Nonword repetition: effects of item length and complexity

1
Nonword repetition effects of item length and
complexity

• Carolyn McGettigan
• Frank Eisner
• Chloe Marshall
• Sophie Scott

2
Paradigm

• Delayed nonword repetition
• Two factors
• Phonotactic complexity (zero vs. two consonant
  clusters)
• Length (2 vs. 4 syllables)

Length
tok_at_l tegazok_at_l
tronk_at_l tregazonk_at_l
Complexity
3
Procedure
tegazok_at_l
scan
0
3
10
13
perception
rehearsal
production
TR 13 sec Acquisition time (whole brain) 3
sec 40 trials from each condition 40 silent
baseline trials ? 200 trials T1-weighted
structural scan TOTAL TIME IN SCANNER 55 mins
approx
4
Analysis Predictions
Length
16 participants Analysis in SPM Group effects of
Length and Complexity Individual
differences Markers of dyslexia (phonological
memory, naming, spoonerisms)
Complexity
Figure from Jacquemot Scott (2006)