Table of Contents
Abstract
The McMaster Family Assessment Device (FAD) is a widely utilized, self-report psychological scale designed to measure family functioning according to the parameters established by the McMaster Model of Family Functioning (MMFF). Developed by Epstein, Baldwin, and Bishop in 1983, the FAD provides a comprehensive assessment of structural, organizational, and transactional characteristics within a family unit. It is particularly valuable in clinical settings and research for identifying dysfunctional patterns across six key dimensions of family life, plus a measure of overall family health.
The FAD consists of 60 items rated on a 4-point Likert scale and is structured to provide scores on seven subscales, allowing clinicians and researchers to pinpoint specific areas of strength and weakness within the family system. Its robust psychometric properties, including high internal consistency, have made it a standard tool for assessing family dynamics across diverse populations globally.
Keywords
McMaster Family Assessment Device, FAD, family functioning, family assessment, McMaster Model of Family Functioning, psychological scale, communication, problem solving, behavioral control
Authors
Nathan B. Epstein, Linda M. Baldwin, Dennis S. Bishop
Purpose
The primary purpose of the Family Assessment Device (FAD) is to operationalize the theoretical constructs of the McMaster Model of Family Functioning (MMFF), translating abstract concepts into quantifiable measures. This allows for standardized assessment of family health and pathology.
In clinical practice, the FAD helps therapists diagnose family dysfunction, plan targeted interventions, and monitor treatment efficacy. For research purposes, it provides a reliable and valid instrument for studying the relationships between family characteristics and various mental health outcomes in both children and adults. The scale aims to differentiate between healthy and unhealthy family units by measuring how effectively the family manages universal tasks, such as handling crises, maintaining boundaries, and expressing emotions.
Construct
The FAD is grounded in the McMaster Model of Family Functioning, which views family structure and organization as crucial determinants of family effectiveness. The model posits that healthy families are those capable of meeting the needs of their members and adapting to changing circumstances. The FAD measures functioning across six specific dimensions, plus a seventh scale for General Functioning, which encompasses the overall health of the family system.
The six core dimensions measured by the FAD are:
- Problem Solving: The family’s ability to resolve problems that threaten functional capacity.
- Communication: The quality and clarity of information exchange within the family.
- Roles: The established patterns of behavior for handling family functions (e.g., provision of resources, nurturing). (Note: While ‘Roles’ is a core MMFF dimension, the specific items provided in the source content focus on the other six dimensions, but FAD traditionally measures Roles.)
- Affective Responsiveness: The ability of family members to respond appropriately to a range of emotional stimuli.
- Affective Involvement: The extent to which family members demonstrate interest in and value each other’s activities and concerns.
- Behavioral Control: The patterns by which the family maintains standards and regulates behavior in potentially dangerous or socially unacceptable situations.
- General Functioning: An overall index reflecting the psychological health or pathology of the family unit.
Validity
The validity of the FAD has been supported through numerous studies demonstrating its ability to discriminate between clinical and non-clinical populations, thus establishing criterion validity. The structure of the FAD aligns strongly with the theoretical dimensions of the McMaster Model of Family Functioning, supporting its construct validity.
Research, such as that conducted by Aarons et al. (2007), has specifically investigated the factor structure and validity across diverse ethnic groups, confirming that the FAD maintains its measurement properties for both Caucasian and Hispanic American populations. This suggests that the scale’s underlying factors are robust across different cultural contexts, enhancing its clinical utility and generalizability.
Reliability
The FAD demonstrates strong internal consistency reliability, typically measured using Cronbach’s Alpha coefficients. The reliability estimates for the subscales and the overall measure, as reported in the source content and consistent with broader literature, indicate high reliability:
- Problem Solving: 0.72
- Communication: 0.68
- Affective Responsiveness: 0.68
- Affective Involvement: 0.70
- Behavioral Control: 0.75
- General Functioning: 0.82
- Overall FAD Score: 0.93
The overall alpha coefficient of 0.93 indicates excellent internal consistency for the total scale, confirming that the items consistently measure the latent construct of family functioning. Subscale reliabilities are generally acceptable for research purposes, with the General Functioning scale showing particularly high consistency.
