Longitudinal gains in children's retrieval fluency are predicted by increased hippocampal-neocortical functional connectivity, not by hippocampal activation levels¶

Claim · All claims
Evidence · 1 study (2 entries) · associational r2 · q3
Currency · newest study 2014 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? Changes in hippocampal functional connectivity with left DLPFC, right DLPFC, and left intraparietal sulcus reliably predicted individual improvements in retrieval fluency. → Qin Shaozheng 2014 q3 i? Changes in hippocampal activation itself were not predictive of individual improvements in retrieval fluency, accuracy, or reaction times. → Qin Shaozheng 2014 (2)

Evidence¶

Qin Shaozheng 2014¶

Qin Shaozheng, Cho Soohyun, Chen Tianwen, Rosenberg-Lee Miriam, Geary David C., Menon Vinod. (2014). Hippocampal-neocortical functional reorganization underlies children's cognitive development. Nature Neuroscience. https://doi.org/10.1038/nn.3788

q3 · i? · associational · r2

Machine-learning prediction analysis with balanced 4-fold cross-validation on longitudinal connectivity change and retrieval-fluency change in 28 children; printed prediction correlations include "r(predicted, observed) = 0.53" for left DLPFC, "r(predicted, observed) = 0.71" for right DLPFC, and "r(predicted, observed) = 0.51" for left IPS. No standardized effect size is printed.

"individual improvements in children's retrieval fluency from Time-1 to Time-2 could be reliably predicted by longitudinal changes in functional coupling of the hippocampus with the left DLPFC (r(predicted, observed) = 0.53) and right DLPFC (r(predicted, observed) = 0.71) and left intra-parietal sulcus (r(predicted, observed) = 0.51)"

Qin Shaozheng 2014 (2)¶

Qin Shaozheng, Cho Soohyun, Chen Tianwen, Rosenberg-Lee Miriam, Geary David C., Menon Vinod. (2014). Hippocampal-neocortical functional reorganization underlies children's cognitive development. Nature Neuroscience. https://doi.org/10.1038/nn.3788

q3 · i? · associational · r2

Longitudinal analysis in the same 28 children found hippocampal activation change did not predict gains in retrieval fluency, accuracy, or RTs; no effect size or test statistic is printed for this null finding.

"Despite significant longitudinal increases in hippocampal engagement, changes in hippocampal activation were not predictive of individual improvements in children's retrieval fluency, accuracy, or RTs."

Discussion¶

Related Claims¶

• Hippocampal engagement during arithmetic problem solving increases longitudinally in children while prefrontal-parietal engagement decreases — related
• Children shift from counting to memory-based retrieval strategies in single-digit addition over a 1.2-year interval in middle childhood — related
• Inter-problem multivoxel pattern stability in the hippocampus increases from childhood through adolescence into adulthood, reaching adult-like levels by adolescence — related
• Memory-based strategy use continues to increase from childhood through adolescence into adulthood — related