AUTHOR=Nakai Fumiya , Horigome Toshiro , Fujikawa Mayu , Horie Haruaki , Mimura Masaru , Kishimoto Taishiro 
  
TITLE=Japanese version of the motivation to change lifestyle and health behaviors for dementia risk reduction scale: a cross-cultural validation
  
JOURNAL=International Journal of Public Health
  
VOLUME=Volume 71 - 2026
  
YEAR=2026
  
URL=https://www.ssph-journal.org/journals/international-journal-of-public-health/articles/10.3389/ijph.2026.1609357
  
DOI=10.3389/ijph.2026.1609357
  
ISSN=1661-8564
  
ABSTRACT=ObjectivesThis study examined the reliability and validity of a Japanese version of the Motivation to Change Lifestyle and Health Behaviors for Dementia Risk Reduction (MCLHB-DRR) scale, which assesses the motivation to change lifestyle and health behavior for preventing major neurocognitive disorder based on the health belief model.MethodsThe scale was translated using Brislin’s translation model. A total of 500 Japanese adults aged 40–89 years were recruited online. The translated version was evaluated for content validity, internal consistency, and test-retest reliability over 2 weeks.ResultsExploratory factor analysis revealed a seven-factor model that explained 58% of the variance. Cronbach’s α was >0.7 for all seven subscales and item–total correlations were significant for all items. Confirmatory factor analysis exhibited a moderate fit, and the factor loadings were significant for all items. ICC (1,1) showed moderate test-retest reliability.ConclusionThe Japanese version of the MCLHB-DRR test showed high reliability and validity among Japanese older adults.