The article reports an experiment with subjects aged 14 to 17 years who had to solve proportional-logical formal tasks (balance and proportional comparisons) linked to the INRC group. The aim was to observe 1) if the desired learning takes place, and 2) if subjects� transfer what they have learned to other tasks tied to the same formal structure (INRC group) and to others with different structure (reticle). The results show a moderate success, depending on the treatment, in learning the task that was taught, and little or no transference to logical-formal structures similar to those used for learning.