Evaluation of the reliability and validity of the Italian version of the schema mode inventory for eating disorders: short form for adults with dysfunctional eating behaviors

Giada Pietrabissa, Alessandro Rossi, Susan Simpson, Andrea Tagliagambe, Venessa Bertuzzi, Clarissa Volpi, Giulia Fava, Gian Mauro Manzoni, Giovanni Gravina, Gianluca Castelnuovo

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: To examine the psychometric properties and the factorial structure of the Italian version of the schema mode inventory for eating disorders—short form (SMI-ED-SF) for adults with dysfunctional eating patterns. Methods: 649 participants (72.1% females) completed the 64-item Italian version of the SMI-ED-SF and the eating disorder examination questionnaire (EDE-Q) for measuring eating disorder symptoms. Psychometric testing included confirmatory factor analysis (CFA) and internal consistency. Multivariate analysis of covariance (MANCOVA) was also run to test statistical differences between the EDE-Q subscales on the SMI-ED-SF modes, while controlling for possible confounding variables. Results: Factorial analysis confirmed the 16-factors structure for the SMI-ED-SF [S–Bχ2 (1832) = 3324.799; p <.001; RMSEA = 0.045; 90% CI 0.043–0.048; CFI = 0.880; SRMR = 0.066; χ2/df = 1.81; < 3]. Internal consistency was acceptable in all scales, with Cronbach’s Alpha coefficients ranging from 0.635 to 0.873. Conclusions: The SMI-ED-SF represents a reliable and valid alternative to the long-form SMI-ED for assessment and conceptualization of schema modes in Italian adults with disordered eating habits. Its use is recommended for clinical and research purposes. Level of evidence: Level V, descriptive study.

Original languageEnglish
Pages (from-to)553-565
Number of pages13
JournalEating and Weight Disorders
Volume25
Issue number3
DOIs
Publication statusPublished - Jun 1 2020

Keywords

  • Eating disorders
  • Factorial structure
  • Modes
  • Psychometric properties
  • Schema therapy

ASJC Scopus subject areas

  • Clinical Psychology
  • Psychiatry and Mental health

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