Adults with developmental dyscalculia are impaired in everyday numerical tasks, particularly time estimation, measure, and money usage¶

Claim · All claims
Evidence · 1 study (2 entries) · associational r2 · q3 · i3 large
Currency · newest study 2022 · checked against its sources 2026-10-18 (automated, 2 of 2 entries) · not reviewed by a person · recheck by 2027: baselines and conditions change

Subclaims¶

q3 i3 Adults with DD scored significantly lower than controls on the NADL Informal Test total (r = -0.458, p = 0.001). → Vigna Giulia 2022 q3 i3 Adults with DD scored significantly lower than controls in money usage (r = -0.403, p = 0.003). → Vigna Giulia 2022 (2)

Evidence¶

Vigna Giulia 2022¶

Vigna Giulia, Ghidoni Enrico, Burgio Francesca, Danesin Laura, Angelini Damiano, Benavides-Varela Silvia, Semenza Carlo. (2022). Dyscalculia in Early Adulthood: Implications for Numerical Activities of Daily Living. Brain Sciences. https://doi.org/10.3390/brainsci12030373

q3 · i3 · associational · r2

Wilcoxon rank-sum comparison on the NADL Informal Test completed by 21 participants with DD and 26 controls. DD mean was 19.57 (SD 2.86) versus 21.62 (SD 1.10) for controls, effect size "−0.458", p = 0.001, one-sided.

"TOTAL INFORMAL * 23 19.57 2.86 21.62 1.10 130.5 0.001 −0.458 0.047"

Vigna Giulia 2022 (2)¶

Vigna Giulia, Ghidoni Enrico, Burgio Francesca, Danesin Laura, Angelini Damiano, Benavides-Varela Silvia, Semenza Carlo. (2022). Dyscalculia in Early Adulthood: Implications for Numerical Activities of Daily Living. Brain Sciences. https://doi.org/10.3390/brainsci12030373

q3 · i3 · associational · r2

Money usage subtest of the NADL Informal Test comparing DD and control participants; DD mean 6.95 (SD 0.92) versus 7.62 (SD 0.75) for controls, effect size "−0.403", p = 0.003. Bayes factors confirmed substantial evidence of H1 for money usage.

"Money * 8 6.95 0.92 7.62 0.75 156.5 0.003 −0.403 0.208"

Discussion¶

Learner Variables¶

• Learning Disabilities and Developmental Differences — predictor: learners who differ on it differ in outcomes

Related Claims¶

• Adults with developmental dyscalculia are aware of their numerical difficulties in everyday life — related
• Distance estimation is preserved in adults with developmental dyscalculia — related
• Adults with developmental dyscalculia score significantly lower than controls on the formal NADL test of school-acquired numerical abilities — related
• Numerical difficulties in adults with DD are associated with negative emotions and psychosomatic symptoms traceable to primary school age — related
• Adults with DD show deficient time/duration processing but preserved length processing, with mixed findings across studies — related