Reading and coherent motion perception in school age children

Area of Science:

• Developmental Psychology
• Neuroscience
• Educational Psychology

Background:

• Understanding the developmental trajectories of cognitive functions like reading and motion perception is crucial for identifying learning differences.
• Previous research has established general patterns, but specific age-related changes and variations within populations require further investigation.

Purpose of the Study:

• To evaluate the age-related developmental trajectories of reading fluency and global motion perception in a large cohort of school-aged children.
• To identify potential differences in these developmental paths between typically developing children and those identified as weak readers.

Main Methods:

• Assessed reading rate using a standardized test on a medium-difficulty passage across various age groups.
• Determined coherent motion perception thresholds using an adaptive psychophysical protocol with varying dot velocities (2, 5, 8 deg/s).
• Classified participants into strong and weak readers based on performance relative to age-based percentiles.

Main Results:

• Reading fluency trajectories in Latvian children mature around 12-13 years, with slow but significant improvement continuing thereafter.
• Weak readers (below 10th percentile) showed no significant reading fluency saturation by age 18.
• Coherent motion detection thresholds decreased with age and did not reach saturation, with slower dot velocities revealing significant differences between strong and weak readers.

Conclusions:

• Reading fluency development shows a plateau in mid-adolescence for typical readers, but weak readers continue to develop more slowly.
• Global motion perception is a continuously developing skill throughout childhood and adolescence.
• Early identification of reading difficulties may be supported by understanding the interplay between visual perception and reading development.