PSYC3311 Lecture Notes - Lecture 8: Phonological Dyslexia, Dyslexia, Middle-Earth Dwarf Characters
Week 4 lec 2
Last lec:
• Print – sound
• Dual route model – coltheart
•
• Support comes from regularity effect. Regular words- both pathways provide same output
but in other words- not the same output
Cognitive neuropsychological data
- Interesting symptoms shown by acquired dyslexia (individuals who can read perfectly well
but then had trauma to brain and resulted in reading dysfunction)
Surface dyslexia
- Reg: coin – say correctly
- irreg: pint → they tend to regularise these words and pronounce it as /pInt/
o eg sweat
- Non: flink – say correctly
- So what are they missing? W irreg ords they do’t hae access to the lexical pathway
Phonological dyslexia
- Dysfunction sub lexical pathway and only have lexical pathway available
- Irreg and regular words- they’re fie
- Non words- they have a problem w
o Cos non words r not stores lexically. Only way to say it is thru sub lexical pathway
which is damaged to these dyslexics
- Former dean- did’t read e aes out properly.
Double dissociation – this says that u have both processes cos u can tease them apart. Ppl can have
one and not the other and vice versa
Other than the regularity effect, support for the dual route model comes from surface dyslexia
(regularisation of irregular words) versus phonological dyslexia (inability to name nonwords).
The former is consistent with a disrupted lexical route and the latter with disrupted
sublexical route.
But:
Consistency effect (e.g., Glushko, 1979, Jared, 2002 – before coltheart even came up w dual
route model, jared had more convincing argument for coltheart to realise it was a problem) is
incompatible with Dual- Route model: Longer naming latencies to the regular word HINT than
the regular word COIN. The body -INT has an inconsistent pronunciation while -OIN has a
consistent pronunciation.
- Hint: H is onset. I is vowel. NT is coda. INT is body
find more resources at oneclass.com
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Document Summary
Last lec: print sound, dual route model coltheart, support comes from regularity effect. Regular words- both pathways provide same output but in other words- not the same output. Interesting symptoms shown by acquired dyslexia (individuals who can read perfectly well but then had trauma to brain and resulted in reading dysfunction) Reg: coin say correctly irreg: pint they tend to regularise these words and pronounce it as /pint: eg sweat. W irreg (cid:449)ords they do(cid:374)"t ha(cid:448)e access to the lexical pathway. Dysfunction sub lexical pathway and only have lexical pathway available. Non words- they have a problem w. Irreg and regular words- they"re fi(cid:374)e (cid:449: cos non words r not stores lexically. Only way to say it is thru sub lexical pathway which is damaged to these dyslexics. Former dean- did(cid:374)"t read (cid:374)e(cid:449) (cid:374)a(cid:373)es out properly. Double dissociation this says that u have both processes cos u can tease them apart.
