Morphological representation and processing

• Computational system


  Words are generated by taking a root and adding an affix (combinatoric symbolic rule)
• Lexical system


  Morphologically complex words are stored / processed as wholes in the lexicon
• Language impaired individuals, particularly language impaired children experience morphological difficulties
• Psycholinguistic models of how morphologically complex words are stored and processed have been used to explain these difficulties
• Computational


  1. tie

  2. fill-

  3. -ed

  4. book

  5. shelf

  6. untie

  7. filled

  8. book shelf

  9. un-
• Whole-entry


  1. tie

  2. fill-

  3. -ed

  4. book

  5. shelf

  6. untie

  7. filled

  8. book shelf

  9. un-
• Productive usage


  • He merengu-ed his way onto the dance floor
  • She was so angry that she crutch-ed her boyfriend
  • There are two wug-s
  • Look! The dog is meek-ing
  • The dog was un-meek-able
• Berko-Gleason's 'Wug test'
• Morphological movement, stranding and substitution errors

  • She wash upp-ed the dishes
  • We have a lot of church-es in our minister
  • She always pack-s a keep
• Morpho-phonological parsing


  1. miss

  2. fill-

  3. -ed

  4. book

  5. shelf

  6. untie

  7. filled

  8. book shelf

  9. /d/
• Morpho-phonological parsing


  1. miss

  2. mile

  3. -ed

  4. book

  5. shelf

  6. untie

  7. filled

  8. book shelf

  9. /d/

  10. mile

  11. mild
• Morpho-phonological parsing


  1. fill

  2. belt

  3. -ed

  4. book

  5. shelf

  6. untie

  7. filled

  8. book shelf

  9. belt
• Participants took a relatively long time to decide that mild and mile were different words
• Morphophonological parsing


  When a word could potentially be an inflected form (e.g. mild), due to its phonology, we automatically treat it as morphologically complex

  
• Phonotactic evidence
• Non-word roots
• Multiple meanings
• Psycholinguistic evidence
• Evidence for 2 systems
• Gradient phenomena
• Dual Route Model
• The model
• Criticism of Dual Route model
• (1) Pseudo-regularity