In this study, we investigated the impact of a mobile eco-feedback application on a group of university students' behavior in four behavioral domains: proecological behavior, frugality, equity, and altruism, and the sustainable practices of this population. With the use of a quasi-experimental pretest-posttest design that combined control and experimental groups, students completed a validated sustainability behavior questionnaire pre- and postintervention. Analyses were non-parametric, including Mann-Whitney U tests for baseline equivalence and modified Wilcoxon signed-rank tests for within-group change. Participants from the experimental group showed significantly greater gains in proecological behavior, frugality, and altruism than the control group, with only minor improvements in both groups. These findings indicate that personalized digital feedback may be more powerful than that directly conveyed by traditional instruction and potentially, the use of mobile technologies to close the continuing value-action gap in higher education.
