Development of spatial biases in school-aged children

Area of Science:

• Cognitive Development
• Neuroscience
• Developmental Psychology

Background:

• Spatial attention biases are measurable in adults using the line bisection task and linked to the fronto-parietal attention network.
• Previous developmental studies on spatial biases produced inconsistent results due to methodological limitations like small sample sizes and motor confounds.

Purpose of the Study:

• To investigate the developmental trajectory of spatial attention biases in children.
• To explore the relationship between spatial biases and reading ability predictors in early elementary grades.

Main Methods:

• A perceptual, computerized line bisection task was administered to 459 children (grades 1-8) and 61 college freshmen.
• Spatial biases were analyzed across different grade levels.
• Correlation between spatial bias and performance on the rapid automatized naming test was assessed.

Main Results:

• A significant leftward spatial bias was observed in early elementary grades, which progressively diminished in older children.
• The degree of leftward bias in early grades correlated with better performance on the rapid automatized naming test.
• This suggests a potential link between early spatial attention and reading development.

Conclusions:

• Spatial attention biases undergo significant development throughout childhood, decreasing with age.
• Early leftward spatial biases may be influenced by reading experience, indicating an interaction between the attention and reading networks.
• The findings provide insights into the developmental interplay between attention, reading, and cognitive networks.