This investigation shows that a non-English portion of the universal initial-cluster hierarchy is cognitively represented in monolingual English-speaking children and adolescents. Since the representation is stronger in adolescents, the universal structure of the hierarchy may be due to a universal acquisition process rather than to innate linguistic content.
+CCVC+ syllables were developed representing seven types of initial non-English consonant clusters, from a universal hierarchical ordering of the type IF +WX IS AN INITIAL CONSONANT CLUSTER IN A LANGUAGE, THEN + YZ IS ALSO AN INITIAL CONSONANT CLUSTER IN THAT LANGUAGE (Greenberg 1965), for which markedness matrices have been developed (Cairns 1969). Children (N = 40) and adolescents (N = 40) listened to a tape and read a corresponding written representation of twenty-four pairs of syllables which differed only in their initial cluster. Subjects were to decide which syllable in each pair probably occurs in more languages. Both adolescents and children were able to reconstruct that portion of the phonological hierarchy which was tested, although adolescents did so significantly better than children. The effect of psychological distance from English (Greenberg & Jenkins 1964) was demonstrated on the same subjects with separate materials, but did not account for the hierarchy effects, since the syllables were controlled for that variable.
Finally, responses of subjects confirmed a theoretical error in previous works, suggesting an alternate arrangement of part of the phonological hierarchy.