TO THE QUESTION OF A UNIFIED MECHANISM OF METHATESIS IN WORDS AND STATEMENTS
Phonetic metathesis (permutation sounds/syllables in a word) and lexical metathesis (permutation words in sentence) are speech mechanisms dysfunction symptoms. For both the articulatory and language levels, similar features of metathesis have been identified in longitudinal observation of preschoolers. During metathesis, an element of structure is placed in the left position, which at an early stage of development served as the only signifier for a given meaning. Metathesis doesn't affect linear structures. However, the elements are permuted in boundary of structures, most important to encode a meaning: prosodic core of word, and hierarchy of substantive lexemes. Results confirm, that ontogenesis of speech is reflected in patterns of metathesis. Probably strategy of the early ontogenesis (encoding a meaning with a singleton signifier: syllable /holophrase) in conflict with strategy for deploying multielement signifiers is the general mechanism of metathesis at motor and language levels.