A longitudinal evaluation of a biopsychosocial model predicting BMI and disordered eating among young adults

Marita McCabe, Manuel Alcaraz-Ibanez, Charlotte Markey, Alvaro Sicilia, Rachel F. Rodgers, Annie Aimé, Jacinthe Dion, Giada Pietrabissa, Gianluca Lo Coco, Marie Caltabiano, Esben Strodl, Catherine Bégin, Marie Éve Blackburn, Gianluca Castelnuovo, Antonio Granero-Gallegos, Salvatore Gullo, Naomi Hayami-Chisuwa, Qiqiang He, Christoph Maïano, Gian Mauro ManzoniDavid Mellor, Michel Probst, Matthew Fuller-Tyszkiewicz

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Objective: This study examined the utility of a biopsychosocial model to explain both higher body mass index (BMI) and disordered eating. The study was designed to examine the predictors of higher BMI and a number of measures of disordered eating (dietary restraint, drive for muscularity, drive for thinness, binge eating, and compensatory behaviour). Method: Young adults (N = 838) recruited from seven countries, grouped into four regions (Europe, North American countries, Australia, Japan), completed an online survey, with each completion being 12 months apart. The survey included assessments of BMI and disordered eating, and a range of biological, psychological and sociocultural factors expected to predict both outcomes. Results: Results revealed unique patterns of association between predictors and BMI as well as different measures of disordered eating in the four geographical regions. Conclusions: The findings identify the specific nature of biopsychosocial factors that predict both higher BMI and different aspects of disordered eating. They also demonstrate that caution needs to be exercised in generalising findings from one country to other countries.

Original languageEnglish (US)
Pages (from-to)57-79
Number of pages23
JournalAustralian Psychologist
Issue number2
StatePublished - 2023

All Science Journal Classification (ASJC) codes

  • Arts and Humanities (miscellaneous)
  • Psychology(all)


  • Disordered eating
  • biopsychosocial model
  • cross-country research
  • longitudinal
  • obesity
  • risk factors


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