Dell Model of Comprehension Flashcards
How does the Dell model of comprehension view comprehension?
As production in reverse
What does the Dell model of comprehension describe?
Comprehension
What levels are there in the Dell model of comprehension?
Features
Phonological
Lexical
Semantic
How do we assess comprehension deficits at the phonological level?
Minimal pairs test: non words and real words (but be aware of the involvement of semantic level)
How do we assess comprehension deficits at the lexical level?
Auditory lexical decision test: required to decide if a spoken word is real or not to decide if there is an entry at that level
How do we assess comprehension deficits at the semantic level?
Auditory synonym judgement: required to decide whether items are true synonyms or not (e.g. ship/boat vs ship/coat)
What identifies a phonological level impairment of comprehension?
Deficit with phoneme identification
Auditory input deficit only
Deficit at this level will affect all consecutive levels
Key identifying factor: minimal pairs
What identifies a lexical level impairment of comprehension?
Deficit with lexical access
Word form deafness
Problem at level of identification of whole word representation
Preserved performance on minimal pair test but impairment of all other tests of auditory comprehension
What identifies a semantic level impairment of comprehension?
Deficit with semantic access: word meaning deafness
Preserved performance of phoneme discrimination and lexical decision tasks but deficit on semantic auditory comprehension
What differentiates a semantic level impairment of comprehension from a general semantic impairment?
Problem with semantic representations involves deficits across modality (spoken and written judgement)
Shows we can have a pure comprehension deficit isolated to auditory input
What does dell model say about production and comprehension?
Share same system
Evidence has confirmed this - if so we could anticipate therapy benefits on both systems at once
