This article presents and discusses data on nominative and object clitics used by twelve monolingual French-speaking children aged 2;0 to 2;7 years in a spontaneous interaction setting and in an elicited production task. It is shown that nominative clitics surpass object clitics, and that reflexive clitics fare better than accusative clitics. It is argued that these two dissociations are compatible with the computational complexity hypothesis put forth by Jakubowicz and Nash (to appear), applied to the analysis of third person Romance pronominal clitics proposed by Jakubowicz, Nash, Rigaut, and Gérard (1998).