Executive task accuracy and processing speed improve dramatically with age across the preschool period, with no cohort effect from repeated testing¶

Claim · All claims
Evidence · 1 study · associational r3 · q3
Currency · newest study 2014 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2019: baselines and conditions change

Subclaims¶

q3 i? There was no significant overall effect of study entry cohort, suggesting little impact of repeated testing. → Clark 2014

Evidence¶

Clark 2014¶

Clark, C. A. C., Nelson, J. M., Garza, J., Sheffield, T. D., Wiebe, S. A., & Espy, K. A. (2014). Gaining control: changing relations between executive control and processing speed and their relevance for mathematics achievement over course of the preschool period. Frontiers in Psychology. https://doi.org/10.3389/fpsyg.2014.00107

q3 · i? · associational · r3

Same MANOVA testing study entry cohort independent of the age effect. No significant cohort effect emerged ("F(36,2869.7) = 1.29, Wilk's λ(36) = 0.95, p = 0.11"), supporting the design's control of practice effects; equivalence was not otherwise tested.

"there was no significant overall effect of study entry cohort, suggesting little impact of repeated testing on children’s exec- utive task performance, F(36,2869.7) = 1.29, Wilk’s λ(36) = 0.95, p = 0.11."

Discussion¶

Related Claims¶

• EC factor loadings on executive tasks strengthen and stabilize across the preschool period — related
• At age 3, executive task performance does not form a coherent latent EC factor independent of processing speed — related
• By age 5.25, executive tasks load significantly and consistently on a distinct EC latent factor — related
• The proportion of perseverators declines steeply across the preschool period, from 38% at age 3;9 to 8% at age 5;3 — related
• Significant mixing and local costs are present at each preschool age, with both decreasing in magnitude from age 3;9 to 5;3 — related