A single 10-second practice trial of motor skill A produces micro-offline generalization, with performance at the onset of skill B exceeding the end of skill A¶

Claim · All claims
Evidence · 1 study · causal r2 · q2
Currency · newest study 2023 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Only the one-trial practice group began skill B at higher performance than it ended skill A (p = 0.001), suggesting rapid within-seconds generalization during wakeful rest. → B. P. Johnson 2023

Evidence¶

B. P. Johnson 2023¶

B. P. Johnson, I. Iturrate, R. Y. Fakhreddine, M. Bönstrup, E. R. Buch, E. M. Robertson and L. G. Cohen. (2023). Generalization of procedural motor sequence learning after a single practice trial. npj Science of Learning 8:45. https://doi.org/10.1038/s41539-023-00194-7

q2 · i? · causal · r2

Experiment 1 (n = 551, MTurk) randomly assigned participants to 1, 2, 5, or 12 trials of skill A before testing skill B; tapping speed measured generalization. Only the one-trial group showed "the one trial practice group was the only group that started skill B at a higher performance level than they ended skill A ( p = 0.001".

"Relating performance at the end of skill A and the onset of skill B ( GenB0 /C0 Af ), we found that the one trial practice group was the only group that started skill B at a higher performance level than they ended skill A ( p = 0.001, Fig. 1d)."

Discussion¶

Related Claims¶

• Early generalization is content-specific: skill B onset performance is higher when skills share a parsing rule than when they share only transition structure — related
• One-trial generalization of parsing rule structure exceeds sensorimotor mapping benefits: onset of skill B is approximately 19% larger in the PARSING RULE than the RANDOM group — related
• Varying the inter-skill rest interval from 0 to 30 seconds does not modify one-trial generalization from skill A to skill B — related
• Random termination of practice periods does not reduce micro-offline gains, ruling out preemptive motor slowing — related
• Performance improvements during early motor skill learning occur predominantly during short rest periods (micro-offline gains), replicated in a large crowdsourced sample and in a laboratory study — related
• Halving practice-period duration from 10 s to 5 s leaves micro-offline gains unchanged, arguing against recovery from motor fatigue — related
• Micro-offline gains are inconsistent with a dominant contribution of latent motor slowing, supporting consolidation as their driver — related
• Early learning of an implicit motor sequence is accounted for by micro-offline gains during brief rest periods rather than by gains during active practice — related