Behaviors scale towards sustainable nutrition: development and validity-reliability analysis

Purpose The evaluation of sustainable eating behaviors of individuals who constitute the society is important in the interpretation of both health-related and environmental effects. Therefore, this study aims to develop a valid and reliable scale to assess the sustainable food consumption behaviors of adults living in Turkey. Design/methodology/approach The validity of the scale was evaluated by using the factor analysis, correlation analysis and comparison of the lower and upper 27% groups with the t-test technique. Cronbach’s alpha (CA), split-half, parallel and strict criteria were used to determine the internal consistency of the scale, and the Pearson correlation analysis was conducted for the test and retest. The explanatory factor analysis and confirmatory factor analysis were applied to test construct validity. Findings The total variance rate explained by all the factors was 77.03%. CA value of the scale was 0.92, and the test–retest reliability coefficient was 0.96. The difference between the lower and upper 27% group means was significant at the p < 0.05 level. The factor structure of the scale was confirmed by the results of the confirmatory factor analysis. Originality/value There are scales in the international literature that have been validated to evaluate various aspects of behaviors related to sustainable food consumption (Tobler et al., 2011; Verain et al., 2015). However, to the best of the authors’ knowledge, there are no validity and reliability studies of a scale developed in Turkey on sustainable food consumption of adults.