This study compares the unidimensional and multidimensional measures of involvement by examining their predictive validity on satisfaction and loyalty. By adopting the three-step approach comparing correlated correlations of non-nested models involving Steiger's Z test, this study found that the multidimensional measure of involvement predicted satisfaction and loyalty better than the unidimensional measure within the same data. Therefore, tourism researchers are suggested to adopt the multidimensional measure of involvement to maximize the predictive power of these two constructs. Attention also needs to be paid to its specific dimension. The dimension of attraction had the highest predictability for both satisfaction and loyalty, followed by social identity for satisfaction and social identity and social for loyalty. Hence, with limited resources, is suggested that these dimensions be used.