The model of the Predicate Mental Logic developed by Braine and O'Brien (1998) is an extension of the Proposition Mental Logic. The predicative logic include quantifiers as "all", "the majority", "some", "none", among others. According to Braine (1978), the mental logic is not equivalent to the formal logic thaught in the school. Children's comprehension of universal quantifiers therefore, provides subsidy to buiding hypothesis about the mental logic nature. In this study, children from 4 to 7-year-old, of medium and low socioeconomic levels, of private and public schools, were interviewed with a set with 4 drawings, corresponding to the 4 quantifiers. It was asked to the children to indicate the figure relating to the read sentence. The statistic analysis showed that the quantifier "none" obtained significant more correct responses than the others three. The quantifier "all" obtained more correct responses than "some" and "the majority". The 4-year-olds offered less correct responses than the other ages, the same occured with children from low socioeconomic level when compared to those from medium socio-economic level.
Predicative Mental Logic; Quantifiers; Propositions
