It is a way to quantify speech ability. It is calculated by dividing the number of morphemes (see morphemes) by the number of utterances. (see utterances). Higher MLU’s indicate higher proficiency with the language.
A combination of both fluent, like Broca’s aphasia, and nonfluent, like Wernicke’s aphasia, aphasia in which both receptive and expressive language skills are impaired, but the patient has strong repetition skills.
See also Aphasia, Transcortical Aphasia, specific types of aphasia.
The smallest unit of meaningful language.
Free morpheme – a morpheme that can stand alone
Bound morpheme – is a morpheme joined to a free morpheme which can indicate:
Plural / singular – example car(s),
Positive / negative – example (un)friendly
Tense – example Jump(ed), jump(ing)
Degree in adjectives – example hard(er)
Possessive – example Sara(‘s)
Affixation – the process of adding a bound morpheme to a root word to change the word’d meaning.