Children's knower level of verbal number words is cross-sectionally associated with ANS acuity even after controlling for age and sex¶

Claim · All claims
Evidence · 1 study · associational r2 · q3
Currency · newest study 2016 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? Across preschoolers, children with more advanced verbal number knowledge (higher knower level) had better ANS acuity (lower w) at both Session 2 and Session 5, controlling for age and sex. → Shusterman Anna 2016

Evidence¶

Shusterman Anna 2016¶

Shusterman Anna, Slusser Emily, Halberda Justin, Odic Darko. (2016). Acquisition of the Cardinal Principle Coincides with Improvement in Approximate Number System Acuity in Preschoolers. PLoS ONE 11(4): e0153072. https://doi.org/10.1371/journal.pone.0153072

q3 · i? · associational · r2

Cross-sectional analyses of 42 children (S2) and 39 children (S5) in the six-month longitudinal study. Post-hoc tests showed subset-knowers differed from both CP-knower groups (p < .05 for all four comparisons), but CP-Mappers did not differ from CP-Non-Mappers; the authors call it "the first demonstration of a relationship between knower level and ANS acuity when controlling for age and sex."

"A one-way ANCOVA, with knower level (one-knower, two-knower, three-knower, four-knower, CP-Mapper, CP-Non-Mapper) as the between subjects variable, w as the dependent variable, and age and sex as covariates, revealed a significant effect of knower level on w both at S2, F(5, 37) = 4.00, p < .01, and at S5, F(5, 37) = 4.43, p < .01."

Discussion¶

Related Claims¶

• ANS acuity correlates with later number sets fluency but does not emerge as a unique predictor once symbolic knowledge is controlled — related
• The Who Has More task showed moderate test-retest reliability (r = .46) in preschoolers, and the authors call for more stable ANS measures for this age — related
• Female preschoolers showed significantly better ANS acuity than males at Session 5, and knower level increased significantly with age — related
• The subset-to-cardinal-principle knower-level transition coincides with the largest longitudinal gains in ANS acuity, exceeding other transition types — related
• ANS acuity (w) did not significantly improve within children over the six-month period in the session-level analysis, though a hierarchical linear model detected a linear increase in percent correct — related
• ANS acuity improves throughout development, from w = 0.525 at age 3 to w = 0.179 at age 6 and w = 0.108 in adulthood — related
• Both receptive and expressive vocabulary correlate with number-word knowledge independent of age, replicating Experiment 1. — related
• Vocabulary adds significantly to predicting knower-level after age, but age does not add after vocabulary, suggesting age does not mediate the vocabulary–number-knowledge link. — related
• Early ANS acuity (accuracy and RT) uniquely predicts preschoolers' math ability six months later, controlling for initial math ability, age, and expressive vocabulary — related
• ANS acuity is a unique concurrent predictor of preschool math ability beyond expressive vocabulary, non-numerical attention RT, and memory span — related