Parental Bonding Instrument (PBI)

Abstract

The Parental Bonding Instrument (PBI) is a widely utilized 25-item self-report measure designed to retrospectively assess an individual’s perception of the parenting style received from their mother and father during the critical first 16 years of life. Developed by Gordon Parker, Hilary Tupling, and L. B. Brown in 1979, the PBI operationalizes parental behavior along two primary, orthogonal dimensions: Care and Overprotection (or Control).

The instrument provides valuable insights into the quality of early parent-child relationships, identifying specific bonding patterns—such as optimal bonding or “Affectionless Control”—that are crucial for investigating the link between early environmental factors and adult psychosocial development and vulnerability to various mental health conditions. Its robust psychometric properties and demonstrated stability over long periods have made it an indispensable tool in clinical and epidemiological research.

Keywords

Parental Bonding Instrument, PBI, Care, Overprotection, Parental Style, Attachment, Retrospective assessment, Psychopathology, Control, Early environment.

Authors

Gordon Parker, Hilary Tupling, L. B. Brown.

Purpose

The primary purpose of the PBI is to provide a standardized, reliable, and retrospective measure of parental behavior as perceived by the adult offspring. It specifically aims to quantify the emotional climate (Care) and the level of autonomy granted or restricted (Overprotection) experienced during the formative years of childhood and adolescence (up to age 16). By using a retrospective methodology, the scale enables researchers to explore potential etiological factors in psychiatric disorders that may be rooted in early parent-child interactions.

The instrument is frequently employed in clinical settings to categorize parenting styles into four distinct quadrants based on the intersection of the two main factors. These quadrants—ranging from High Care/Low Overprotection (Optimal Bonding) to Low Care/High Overprotection (Affectionless Control)—are used to predict vulnerability to specific psychiatric outcomes, such as depression, anxiety disorders, and certain personality traits.

Construct

The PBI measures two core, empirically derived, and orthogonal dimensions of perceived parental bonding.

• Care: This dimension reflects the warmth, empathy, affection, emotional availability, and closeness perceived by the child. High scores on Care indicate a supportive, nurturing, and responsive parent. Items loading heavily on this factor focus on the parent’s ability to understand problems, display affection, and communicate warmly.
• Overprotection (Control): This dimension measures the extent of parental restrictiveness, intrusion, fostering of dependence, and discouragement of autonomous behavior. High scores on Overprotection indicate a controlling, invasive parent who limits the child’s freedom and encourages dependence. Items focus on themes such as privacy invasion, controlling activities, and preventing the child from growing up.

The theoretical underpinning of the PBI aligns closely with concepts from attachment theory, providing an accessible and quantifiable method for examining internalized models of parental behavior.

Validity

The PBI demonstrates robust evidence of construct validity, consistently validating the two hypothesized, independent dimensions of Care and Overprotection across diverse international populations. The structural validity is supported by the consistent replication of the two-factor model through factor analysis.

Criterion validity is strong, particularly in clinical research. The instrument reliably predicts vulnerability to psychopathology; for instance, the quadrant characterized by low Care and high Overprotection (‘Affectionless Control’) is repeatedly associated with increased risk for depression, anxiety, and specific personality disorders. Furthermore, longitudinal studies (e.g., Wilhelm et al., 2005) have confirmed the stability of retrospective PBI scores over periods exceeding two decades, suggesting that the scale measures a stable, internalized perception of the parent-child relationship rather than a mood-dependent state.

Reliability

The PBI possesses strong reliability across both its subscales.

Regarding internal consistency, the Care dimension typically yields high Cronbach’s alpha coefficients, often ranging between 0.80 and 0.90, indicating excellent homogeneity among the items measuring warmth and empathy. The Overprotection dimension also generally demonstrates very good internal consistency, with alpha coefficients usually falling between 0.70 and 0.85.

Test-retest reliability is a key strength of the PBI, confirming the stability of the measured construct. Research by Wilhelm and Parker (1990) and subsequent longitudinal studies have shown that PBI scores remain highly consistent over long periods, lending confidence to the use of the PBI as a measure of stable, perceived childhood experience that influences adult psychological functioning.

Factor Analysis

The original factor analysis conducted during the development of the PBI established a clear, two-factor oblique solution. This solution effectively separated the 25 items into the two principal factors: Care (12 items) and Overprotection (13 items). The factors are generally found to be statistically orthogonal, meaning they are largely uncorrelated, supporting the conceptual independence of parental warmth versus parental control.

