The aim of this study was to explore the relationship between the three main executive functions (i.e., inhibition, working memory, and flexibility) and three steps of social information processing model (SIP; Crick & Dodge, 1994). Participants were 42 young people (13 years old 5 months, SD = 28 months) with mild level of intellectual development disorder (MIDD) or borderline intellectual functioning (BIF). The youths' relatives completed a questionnaire on the behavioral expression of executive functions (BRIEF), and each participant watched a video of an ecological social situation, then answered questions relating to the SIP model. The results offer interesting insights into the link between encoding and inhibition, and the influence of the type of intention attribution on inhibition and working memory.