Poor Stroop performances in 15-year-old dyslexic teenagers

Area of Science:

• Cognitive Psychology
• Neurodevelopmental Disorders

Background:

• The Stroop test is a key tool for studying interference between cognitive tasks, particularly color naming and reading.
• Previous research indicates dyslexic individuals exhibit more errors and longer reaction times in Stroop interference tasks, especially those with lower reading skills.

Purpose of the Study:

• To investigate interference and cognitive flexibility in older dyslexic teenagers using a modified Stroop test.
• To assess the impact of saccadic eye movements on Stroop task performance in dyslexic adolescents.

Main Methods:

• A modified Stroop test with four conditions: color naming, reading, interference, and flexibility.
• Inclusion of a flexibility task requiring cognitive switching between naming colors and inhibiting reading.
• Administration of saccade tasks followed by the interference task to evaluate attentional training effects.

Main Results:

• Dyslexic teenagers made more errors and took longer on all Stroop tasks compared to non-dyslexic peers.
• No significant difficulties were observed in the cognitive flexibility task for dyslexic individuals.
• Following saccade tasks, dyslexic participants showed reduced errors in the interference task, suggesting improved visual attention.

Conclusions:

• Older dyslexic adolescents exhibit persistent deficits in inhibitory and attention processes, as evidenced by Stroop test performance.
• The study provides no evidence of impaired cognitive flexibility or mental switching in this age group.
• Saccade training appears to enhance visual attention and reduce interference errors in dyslexic teenagers.