This stable two-factor structure has been confirmed globally, solidifying the PBI’s foundational model. The analysis confirmed that specific items load highly and uniquely onto either the Care or Overprotection factors, guiding the precise scoring and interpretation methodology, including the necessity for reverse coding on certain items (R) to maintain factor consistency.

Instrument

Test Type: Self-report questionnaire, Retrospective assessment

Format: 25 items rated on a 4-point Likert scale.

Language Available: English (Original); widely translated and validated in numerous languages globally (e.g., German, Spanish, Chinese).

Population Group: Clinical and Non-clinical populations, particularly those enrolled in psychiatric or developmental research studies.

Age Group: Typically administered to adults (age 16 and older) recalling their childhood experiences.

Population Details: Used to assess the perceived parenting received from both mother and father separately, allowing for dyadic comparisons. Essential for studies linking early parenting styles to adult mental health outcomes.

Test Methodology: Respondents rate each of the 25 items based on how they remember their parent (mother or father, assessed separately) behaving toward them during the first 16 years of life. The 4-point response scale ranges from “Very like” to “Very unlike.” Subscale scores are calculated by summing the relevant item scores, adjusting for reverse-coded items (R).

Keywords

Parent-child relationship, Psychopathology risk, Affectionless Control, Retrospective measure, Maternal bonding, Paternal bonding, Dependency, Parenting dimensions.

Authors

Author ORCID Identifier: N/A (Information not provided in source)

Affiliation Email addresses: N/A (Information not provided in source)

Correspondence Address: N/A (Information not provided in source)

Permissions & Fee and Test Year

The Parental Bonding Instrument was first published in 1979 (Parker, Tupling, & Brown). It is often utilized in academic and research settings without cost, though researchers should verify the specific requirements for use, particularly in commercial or clinical applications, with the authors or the associated institutions.

The original PDF of the instrument, along with related materials, has been made available by institutions associated with the primary author. The original PDF can be downloaded here: http://www.blackdoginstitute.org.au/docs/ParentalBondingInstrument.pdf

Reference’s

The key references detailing the development, application, and psychometric evaluation of the Parental Bonding Instrument are:

• Parker, G., Tupling, H., & Brown, L. B. (1979). A parental bonding instrument. British Journal of Medical Psychology, 52, 1-10.
• Parker, G. (1983) Parental Overprotection: A Risk Factor in Psychosocial Development, Grune & Stratton, New York. (A monograph describing the development of the PBI and its application across a wide range of psychiatric conditions and other disorders, as well as validity studies).
• Wilhelm, K., Parker, G. (1990). Reliability of the Parental Bonding Instrument and Intimate Bond Measure Scales. New Zealand Journal of Psychiatry, 24(2):199-202.
• Wilhelm, K., Niven, H., Parker, G., & Hadzi-Pavlovic, D. (2005). The stability of the parental bonding instrument over a 20-year period. Psychological Medicine, 35, 387-393.
• Parker, G. (2010). The Parental Bonding Instrument (Annotated Bibliography). Retrieved from: http://www.blackdoginstitute.org.au/public/research/researchtools.cfm
• The instrument can also be found at: https://www.researchgate.net/publication/20759070

Items of the Parental Bonding Instrument (PBI)

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

1. Spoke to me with a warm and friendly voice
2. Did not help me as much as I needed
3. Let me do things I liked doing
4. Seemed emotionally cold to me
5. Appeared to understand my problems and worries
6. Was affectionate to me
7. Liked me to make my own decisions
8. Did not want me to grow up
9. Tried to control everything I did
10. Invaded my privacy
11. Enjoyed talking things over with me
12. Frequently smiled at me
13. Tended to baby me
14. Did not seem to understand what I needed or wanted
15. Let me decide things for myself
16. Made me feel I wasn’t wanted
17. Could make me feel better when I was upset
18. Did not talk with me very much
19. Tried to make me dependent on her/him
20. Felt I could not look after myself unless she/he was around
21. Gave me as much freedom as I wanted
22. Let me go out as often as I wanted
23. Was overprotective of me
24. Did not praise me
25. Let me dress in any way I pleased

Response Format: Very like, Moderately like, Moderately unlike, Very unlike

Care Subscale Items: Items 1, 2R, 4R, 5, 6, 11, 12, 14R, 16R, 17, 18R and 24R

Overprotection or Control Subscale Items: Items 3R, 7R, 8, 9, 10, 13, 15R, 19, 20, 21R, 22R, 23, and 25R

R = reverse coding