Forward and backward digit span difficulties in children with specific learning disorder.

Area of Science:

• Neuroscience
• Developmental Psychology
• Educational Psychology

Background:

• Specific learning disorder (SLD) impacts academic achievement.
• Working memory is crucial for cognitive functions.
• The Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV) assesses cognitive abilities.

Purpose of the Study:

• To compare forward and backward digit span performance in children with SLD versus typically developing children.
• To investigate the relationship between digit span performance, General Ability Index (GAI), and SLD subtypes.
• To examine the influence of age on working memory deficits in children with SLD.

Main Methods:

• Utilized the forward and backward digit span tasks from the WISC-IV.
• Compared performance between a large group of children with SLD and a matched group of typically developing children.
• Analyzed correlations between digit span scores and GAI, considering SLD profiles and age groups.

Main Results:

• Children with SLD exhibited greater difficulty with the forward digit span task than the backward digit span task.
• Digit span impairments were observed in children with SLD even with a normal GAI.
• Working memory deficits were more pronounced in older children with SLD and in those with mixed disorder diagnoses.

Conclusions:

• Working memory deficits, particularly in forward digit span, are a significant feature of SLD.
• The findings highlight the specific nature of cognitive challenges in children with SLD, irrespective of overall intellectual ability.
• Age and specific SLD subtypes influence the severity of working memory impairments.