Congenitally blind adults produce more items on phonemic and semantic verbal fluency tasks than sighted controls¶

Claim · All claims
Evidence · 1 study · associational r2 · q3 · i3 large
Currency · newest study 2017 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i3 Congenitally blind participants generated significantly more items than sighted controls on both phonemic and semantic fluency tasks. → Occelli Valeria 2017

Evidence¶

Occelli Valeria 2017¶

Occelli Valeria, Lacey Simon, Stephens Careese, Merabet Lotfi B., Sathian K. (2017). Enhanced Verbal Abilities in The Congenitally Blind. Experimental Brain Research. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5436932/

q3 · i3 · associational · r2

RM-ANCOVA of phonemic and semantic fluency in the same 25 participants. Blind participants produced more items on both fluency types (e.g., phonemic "56.2 ± 2.9" vs sighted "48.1 ± 2.3"), a large effect (d = 1.22).

"RM-ANCOVA of the fluency tasks (within-group factors: phonemic and semantic fluency) showed that the blind (phonemic: 56.2 ± 2.9; semantic: 61.6 ± 2.8) produced significantly more items than the sighted (phonemic: 48.1 ± 2.3; semantic: 50.6 ± 3.3: F1,20 = 8.6, p = .008, d = 1.22; Figure 3B)"

Discussion¶

Related Claims¶

• Congenitally blind adults outperform sighted controls on verbal memory recall across timepoints — related
• Congenitally blind adults show higher verbal backwards digit span than sighted controls — related
• Digit span correlates with phonemic fluency in the congenitally blind but not the sighted — related