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Development and Validation of a Self-Report Measure of Mentalizing: The Reflective Functioning Questionnaire
Open accessAbstract
Reflective functioning or mentalizing is the capacity to interpret both the self and others in terms of internal mental states such as feelings, wishes, goals, desires, and attitudes. This paper is part of a series of papers outlining the development and psychometric features of a new self-report measure, the Reflective Functioning Questionnaire (RFQ), designed to provide an easy to administer self-report measure of mentalizing. We describe the development and initial validation of the RFQ in three studies. Study 1 focuses on the development of the RFQ, its factor structure and construct validity in a sample of patients with Borderline Personality Disorder (BPD) and Eating Disorder (ED) (n = 108) and normal controls (n = 295). Study 2 aims to replicate these findings in a fresh sample of 129 patients with personality disorder and 281 normal controls. Study 3 addresses the relationship between the RFQ, parental reflective functioning and infant attachment status as assessed with the Strange Situation Procedure (SSP) in a sample of 136 community mothers and their infants. In both Study 1 and 2, confirmatory factor analyses yielded two factors assessing Certainty (RFQ_C) and Uncertainty (RFQ_U) about the mental states of self and others. These two factors were relatively distinct, invariant across clinical and non-clinical samples, had satisfactory internal consistency and test-retest stability, and were largely unrelated to demographic features. The scales discriminated between patients and controls, and were significantly and in theoretically predicted ways correlated with measures of empathy, mindfulness and perspective-taking, and with both self-reported and clinician-reported measures of borderline personality features and other indices of maladaptive personality functioning. Furthermore, the RFQ scales were associated with levels of parental reflective functioning, which in turn predicted infant attachment status in the SSP. Overall, this study lends preliminary support for the RFQ as a screening measure of reflective functioning. Further research is needed, however, to investigate in more detail the psychometric qualities of the RFQ.
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“Internal consistency of RFQc and RFQu respectively are α = 0.65 and α = 0.77 in a clinical sample and α = 0.67 and α = 0.63 in a non-clinical sample, respectively [55].”
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“…used: Dysfunctional Attitudes Scale (DAS; [89]) to measure the severity of defeat-ist attitudes; the Reflective Functioning Questionnaire (RFQ-8; [24]) to assess metacognitive capacity; the Calgary Depression Scale for Schizophrenia (CDSS; [1]) to measure depression; and the Internalized Stigma…”
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“…for Adolescents” (MSA) [26], the “Reflective Functioning Scale” (RFS) [27], its later version, the “Reflective Functioning Questionnaire” (RFQ) [28], the “Metacognition Assessment Scale” (MAS) [27], the “Mentalization Questionnaire” (MZQ) [29], the “Mentalization Imbalances Scale” (MIS) [30],…”
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Metadata
- Authors
- Fonagy, P., Luyten, P., Moulton-Perkins, A., Lee, Y.-W., Warren, F., Howard, S., Ghinai, R., Fearon, P., & Lowyck, B.
- Affiliations
- University College London (GB)
- University of Surrey (GB)
- KU Leuven (BE)
- Corresponding author
- Fonagy, Peter
- Venue
- PLOS ONE
- Publisher
- Public Library of Science (PLoS)
- Published
- 2016-07-08
- Volume
- 11
- Issue
- 7
- Pages
- e0158678
- ISSN
- 1932-6203 (ISSN-L)
- PMC
- PMC4938585
- OpenAlex
- W2468117220
- Cited by
- 754
- References
- 113
- Citations by year
- 2026: 102 · 2025: 106 · 2024: 112 · 2023: 108 · 2022: 84 · 2021: 95 · 2020: 54 · 2019: 34 · 2018: 32 · 2017: 21 · 2016: 3
- FWCI
- 39.84
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- PLoS ONE (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Lirias (KU Leuven) (submittedVersion, other-oa)
- RePEc: Research Papers in Economics (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- UCL Discovery (University College London) (submittedVersion)
- Funders
- National Institute for Health Research (NF-SI-0514-10157)
- Economic and Social Research Council (RES-060-25-0044)
- Topics
- Social Sciences › Psychology › Clinical Psychology › Personality Disorders and Psychopathology
- Social Sciences › Psychology › Clinical Psychology › Personality Traits and Psychology
- Social Sciences › Psychology › Clinical Psychology › Psychoanalysis and Psychopathology Research
- Keywords
- mentalization, reflective functioning, self-report measure development, borderline personality disorder, eating disorders, parental reflective functioning, infant attachment, Strange Situation Procedure, empathy, mindfulness, perspective taking, psychometric validation, factor structure
- MeSH terms
- Female, Humans, Male, Psychometrics, Surveys and Questionnaires, Theory of Mind, Self Report
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