Specific arithmetic calculation deficits in children with Turner syndrome

Area of Science:

• Neuroscience
• Developmental Psychology
• Genetics

Background:

• Turner syndrome (TS) is a genetic condition affecting females, often associated with cognitive challenges.
• Arithmetic processing is crucial for academic and daily functioning.
• Previous research suggests potential learning difficulties in individuals with TS, but specific arithmetic profiles are less understood.

Purpose of the Study:

• To investigate arithmetic processing skills in girls with Turner syndrome (TS).
• To compare the performance of TS subjects with age-matched controls on standardized arithmetic tests.
• To identify specific areas of arithmetic deficits and contributing factors in TS.

Main Methods:

• Study 1: Assessed arithmetic skills using the Wide Range Achievement Test-Revised (WRAT-R) in 45 girls with TS and 92 controls.
• Study 2: Evaluated arithmetic performance with the Keymath Diagnostic Arithmetic Test in 10 subjects with TS and 31 controls.
• Utilized error analyses to examine qualitative differences in problem-solving strategies.

Main Results:

• Girls with TS showed significant underachievement in arithmetic, particularly in fact retrieval and procedural knowledge.
• TS subjects demonstrated difficulties with arithmetic procedures (subtraction, multiplication) and were more prone to errors in step execution.
• While TS subjects relied more on verbal than visual-spatial abilities, the latter were linked to specific procedural skills.

Conclusions:

• Arithmetic difficulties in females with TS stem from inadequate procedural skills and poorer fact retrieval, especially under timed conditions.
• Age-related differences in performance were observed, suggesting developmental impacts on arithmetic skills in TS.
• Findings indicate that deficits are not solely attributable to visual-spatial abilities but involve complex processing challenges.