Symbolic exact addition is predicted by symbolic number line representation and the phonological loop, reflecting phonological storage of numerical information¶

Claim · All claims
Evidence · 1 study · associational r2 · q3
Currency · newest study 2015 · checked against its sources 2026-10-20 (automated, 1 of 1 entry) · not reviewed by a person

Subclaims¶

q3 i? Symbolic number line representation and PL measures were the significant predictors of symbolic exact addition. → Xenidou-Dervou 2014

Evidence¶

Xenidou-Dervou 2014¶

Xenidou-Dervou, I., van der Schoot, M., & van Lieshout, E. C. D. M. (2015). Working memory and number line representations in single-digit addition: Approximate versus exact, nonsymbolic versus symbolic. Quarterly Journal of Experimental Psychology, 68(6), 1148–1167. doi:10.1080/17470218.2014.977303

q3 · i? · associational · r2

Stepwise regression on the familiar "a + b = c" format; "the symbolic mental number line representation task, t(102) = -3.89, p < .001, and the PL, t(102) = 2.97, p = .004" were the significant predictors, indicating phonological storage in the symbolic code.

"In the case of symbolic exact addition, as expected, children's performance in the symbolic mental number line representation task, t(102) = -3.89, p < .001, and the PL, t(102) = 2.97, p = .004, were identified as the significant predictor variables."

Discussion¶

Learner Variables¶

• Number Sense — predictor: learners who differ on it differ in outcomes

Related Claims¶

• Numerical working memory predicts decimal number line estimation accuracy — related
• Nonsymbolic exact addition is predicted by the VSSP plus the CE and symbolic number line estimation, suggesting an alternate transcoding to the symbolic code — related
• Symbolic approximate addition is predicted by nonsymbolic number line estimation, the VSSP and the CE, consistent with transcoding to the nonsymbolic code — related
• More accurate symbolic number line representations relate to better performance in exact, but not approximate, addition formats — related
• The visuospatial sketchpad is the best and only unique predictor of kindergarteners' nonsymbolic approximate addition — related
• Kindergarteners perform significantly better in nonsymbolic than symbolic single-digit addition problem formats — related