Factor Analysis
Factor analysis studies typically confirm the multidimensional structure of the FAD, supporting the six core dimensions derived from the McMaster Model of Family Functioning. Although the scale is often treated as a measure of seven factors (six dimensions plus General Functioning), the items within each dimension tend to load highly onto their respective factors.
Studies examining the factor structure across different populations, including cross-cultural adaptations (e.g., the Spanish version developed by Barroilhet et al., 2009), generally uphold the intended factorial structure, although minor variations may occur depending on the specific sample characteristics. The strong factor loadings contribute significantly to the FAD’s status as a reliable psychological scale for assessing family dynamics.
Instrument
Test Type: Self-report psychological scale
Format: 60 items, using a 4-point Likert scale (1 = Strongly agree, 2 = Agree, 3 = Disagree, 4 = Strongly disagree). Items are scored such that higher scores indicate poorer or more dysfunctional family functioning.
Language Available: English, Spanish, and numerous other translations due to its widespread international use.
Population Group: Clinical and non-clinical families, including adolescents and adults capable of self-report.
Age Group: Typically 12 years and older (adolescents and adults).
Population Details: Used across various ethnic and cultural backgrounds, including specific validation studies for Caucasian and Hispanic Americans.
Test Methodology: Individual members complete the questionnaire independently, reflecting their perception of the family unit’s functioning. Scores are calculated for each of the six dimensions and the General Functioning scale.
Keywords
MMFF, self-report inventory, clinical psychology, family therapy, affective responsiveness, behavioral control, psychometrics, General Functioning scale
Authors
Author ORCID Identifier: N/A (Information not provided in source material)
Affiliation Email addresses: N/A (Information not provided in source material)
Correspondence Address: N/A (Information not provided in source material)
Permissions & Fee and Test Year
Test Year: 1983 (Initial publication)
Permissions and Fees: Use of the FAD is typically subject to copyright held by the original authors or their affiliated institutions. Researchers and clinicians should consult the original sources or authorized distributors for current permissions and licensing fees.
The instrument in its entirety can be found in resources such as Latino Families and Youth: A Compendium of Assessment Tools. The original PDF can be downloaded here: http://www.paho.org/hq/index.php?option=com_docman&task=doc_view&gid=23171&Itemid
Reference’s
Aarons, G. A., McDonald, E. J., Connelly, C. D., & Newton, R. R. (2007). Assessment of family functioning in Caucasian and Hispanic Americans: Reliability, validity, and factor structure of the Family Assessment Device. Family Process, 46(4), 557-569.
Barroilhet, S., Cano-Prous, A., Cervera-Enguix, S., Forjaz, M. J., & Guillén-Grima, F. (2009). A Spanish version of the Family Assessment Device. Social Psychiatry and Psychiatric Epidemiology, 44(12), 1051-1065.
Epstein, N. B., Baldwin, L. M., & Bishop, D. S. (1983). The Mcmaster Family Assessment Device. Journal of Marital and Family Therapy, 9(2), 171-180.
Items of the Mcmaster Family Assessment Device (FAD)
IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.
Response Scale:
1 = Strongly agree
2 = Agree
3 = Disagree
4 = Strongly disagree
Cite this article
(2025). McMaster Family Assessment Device (FAD). Psychological Scales & Instruments Database. Retrieved from https://db.arabpsychology.com/scales/mcmaster-family-assessment-device-fad/
. "McMaster Family Assessment Device (FAD)." Psychological Scales & Instruments Database, 12 Oct. 2025, https://db.arabpsychology.com/scales/mcmaster-family-assessment-device-fad/.
. "McMaster Family Assessment Device (FAD)." Psychological Scales & Instruments Database, 2025. https://db.arabpsychology.com/scales/mcmaster-family-assessment-device-fad/.
(2025) 'McMaster Family Assessment Device (FAD)', Psychological Scales & Instruments Database. Available at: https://db.arabpsychology.com/scales/mcmaster-family-assessment-device-fad/.
[1] , "McMaster Family Assessment Device (FAD)," Psychological Scales & Instruments Database, vol. X, no. Y, ص Z-Z, October, 2025.
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