Engage-to-Unlock redistributed effort across tasks: participants spent more time writing and less time evaluating, without increasing overall task duration¶

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

Subclaims¶

q3 i? Compared with Standard Chatbot, Engage-to-Unlock participants spent about 4.77 minutes longer writing and 4.80 minutes less evaluating, a significant cross-task difference-in-differences of −9.57 minutes, while total task duration did not differ significantly across conditions. → Xiaotian Su 2026

Evidence¶

Xiaotian Su 2026¶

Xiaotian Su, Laura Rimell, Jiazheng Li, Amal Rannen-Triki, Ulrich Paquet, Lisa Anne Hendricks, Rida Qadri, Daphne Ippolito and Piotr Mirowski. (2026). Who Thinks First? Designing Productive Friction with Engage-to-Unlock GenAI. https://arxiv.org/abs/2610.01518 doi:10.48550/arxiv.2610.01518

q3 · i? · causal · r2

In the controlled four-condition Prolific experiment (N=398), planned interaction contrasts from a repeated-measures mixed-effects model compared the change in duration from writing to evaluation. The article reports the Condition× Task interaction was significant, F(3, 394)= 7.85, p < .001, and total duration did not differ significantly across conditions (F(3, 216.86)= 1.02, p=. 383).

"Adaptive participants spent 4.77 min longer on Task 1 but 4.80 min less on Task 2, yielding a significant cross-task difference-in-differences of−9.57min ( 𝑝Holm < .001)."

Discussion¶

Learner Variables¶

• Time and Continuity — outcome: instruction changes it

Related Claims¶

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