L2C coaching significantly reduces learners' lap times and failure counts from pre- to post-coaching in FPV drone racing¶

Claim · All claims
Evidence · 1 study (2 entries) · causal r2 · q3 · i2–i3
Currency · newest study 2026 · checked against its sources 2026-10-20 (automated, 2 of 2 entries) · not reviewed by a person

Subclaims¶

q3 i2 After about 40 minutes of L2C coaching, learners' lap times dropped by 27.9% on average (dz = -1.08, p = 0.005). → Wei Wang 2026 q3 i3 L2C coaching reduced per-lap failure count by a mean of 3.52 failures (dz = -2.13, p < 0.001). → Wei Wang 2026 (2)

Evidence¶

Wei Wang 2026¶

Wei Wang, Enlin Gu, Antonio Loquercio, Haimin Hu, Rahul Mangharam. (2026). AI Coaching for Accelerating Human Skill Development with Reinforcement Learning. arXiv preprint. https://arxiv.org/abs/2606.25337 doi:10.48550/arxiv.2606.25337

q3 · i2 · causal · r2

Within-subject paired t-test in the N=33 user study, L2C group, comparing pre- and post-coaching unassisted test laps. The article reports "a mean reduction of 27.9%" with Cohen's dz = -1.08 (large) and p = 0.005.

"a paired-samplest-test comparing pre- and post-coaching lap times yielded a mean reduction of 27.9% withp= 0.005and Cohen’sd z =−1.08(large)"

Wei Wang 2026 (2)¶

Wei Wang, Enlin Gu, Antonio Loquercio, Haimin Hu, Rahul Mangharam. (2026). AI Coaching for Accelerating Human Skill Development with Reinforcement Learning. arXiv preprint. https://arxiv.org/abs/2606.25337

q3 · i3 · causal · r2

Paired t-test on per-lap failure count (collisions and timeouts) for the L2C group in the same user study, pre- versus post-coaching. The article reports "a mean reduction of 3.52 failures per lap" with Cohen's dz = -2.13 (very large), p < 0.001.

"a paired t-test on per-lap failure count yielded a mean reduction of 3.52 failures per lap withp<0.001and Cohen’sd z =−2.13(very large)"

Discussion¶

Related Claims¶

• Baseline coaches produced weaker or absent learning gains: RBF improved only failure count, MIA neither outcome — related
• Learners rated the L2C coach higher than both baselines on safety, performance, agency, and satisfaction — related
• L2C outperformed both the Rule-based Fading and Minimally-invasive Assistance baselines on lap time and failure count — related
• The L2C coach adaptively modulates assistance by estimated learner skill and physical context, concentrating intervention around gates — related
• For within-subjects designs, the author recommends reporting Cohen's d_rm or Cohen's d_av rather than Cohen's dz — related