical data:
- Comparative Fit Index (CFI): $.92$ to $.96$
- Tucker-Lewis Index (TLI): $.90$ to $.95$
- Root Mean Square Error of Approximation (RMSEA): $.048$ to $.062$ ($90%\text{ CI } [.039, .069]$)
- Standardized Root Mean Square Residual (SRMR): $.045$ to $.058$
Standardized factor loadings across all 20 items consistently surpass the psychometric threshold of $.50$, with the majority loading between $.58$ and $.84$ on their designated latent factors without pathological cross-loadings onto alternative motivational dimensions.
Simplex and Bifactor Structural Validations
Structural equation modeling supports the presence of a quasi-simplex pattern among latent factors. When modeled as a continuum using multidimensional scaling (MDS) or second-order hierarchical autonomy modeling, the simplex matrix demonstrates that correlation values steadily decrease as factors grow further apart along the conceptual self-determination continuum. Multigroup CFA has further verified full configural, metric, and scalar measurement invariance across gender groups, indicating that men and women interpret the underlying motivational constructs and items in an equivalent manner.
Instrument / Measurement Tool
The Friendship Self-Regulation Questionnaire is an interactive or paper-and-pencil self-report instrument. It is structured around four primary questions representing prototypical interpersonal situations (A, B, C, and D), each followed by specific behavioral justifications reflecting the four SDT regulatory styles:
- Test Type: Domain-specific psychometric self-report rating scale.
- Target Population: Adolescents and adults (typically ages 14 and older) reporting on a designated close friendship.
- Item Count: 20 items organized under 4 contextual stems (Question A: 8 items; Question B: 4 items; Question C: 4 items; Question D: 4 items).
- Response Scale: 7-point Likert-type scale with anchor points:
- 1: Not at all true
- 4: Somewhat true
- 7: Very true
- Item Allocation Across Subscales:
- External Regulation (5 items): Items 3, 7, 9, 15, 20.
- Introjected Regulation (5 items): Items 1, 5, 11, 14, 18.
- Identified Regulation (5 items): Items 4, 8, 12, 16, 17.
- Intrinsic Motivation (5 items): Items 2, 6, 10, 13, 19.
- Scoring Protocols:
- Subscale Scores: Calculate the arithmetic mean of the items comprising each subscale. This yields four distinct scores ranging from 1.0 to 7.0.
- Autonomous Motivation Composite: Average of Identified and Intrinsic subscales: $\frac{\text{Identified} + \text{Intrinsic}}{2}$.
- Controlled Motivation Composite: Average of External and Introjected subscales: $\frac{\text{External} + \text{Introjected}}{2}$.
- Relative Autonomy Index (RAI): A single composite score reflecting overall self-determination, calculated using SDT weighting formulas:
$$\text{RAI} = (-2 \times \text{External}) + (-1 \times \text{Introjected}) + (+1 \times \text{Identified}) + (+2 \times \text{Intrinsic})$$
Higher positive RAI values indicate higher relative autonomy, whereas negative values reflect predominantly controlled relational motivation.
Permissions & Fee and Test Year
The Friendship Self-Regulation Questionnaire was developed in the late 1990s as part of the broader program of self-regulation questionnaires developed by Edward L. Deci, Richard M. Ryan, and their interpersonal research colleagues. The scale is placed in the public domain for academic, non-commercial research, and educational purposes by the copyright holders and the Center for Self-Determination Theory (CSDT).
- Year of Formal Introduction: Circa 1996–2000.
- Licensing Fee: Open access; zero fee for non-commercial academic research, pedagogical use, and clinical practice.
- Commercial Usage: For-profit application, commercial licensing, or inclusion in commercial software requires prior explicit written permission from the copyright owners and the Center for Self-Determination Theory.
- Official Repository: Additional documentation, scoring guides, and companion questionnaires for other domains (e.g., Academic, Prosocial, Exercise, Religion) can be accessed via selfdeterminationtheory.org.
References
- Deci, E. L., & Ryan, R. M. (1985). Intrinsic motivation and self-determination in human behavior. Plenum Press. https://doi.org/10.1007/978-1-4899-2271-7
- Deci, E. L., & Ryan, R. M. (2000). The “what” and “why” of goal pursuits: Human needs and the self-determination of behavior. Psychological Inquiry, 11(4), 227–268. https://doi.org/10.1207/S15327965PLI1104_01
- Knee, C. R., Lonsbary, C., Canevello, A., & Patrick, H. (2005). Self-determination and conflict in romantic relationships. Journal of Personality and Social Psychology, 89(6), 997–1009. https://doi.org/10.1037/0022-3514.89.6.997
- Knee, C. R., Patrick, H., & Lonsbary, C. (2003). Self-determination theory in close relationships: An overview. Journal of Social and Personal Relationships, 20(4), 527–546. https://doi.org/10.1177/02654075030204007
- Knee, C. R., Patrick, H., Vietor, N. A., Nanayakkara, A., & Neighbors, C. (2002). Self-determination as growth motivation in romantic relationships. Personality and Social Psychology Bulletin, 28(5), 609–619. https://doi.org/10.1177/0146167202288005
- Ryan, R. M., & Connell, J. P. (1989). Perceived locus of causality and internalization: Examining reasons for acting in two domains. Journal of Personality and Social Psychology, 57(5), 749–761. https://doi.org/10.1037/0022-3514.57.5.749
- Ryan, R. M., & Deci, E. L. (2000). Self-determination theory and the facilitation of intrinsic motivation, social development, and well-being. American Psychologist, 55(1), 68–78. https://doi.org/10.1037/0003-066X.55.1.68
- Ryan, R. M., & Deci, E. L. (2017). Self-determination theory: Basic psychological needs in motivation, development, and wellness. Guilford Press. https://doi.org/10.1521/978.14625/28806
Items of the Scale
Response Scale:
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|
| not at all true | somewhat true | very true |
Being Friends
This questionnaire has four questions, and each questions is followed by a set of possible answers. Please read the first question, and then consider each response. Indicate how true each response is for you in the particular friendship you have selected using the scale above.
A. Why am I close friends with this person now?
- Because being friends with him/her helps me feel important.
- Because I enjoy the numerous crazy and amusing moments that we share.
- Because my friend would be upset if I ended the relationship.
- Because I feel a lot of freedom and personal satisfaction in our friendship.
- Because I would feel guilty if I withdrew from the friendship.
- Because he/she is someone I really enjoy sharing emotions and special events with.
- Because this person really wants me to be a close friend.
- Because my commitment to him/her is personally very important to me.
B. Why do I spend time with my friend?
- Because my friend would get mad at me if I didn’t.
- Because it is fun spending time with him/her.
- Because I think it is what friends are supposed to do.
- Because I really value spending time with my friend.
C. Why do I listen to my friend’s problems, or to what my friend has to say?
- Because it’s interesting and satisfying to be able to share like that.
- Because I would feel guilty if I did not.
- Because my friend praises me and makes me feel good when I do.
- Because I really value getting to know my friend better.
D. Why do I keep promises to my friend?
- Because I believe it is an important personal attribute to live up to my promises to a friend.
- Because I would feel bad about myself if I didn’t.
- Because I really enjoy following through on my promises.
- Because it would threaten our friendship if I were not trustworthy.