Disabled readers: their intellectual and perceptual capacities at differing ages

Area of Science:

• Educational Psychology
• Developmental Psychology
• Reading Science

Background:

• Reading achievement is influenced by cognitive and perceptual factors.
• Understanding these relationships is crucial for effective reading interventions.
• Previous research has explored intelligence and perception in relation to reading, but age-specific differences require further investigation.

Purpose of the Study:

• To examine the relationship between intelligence and perceptual measures and reading achievement in young and older poor readers.
• To determine how these factors contribute to reading vocabulary and comprehension.
• To explore age-related differences in the predictive power of intelligence and perception on reading skills.

Main Methods:

• Two groups of poor readers (younger: mean age 8.4 years; older: mean age 11.2 years) were assessed.
• Standardized tests were used: Gates-MacGinitie Achievement Test, Peabody Picture Vocabulary Test, Slosson Intelligence Test, Spatial Orientation Memory Test, and Auditory Discrimination Test.
• Statistical analyses were conducted to assess the variance accounted for by predictor variables.

Main Results:

• A combination of intelligence and perceptual measures significantly predicted reading vocabulary and comprehension in both age groups.
• These predictor variables accounted for a greater amount of variance in the reading achievement of younger students compared to older students.
• Perceptual abilities showed a stronger relationship with reading achievement in younger students, whereas intelligence was more strongly related in older students.

Conclusions:

• Intelligence and perceptual abilities are significant predictors of reading achievement across different age groups of poor readers.
• The relative importance of perceptual versus intellectual factors shifts with age, suggesting different underlying mechanisms for reading difficulties.
• Findings question the universal applicability of expectancy formulas for younger disabled readers and the 'learning disabilities' approach for older disabled readers.