Article

Graphemic Output Buffer (GOB) disorder is defined as difficulty with the serial
output of a sequence of letters in the output stage of the spelling process. In
their rehabilitation study with a GOB patient, Sage and Ellis
( 2006 ) found that
improvement on treated words generalised to untreated words from the same
orthographic neighbourhoods as treated items, but not to other unrelated words.
GOB patients frequently show a bow-shaped accuracy curve across letter positions,
where letters at the middle positions are most error-prone. It may be that
consistent letters at these middle letter positions across neighbourhoods
modulate this effect. Spelling was treated using an Anagram and Copy Treatment
(ACT) and generalisation to three untreated sets was examined: (1) neighbours of
treated words with shared middle letters (e.g., clock-block),
(2) neighbours with
different medial position letters (e.g., clock-click), and (3) unrelated words
(e.g., clock-puppy). Improvement was found for untreated neighbours with shared
middle letters. There was no effect of training on the unrelated word set, and a
negative impact on untreated neighbours with changed middle letters after the
treatment. We attribute these results to top-down support from learned lexical
representations, which facilitate spelling of untreated neighbours with shared
middle letters but impede neighbours with changed middle letters. This latter
result is attributed to interference from neighbours in the trained set
strengthening competing letter representations at middle positions.

Langue : ANGLAIS