Questions and Answers
What is a morpheme?
How many morphemes are in the word 'unhappiest'?
3
How many morphemes are in the utterance 'I wanna go see daddy do/ing'?
7
According to the rules, how should 'doggie' be counted?
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All ritualized deduplications are counted as separate morphemes.
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What is the formula for calculating MLU?
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What should you do if an utterance contains more than 2 clauses?
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The MLU is calculated by dividing the total number of __________ by the total number of utterances.
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Should you count unintelligible utterances in your final tally?
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You should count individual utterances of 'yes', 'no', and similar responses multiple times.
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Study Notes
Morphemes
- Smallest units of meaning in a word, classified as bound or free morphemes.
- Example: "unhappiest" consists of 3 morphemes: un (B), happi (F), est (B).
- Example: "girls" consists of 2 morphemes: girl (F), s (B).
Counting Morphemes
- Examples of utterance morpheme counts:
- "Bye-bye Mommy" = 2 morphemes
- "Car go/ing" = 3 morphemes
- "I wanna go see daddy do/ing" = 7 morphemes
- "Yup" = 1 morpheme
- "There/'s your mommy/'s cup" = 6 morphemes
- "Nigh-night baby" = 2 morphemes
- "I don't know" = 1 morpheme
- "Here/'s the baby go/ing" = 6 morphemes
- "The girl/'s mother slow/ly fill/ed the bucket with water" = 12 morphemes
Rules for Calculating MLU
- Ritualized deduplications and compound words are counted as one morpheme (e.g., "night-night").
- Words like "doggie" are considered a single morpheme.
- Only the first instance of exact utterances should be counted.
- For unintelligible words, mark each syllable with "x" and do not include that utterance in the final count.
Additional Thoughts on Utterances
- If an utterance has more than 2 clauses connected by conjunctions (like "and," "but," "or"), separate it into distinct utterances.
- For long, run-on sentences without natural boundaries, only count two clauses together.
MLU Calculation
- Mean Length of Utterance (MLU) is calculated as total number of morphemes divided by total number of utterances.
Calculating MLU Practice
- Use a transcript for practice, focusing on the child's utterances only.
- Number complete and intelligible utterances.
- Separate free and bound morphemes using a "/".
- Count morphemes per utterance.
Guidelines for PBL Project
- Transcribe both child's and adult's utterances for analysis.
- Analyze only the child's utterances for morpheme counting.
- Count utterances like "yes," "no," etc., only once to avoid skewing results.
- Do not include unintelligible, incomplete, or interrupted utterances in calculations.
- Calculate total number of morphemes and divide by total utterances (aim for 100).
- Compare child's MLU to standard tables for interpretation.
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Description
This quiz focuses on the concept of Mean Length Utterance (MLU) in the context of morphemes. It includes definitions and examples to help you understand how to count morphemes in various utterances. Test your knowledge on identifying and calculating MLU effectively.
