L1 Semantic/Lexical Development Flashcards
What is lexical development ?
Learning links between words and their meanings
At 8-10 months, begin to understand about — words
10-150
At 16 months, begin to understand about — words.
90-320
Holophrastic stage
One-word stage
First word, 10-15 months
Many words context bound
First word types
Nouns
Monosyllabic
Labels for common functions (naming, emotions, actions)
Factors that influence early vocab (3)
Phonological structure (ease of articulation)
Cognitive factors (phonological memory PM skills)
Other factors (personality, gender, environmental factors ex first born benefit, socioeconomic factors)
Lexical input from parents (tends to be better)
Quality of input
First 50 words
Naming
Actions
Modifiers
Personal/social
What is a referential vocabulary?
More nouns, analytic style. ( doggie, juice )
What is an expressive vocabulary?
More personal social words or hollistic style (hi, bye-bye, thank you)
Whole object assumption
New word refers to whole object, not just the part
Taxonomic assumption
Words refer to things of the same kind or category
Mutual exclusivity assumption
Only one label for things
Overextensions
Using words in broader context than permissible ( dog for all animals)
Common 1-2 years
Mostly gone by 2.5 years
Underextensions
Use of a word without its full range
Harder to detect
Vocabulary growth 1 year 3 months (understanding)
Fastest child understand 200 words
Slowest child understands only 20
Vocabulary growth 1.5 years (production)
Fastest child produces 70 words
Slowest produces only 10
Word spurt
Rate increase 1-2 words per day
Approx 18 months 50 word mark
100 word mark in some
Not apparent in all children
Fast-mapping
New word linked with underlying concept after brief encounter
Naming insight
Words name objects, all objects have names
Categorization insight
Sorting behavior
