Figure 2
From: A different vision of dyslexia: Local precedence on global perception
Computerized Navon task and results of Experiments 3, 4 and 5. (a) In the global task, children were invited to discriminate the larger figures (triangle or square) by pressing two different buttons of keyboard, independently from the local figures. In contrast, in the local task, children were invited to discriminate the smaller figures, independently from the global figures. Global and local figures could be congruent (for example a square of squares) or incongruent (a square of triangles). (b,c) Experiment 3. An unselected group of children with dyslexia (D) showed greater local interference than TR in global task (b) and lower global interference in the local task (c). (d,e) A subgroup of children with dyslexia of Experiment 3 were treated with action video game (AVG) and non action video game training in Experiment 4. Only after the AVG training children with dyslexia showed a significant reduction of local interference effect in the global task (d) and a significant increase of global interference effect in the local task (e). (f,g) Experiment 5. In an unselected group of prereading children, global and local visual perception at kindergarten were measured and their reading abilities at the end of the first grade were longitudinally investigated. Future PR showed already at pre-reading stage a greater local interference than future TR in the global task (f) and lower global interference in the local task (g). Data are mean ± standard errors (SEM).
