This paper analyzes the effects of a support aimed at favoring the social regulatory processes in a computer-supported collaborative learning (CSCL) environment, specifically in a comprehension task of a multimedia text about Psychology of Communication. This support, named RIDE (Saab, van Joolingen, & van Hout-Wolters, 2007; 2012), consists in the instruction, prior to the learning task, from a series of communication rules extracted from literature about effective collaboration. The study was carried out with 60 college students, grouped in 20 triads. Each triad was assigned to one of two conditions: with social regulatory support or without support. The students did a face-to-face collaborative task of reading comprehension, using the strategy of collaborative construction of concept maps from the information presented in the multimedia material. The performance was valued according to the quality of the concept maps, and the level of collaboration perceived by each member of the teams was tested. We found that the condition with social regulatory support promoted higher quality concept maps; however, the social regulatory support had significant effect on the levels of collaboration perceived by the team members. In the conclusions are pointed the reach of these results for the design and implementation of collaborative interventions, based on the use of multimedia materials.