Jundishapur Journal of Health Sciences

Jundishapur Journal of Health Sciences

Translation and Psychometric Evaluation of the Persian Yale Food Addiction Scale 2.0 (YFAS 2.0): A Cross-Sectional Study

Document Type : Research Article

Authors
Masoumeh Tehrani* 1
Ghodratollah Shakerinejad 2
Zahra Baji 3
Azin Barmala 4
Mahmoud Tavousi 5
Ali Asghar Ha'eri Mehrizi 6
1 MSc of Nutrition, Department of Health Educations, Academic Center for Education, Culture and Research (ACECR)- Khuzestan, Ahvaz, Iran
2 Associated professor in Health Education, Health Education Research Department, ACECR Khuzestan Branch, Ahvaz, Iran
3 MSc in Health Education, Health Education Research Department, ACECR Khuzestan Branch, Ahvaz, Iran
4 PhD Student of Gerontology, Iranian research center on Aging, University of social welfare and rehabilitation sciences, Tehran, Iran.
5 PhD in Health Education, Health Assessment Research Center, Health Research Institute, ACECR, Tehran, Iran
6 MSc in Statistics, Health Assessment Research Center, Health Research Institute, ACECR, Tehran, Iran
10.22118/jjhs.2025.229896
Abstract
Background and Objective: The emerging field of food addiction research highlights the necessity of a robust assessment instrument. This study undertook the translation and psychometric evaluation of the Yale Food Addiction Scale 2.0 (YFAS 2.0), recognizing its potential as a vital tool in this area.
 
Methods: This cross-sectional study was conducted on 398 employees in Ahvaz city in two phases: 1- Translation of the instrument and 2- Examination of the psychometric properties of the instrument, including face validity, content validity, construct validity (confirmatory factor analysis, convergent validity, and discriminant validity), criterion validity, reliability (including internal consistency, stability, standard error of measurement), and responsiveness to change. Data analysis was performed using SPSS version 26 and AMOS version 22.
 
Findings: The study demonstrated robust face and content validity through qualitative and quantitative evaluations. Assessment of construct validity revealed that a single-factor structural equation model adequately fit the data. Convergent validity was supported by the significant correlation observed with Garner's Eating Attitude Test, and discriminant validity was evident through significant BMI-related differences. Criterion validity was also confirmed. High internal consistency was indicated by a Cronbach's α of 0.95 for the entire scale. Moreover, all stability and standard error of measurement parameters were within acceptable limits. Finally, the instrument showed appropriate responsiveness to change, as indicated by an area under the ROC curve of 0.981.
 
Conclusion: The favorable psychometric characteristics of the Persian YFAS 2.0, in this study, strongly support its broad application for evaluating food addiction among Persian speakers.
 
Footnotes
Acknowledgments
The researchers would like to express their gratitude and appreciation to all those who collaborated in conducting the research, especially the Honorable Deputy Director of Research of the Khuzestan Academic Jihad Organization, as well as the staff participating in this research.
 
Conflict of Interests Statement
The authors declare that they have no conflicts of interest related to the present research.
 
Data Availability
All data generated or analyzed in this study are available from the corresponding author upon reasonable request.
 
Funding/Support
There was no financial sponsor for the present study
 
Ethical Approval
All stages of the present study were approved by the Ethics Committee for Research at the Avicenna Research Institute of Academic Center for Education, Culture, and Research (ACECR) - Jahad Daneshgahi (Ref ID: IR.ACECR.AVICENNA.REC.1400.017).
 
Authors' Contribution
M.T. was responsible for the study design, execution, and article drafting. Q.Sh. and Z.B. collaborated on the study design. A.Z. contributed to the article drafting. M.T. and A.M. collaborated on the statistical analysis of the study findings.
 
