International audienceThis article is based upon a survey of personal recollections of young people born in large families and of their parents. It suggests that the temporal socialization of children within their family may or may not contribute to the acquisition of behavioral dispositions aligned with the expectations of education institutions. It distinguishes between two types of intra-family socialization patterns that are socially differentiated. By observing how their parents act and by acting themselves, the children from upper middle-class families who took part in our survey learn to plan and anticipate activities, and to rationalize the use of their time. By being subjected to explicit rules and predictable, deferred and stable ...