Lexical and Semantic Development

Lexical and Semantic Development

1. Key Terms

   • Lexical development
     • Acquisition of words
   • Semantic development
     • Acquisitions of meanings associated with words
   • Vocab Aquisition never ends

2. Rate of Acquisition

   • End of 1st year
     • Begins speaking
   • 18 months
     • 50 word vocab
   • 2 years
     • 200 word vocab
   • 5 years
     • 2000 word vocab
     • Abstract nouns begin to be used
   • 7 years
     • 4000 word vocab
   • New words meaning isn't always understood
     • More time to acquire adittional knowledge

3. First Words

   • Predictable patterns in words/ word classes
   • Usually
     • familiar people
     • Objects
     • Social interaction

4. Word Classes

   • Grammatical Function Words
     • Abscent in early language acquisition