<p>The PIBA, it’s an individual intervention, nevertheless, evidence supports that a group application could be a cost-effective alternative without reducing the efficacy of the treatment. The objective was to analyze if PIBA is equally effective when performing the application in group format; individual and group interventions were carried out with cases of PIBA, analyzing variations in the consumption pattern and the changes in the self-efficacy for consumption control. The results show a statistically significant decrease in the consumption of adolescents in both applications; we also found that there are no significant differences between using the PIBA in its group or individual modality, both modalities produce an equivalent decrease in consumption. Finally, the results are discussed with their scopes and limitations both practical and methodological.</p>