This is about the cognitive process for verbal communication. 3 inputs = speech, picture and print, 2 outputs = speech and print. Semantic system = has conceptual system (the idea of what you want to say) and semantic lexicon (holds the meanings of a word). Phonological output lexicon it holds the syllables, phonemes and positions of words; frequency effect, phonological output buffer = put together all the phonemes of the word and hold the word in mind, articulation plan, word length effect, phonological input buffer = when we hear the words, same role as the output buffer.