Informed Consent
Written informed consent was obtained from all volunteers participating in the study before their enrollment.
Keywords
Food Addiction
Psychometrics
YFAS 2.0
  1. Zanbouri V. validity and reliability of the educational questionnaire in Marand high school students {Thesis}. 2018. https://dspace.tbzmed.ac.ir/search?spc.page=1&quer
    y=Vajihe%20zanbori
  2. Panahi A, Haghayegh SA. Developing the persian version of yale food addiction scale and assessing its psychometric properties. Iranian Journal of Psychiatry and Clinical Psychology. 2020;25(4):454-71. https://doi.org/10.32598/ijpcp.25.4.8
  3. Bassak Nejad S, Aarefi N, Arshadi N. Testing a model of emotional eating, emotional dysregulation, self-esteem, and impulsivity in food addiction among students. Health Psychology. 2018;7(26):132-45. 20.1001.1.23221283.1397.7.26.8.7
  4. Şengör G, Gezer C. Food addiction and its relationship with disordered eating behaviours and obesity. Eating and weight disorders-studies on anorexia, Bulimia and Obesity. 2019;24(6):1031-9. https://doi.org/
    10.1007/s40519-019-00662-3
  5. Sanlier N, Navruz Varli S, Macit MS, Mortas H, Tatar T. Evaluation of disordered eating tendencies in young adults. Eating and Weight Disorders-Studies on Anorexia, Bulimia and Obesity. 2017;22(4):623-31. https://doi.org/10.1007/s40519-017-0430-9
  6. Sengor G, Gezer C. The association between food addiction, disordered eating behaviors and food intake. Revista de Nutrição. 2020;33:e190039. https://doi.org/10.
    1590/1678-9865202033e190039 
  7. Lin C-Y, Imani V, Griffiths MD, Pakpour AH. Validity of the Yale Food Addiction Scale for Children (YFAS-C): Classical test theory and item response theory of the Persian YFAS-C. Eating and Weight Disorders-Studies on Anorexia, Bulimia and Obesity. 2021;26(5):1457-66. https://doi.org/10.1007/s40519-020-00956-x
  8. Manzoni GM, Rossi A, Pietrabissa G, Varallo G, Molinari E, Poggiogalle E, et al. Validation of the Italian Yale Food Addiction Scale in postgraduate university students. Eating and Weight Disorders-Studies on Anorexia, Bulimia and Obesity. 2018;23(2):167-76. https://doi.org/10.1007/s40519-018-0495-0
  9. Brunault P, Ballon N, Gaillard P, Réveillère C, Courtois R. Validation of the French version of the Yale Food Addiction Scale: an examination of its factor structure, reliability, and construct validity in a nonclinical sample. The Canadian Journal of Psychiatry. 2014;59(5):276-84. https://doi.org/10.1177/070674371405900507
  10. Ghanbari N, Nooripour R, Firoozabadi A, Var TSP, Wisniewski P, Hosseini SR. Psychometric assessment of Persian translation of Yale food addiction scale version 2.0 (YFAS 2.0) in Iranian college students. Journal of Eating Disorders. 2022;10(1):158. https://doi.org/10.1186/s40337-022-00689-5 
  11. Mohammadbeigi A, Mohammadsalehi N, Aligol M. Validity and reliability of the instruments and types of measurments in health applied researches. Journal of rafsanjan university of medical sciences. 2015;13(12):
    1153-70. 20.1001.1.17353165.1393.13.12.4.7
  12. DeVon HA, Block ME, Moyle‐Wright P, Ernst DM, Hayden SJ, Lazzara DJ, et al. A psychometric toolbox for testing validity and reliability. Journal of Nursing scholarship. 2007;39(2):155-64. https://doi.org/10.1111/j.1547-5069.2007.00161.x 
  13. Lawshe CH. A quantitative approach to content validity. Personnel psychology. 1975;28(4). https://doi.org/10.1111/j.1744-6570.1975.tb01393.x 
  14. Ebadi A, Taghizadeh Z, Montazeri A, Shahvari Z, Tavousi M, Bagherzadeh R. Translation, development and psychometric properties of health related measures-Part 2: construct validity, reliability and responsiveness. Payesh 2017; 16 (4):445-455. ‎ 20.1001.1.16807626.1396.16.4.5.8
  15. McHugh ML. Interrater reliability: the kappa statistic. Biochemia medica. 2012;22(3):276-82. https://doi.org/10.11613/BM.2012.031
  16. Safari S, Baratloo A. Evidence Based Medicine; Receiver Operating Characteristic Curve and Area under the Curve. Iranian Journal of Emergency Medicine. 2016;3(3):119-21. https://doi.org/10.22037/ijem.v3i3.13944
  17. Ceccarini M, Manzoni GM, Castelnuovo G, Molinari E. An evaluation of the Italian version of the Yale Food Addiction Scale in obese adult inpatients engaged in a 1-month-weight-loss treatment. Journal of medicinal food. 2015;18(11):1281-7. https://doi.org/10.1089/jmf.2014.0188
  18. Nantha YS, Abd Patah NA, Pillai MP. Preliminary validation of the Malay Yale Food Addiction Scale: factor structure and item analysis in an obese population. Clinical Nutrition ESPEN. 2016;16:42-7. https://doi.org/10.1016/j.clnesp.2016.08.001
  1. Hauck C, Weiß A, Schulte EM, Meule A, Ellrott T. Prevalence of ‘food addiction'as measured with the Yale Food Addiction Scale 2.0 in a representative German sample and its association with sex, age and weight categories. Obesity facts. 2017;10(1):12-24. https://doi.org/10.1159/000456013
  2. Tajik-Esmaeeli S, Jolfaei AG, Rashedi V, Kamalzadeh L, Rahimi Z, Salehian R. Psychometric Properties of the Persian Version of the Yale Food Addiction Scale 2.0 (P-YFAS 2.0) in an Iranian Clinical Sample. Journal of Iranian Medical Council. 2023. https://doi.org/10.18502/JIMC.V7I2.15044
  3. 21. Chen I-H, Huang P-C, Lin Y-C, Gan WY, Fan C-W, Yang W-C, et al. The Yale food addiction scale 2.0 and the modified Yale food addiction scale 2.0 in Taiwan: factor structure and concurrent validity. Frontiers in Psychiatry. 2022;13:1014447. https://doi.org/10.3389/fpsyt.2022.1014447
Jundishapur Journal of Health Sciences
Volume 17, Issue 3
Summer 2025
Pages 40-47