Chapter 6 Part 2 Flashcards
Percent of words that are understood
Intelligibility
By 16 months we can understand ___% of what they say
25%
By 24 months we can understand ___% of what they say
65%
By 36 months we can understand ___% of what they say
80%
Smallest unit of meaning that cannot be divided into smaller meaningful parts
Morphemes
Present tense of verbs (“I am jumping)
Present Progressive
When are present present progressives developed?
19 - 28 months
Plural verbs that we put the -s at the end of a sentence (bags, tables)
Regular plural
When are regular plurals developed?
27 - 30 months
When do in (preposition) develop? (in the car)
27 - 30 months
When do on prepositions develop?
31 - 34 months
When do possessive ‘s develop? (Mom’s car)
31 - 34 months
What is an example of irregular past tense?
Go and went
When do irregular past tense develop?
43 - 46 months
Five stages describing MLU length and development in complexity of syntax
Brown’s stages of syntactic development
Measurement of early syntax development
Mean length of utterance (MLU)
Single word utterances; nouns and uninflected verbs
Stage 1
What is the age range for stage 1 syntactic development?
12-26 months
Two element sentences; clause development
Stage 2
What is the age range for stage 2 syntactic development?
27-30 months
Three element sentences; independent clause development
Stage 3
What is the age range for stage 3 syntactic development?
31-34 months
Four element sentences; independent clause development
Stage 4
What is the age range for stage 4 syntactic development?
35-40 months
Connecting devices emerge
Stage 5
What is the age range for stage 5 syntactic development?
41-46 months
What is the MLU for stage 1?
.99 - 1.64
What is the MLU for stage 2?
1.47-2.37
What is the MLU for stage 3?
1.97-3.11
What is the MLU for stage 4?
2.47-3.85
What is the MLU for stage 5?
2.96-4.60
