Disorders Of Sentence Production

Question 1

Levelts model

Answer 1

Same idea as Garrett

1. Message
2. Functional processing
3. Positional processing
4. Phonological encoding
5. To output systems

Question 2

Factors which affect sentence production

Answer 2

Lexical access
Positioning
Morphology

Question 3

Verbs

Answer 3

Hard to generate because:
Can change more morphologically than nouns
Acquired after nouns developmentally
Greater range of meaning

Question 4

Argument and thematic roles

Answer 4

The greater the number of arguments associated with verbs the more difficult its retrieval (argument structure complexity hypothesis, Thompson 2003)

Question 5

Thematic role assignment

Answer 5

Refers to the ability to Map a word or phrase to its correct thematic roles
People with aphasia get confused with the terms agent and theme and working out ‘who does what to whom’
SVO sentences are largely interpreted through information supplied to the verb

Question 6

Active vs passive

Answer 6

Passive sentences are harder as the ordering is not as common
People with aphasia would interpret the noun as the agent
However, can do passive a when thematic roles are not reversible

Question 7

Agrammatism

Answer 7

Breakdown in grammatical structure
Prosodic difficulties
Function words missing
Verbs more severely affected
Comprehension fine at conversational level but breakdown when it’s more complex
Can make accurate grammatical judgments
Have to have production and comprehension difficulties to be Agrammatism

Question 8

Mapping deficits

Answer 8

Have a difficulty in mapping the relations between the abstract functional level and surface syntax at the positional level
Mapping deficit leads to an ability to integrate sentence form and sentence meaning

Question 9

Paragrammatism

Answer 9

Fluent aphasia
Syntax is present but anomalous
Sometimes verbs replacing nouns
Substitution of grammatical markers

Question 10

Garretts model of sentence production

Answer 10

Postulated 5 levels of functionally independent components of normal sentence production
Model top down with no feedback
1. Message level
2. Functional level
3. Positional level
4. Articulately planning