Abstract. Aiming at improving the design of cognitive stimulation (CS) applications for elders, we have conducted studies that allowed us to gain an understanding of the nature of CS activities, and to envision how we might support them using pervasive technologies. One such support is InTouchFun, a CS application that allows for the integration of remote social family network members into an elder's CS activities. Although the results of a TAM-based usability evaluation provided evidence that the tool was perceived as useful, easy to use, and generating pleasurable user experiences, we did not have insights into which were the application's features that fostered these results. In this paper, we present and discuss the results of a further evaluation centered on the analysis of the interactions observed during a CS session, and which provide evidence to determine the features that fostered reaching goals such as engagement, satisfaction, enjoyment and a low anxiety level.