Elissa Newport(1990) and her colleagues studied the ability of deaf users Native signers (who were exposed to ASL from birth), Early signers (who began using ASL between four and six years of age), However, on tests focusing on grammatical markers, the Native group used the markers more consistently then the Early group who, in turn, used them more consistently then the Late group. Adopted language to be used in a positive way. No different with native speakers. Adoptee's use of language in society itself. Therefore, it makes the difference between an adopted and a native language that these children not experience in other societies.