Abstract
The paper provides the morphologic and syntactic analysis conducted on the basis of two videos with Child X. The first video was recorded when the girl was two years and nine months old, and the second one was made when she was nine months older. The results of the analysis show that the girl meets the standards expected for her age. Her MLU levels are 2.325 and 3.57, which refer to II and IV developmental stages of Brownâs scale respectively.
The analysis of fourteen Brownâs grammatical morphemes shows that Child X is between IV and V stages. The longest utterance in the first video has five morphemes in it, and the longest one in the second video contains fourteen morphemes. Although particular girlâs sentences sound funny because of involuntary repetitions, the developmental level expected for her age has already been reached.
Morphologic Analysis
The Childâs Mean Length of Utterance
The following table presents calculations for the first transcript:
MNU for the first transcript is 93/40, which is approximately 2.325.
The table above contains the calculations for the second transcript:
MNU for the second transcript: 236/66 â 3.57.
The number of utterances is bigger in the second transcript, and they are longer in general. In the first video, Child X is 33 months old, and according to the interpretation of MLU, her value should be between 2.5 and 3.0. In reality, it is a bit less. In the second video, Child X is 42 months old, and MLU should be approximately 3.75-4.5. Again, the calculated value is a bit less. However, the deviation is minor, and MLU still should be considered normal.
Brownâs 14 Morphemes
At the age of two years and nine months, Child X already uses the majority of Brown’s 14 grammatical morphemes. Only six of them are not used: regular past, irregular third person, both of the prepositions, contractible and uncontractible auxiliary. At the age of three years and six months, Child X has learned the prepositions (both in and on), contractible and uncontractible auxiliary. Regular plural and uncontractible copula, which have already been used by the girl in the first video, are not present in the second. However, that is of minor importance since they have already been learned. So, at the age of three years and six months, the girl does not use only two Brownâs morphemes: irregular third person and past regular tense.
Other Grammatical Morphemes
Apart from Brown’s 14 grammatical morphemes, Child X uses some others. There are conjunctions â the word and in both of the transcripts: âMommy and Daddyâ, âFace and noseâ, âItâs thicker and thickerâ (2 year, 9 month-old Mia making pudding, 2014; 3 year, 6 month-old Mia making pudding, 2014). In the second transcript, comparatives are also used: âItâs thicker and thickerâ (3 year, 6 month-old Mia making pudding, 2014). Additionally, in the second video, Child X also shows knowledge of modal verbs, particularly the word can: âI can open itâ, âCanât do itâ (3 year, 6 month-old Mia making pudding, 2014).
Benefits and Limitations of Using Brownâs 14 Morphemes to Analyze the Level of Childâs Development
Brownâs list consists of the morphemes of varying complexity. Thus, every child learns them in more or less similar order, which lets us connect the number and type of acquired morphemes to a particular developmental stage. Besides, Brownâs morphemes are linked to MLU: the higher MLU, the more morphemes a kid uses. When childâs MLU exceeds 4.5, he or she already knows all fourteen Brownâs morphemes.
However, this method of analyzing the childâs development has several limitations. The most significant one is that the analysis is made using transcripts of a limited number of utterances. Hence, a child can already know a particular morpheme but still not use it in a given transcript (as it has happened with regular plural and uncontractible copula in the second Child Xâs video). Another significant drawback of Brownâs method is that the list does not contain all grammatical morphemes. As it can be seen, Child X has acquired some morphemes that are not on the list.
Syntactic Development Analysis
Developmental Stage
At the age of two years and nine months, the girlâs MNU is approximately 2.325, which refers to the morphological development phase (II), according to the list of Brownâs developmental stages. At the age of three years and six months, the girl is at the stage of embedding of sentence elements (IV) since her MNU is 3.57. However, considering the analysis of the use of fourteen morphemes, the girlâs development level is a bit higher, between IV and V stages.
Distributional Analysis
The following table presents the number of utterances per morpheme length for both videos. The most common sentence length in terms of morphemes is one in each case.
The Childâs Ten Longest Utterances
The longest utterances of the first video:
- Mommy getting really mad.
- Yeah, I have a mouth.
- And this is daddyâs.
- He needs a mouth.
- Itâs not open?
- Itâs still drippy.
- Itâs thick.
- I hold that.
- I did it!
- I stand up.
The longest utterances of the second video:
- Look, itâs thicker and thicker but itâs not thicker.
- You eat a little bit of cake and thatâs it.
- And my daddy cant/ um/ daddy cant/ my daddy said I cant/ um/ I cant/ um/ sit here/.
- No/ I/ My daddy said I cant/ Um/ Stand on here.
- When I a baby/ I donât/ I cant eat/um/ cake anymore.
- Yeah we canât sit on it like Tyler.
- We need to put some milk in it.
- Or you canât do it like this.
- Can I pour it in there?
- Because itâs not thick yet.
The utterances above support Brownâs developmental stage theory: in the first video, the girl only starts to use the basic morphemes while in the second one she already tries to build sentences. However, some of them still sound funny because of grammatical errors and involuntary repetitions.
Conclusions
To conclude, both morphologic and syntactic analysis of the childâs speech have been conducted in the paper. The morphologic analysis focuses on such aspects as the mean length of utterances (MLU) and Brownâs fourteen morphemes. The girlâs MLU in the first video is approximately 2.325 and in the second one is 3.57, which, according to the Brownâs scale of developmental stages, refer to the morphological development phase (II) and the phase of embedding of sentence elements (IV) respectively.
At the same time, the analysis based on the fourteen grammatical morphemes shows that Child X is on a bit higher level of development, specifically between IV and V stages. The syntactic analysis reveals that the longest utterance in the first case consists of only five morphemes while the longest one in the second case has fourteen of them already. Although some of the girlâs sentences are funny because of grammatical mistakes or involuntary repetitions, the development expected for her age is evident.
References
2 year, 9 month-old Mia making pudding Session #1 (10/25/09) (2014). Web.
3 year, 6 month-old Mia making pudding Session #2 (7/30/10) (2014). Web.