Transcription of Early Morphological Development
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Early Morphological Development
Early Morphological Development Morphology is the aspect of language concerned with the rules governing change in word meaning. Morphological Development is analyzed by computing a child's Mean Length of Utterance (MLU). Usually, a sample of 50 to 100 utterances is analyzed to draw conclusions about the child's overall production. Each word a child produces is broken down into morphemes . A morpheme is the smallest, indivisible unit of meaning. For example, the word walk is one morpheme, while walked is two morphemes : Walk . carries its own meaning and ed signifies past tense. Young children often combine words to convey one meaning or idea. Consequently, words such as gonna count as one morpheme. As adults, we understand that gonna really consists of both going . and to , each having meaning. After counting the morphemes for each of the child's utterances, they are totaled and divided by the total number of utterances. The formula is as follows: MLU= Total number of morphemes Total number of utterances A child's MLU typically corresponds closely to their age.
Morphological acquisition is best outlined by Brown’s Fourteen Grammatical Morphemes. The chart below details at what age each morpheme typically emerges. Morpheme Example Age of Mastery* (In Months) Present Progressive – ing Mommy driving 19-28 In Ball in cup 27-30 On Doggie on sofa 27-33 Regular plural -s Kitties eat my ice cream.
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