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¶

Claim · All claims
Evidence · 1 study (2 entries) · associational r2 · q3
Currency · newest study 2016 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? A repeated measures ANCOVA found no significant within-subject improvement in w across sessions (F(1,32) = 0.31, p = .58), and none in percent correct (F(1,38) = 0.33, p = .57). → Shusterman Anna 2016 q3 i? An HLM found a significant linear increase in percent correct across the six sessions (β = 0.81, p = .01) but no corresponding linear change in w. → Shusterman Anna 2016 (2)

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

Null result from the longitudinal ANCOVA with baseline age and sex as covariates in the 42-child sample. A null test does not establish that w was unchanged; equivalence was not tested.

"showed that w did not significantly improve within subjects over the 6-month period, F(1, 32) = 0.31, p = .58 (5 children did not contribute a w score at either S2 or S5 and were excluded from this analysis). Similarly, no effect was detected when evaluating percent correct as a measure of ANS performance, F(1, 38) = 0.33, p = .57."

Shusterman Anna 2016 (2)¶

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

Authors' notebook note in the Results: the HLM over all six sessions detected linear growth only in percent correct, not in w, motivating the focus on discrete transitions rather than linear change.

"such change was confirmed using a hierarchical linear model (HLM), which indicated a significant linear increase in percent correct responses across the six sessions (β = 0.81, p = .01). HLM analyses did not reveal a corresponding linear change in w."

Discussion¶

Related Claims¶

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