Access to a generative-AI assistant raises task performance for both lower- and higher-education adults, with significantly larger gains for lower-education participants¶

Claim · All claims
Evidence · 1 study · causal r3 · q3
Currency · newest study 2026 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? AI access increases the overall task score by 1.242 SD for low-education participants and 0.834 SD for high-education participants, both significant at the 1% level. → Guillermo Cruces 2026 q3 i? The treatment effect is 0.408 SD higher for the low-education group, significant at the 1% level. → Guillermo Cruces 2026

Evidence¶

Guillermo Cruces 2026¶

Guillermo Cruces, Diego Fernández Meijide, Sebastian Galiani, Ramiro H. Gálvez, María Lombardi. (2026). Does generative AI narrow education-based productivity gaps? Evidence from a randomized experiment. https://www.socialscienceregistry.org/trials/16607 doi:10.2139/ssrn.6246347

q3 · i? · causal · r3

Intent-to-treat estimates from the preregistered randomized experiment (1,174 completers) regressing the preregistered overall task score on treatment, education, and their interaction. The article reports the score "increases by 1.242 SD for those in the low-education group" and 0.834 SD for high-education participants.

"The overall score increases by 1.242 SD for those in the low-education group, whereas the impact of the assistant for high-education subjects is 0.834 SD (both estimates are statistically significant at the 1% level)."

Discussion¶

Related Claims¶

• AI assistance closes about three-quarters of the baseline education-based task-performance gap, though a 0.139 SD gap remains among treated participants — related
• AI-induced gains are not purely delegation: treated participants do not perform worse once AI is removed, and lower-education participants retain part of their gain, though a 0.200 SD gap re-emerges — related
• AI access raises unaided essay quality in both sessions, while AI-generated text detectable in Session One essays disappears by Session Two — related
• In a randomised experiment, AI access raised students' enjoyment of learning (p = 0.063) with no statistically detectable effect on self-assessed knowledge or felt effectiveness — related
• AI assistance raises the probability of correctly identifying the task's root cause for both education groups, with near-equalization among treated participants — related
• AI access raises immediate unaided test scores by 7.2 percentage points (0.28 SD) after a timed learning phase — related
• Both instructional groups improved significantly from pre-test to post-test, with larger gains in the generative AI-supported group — related
• One week later, the AI-access group's lead on unaided assessments shrinks to 3.9 pp (0.21 SD), short of statistical significance (p = 0.068) — related
• AI Interaction Competence, not GPA or prior knowledge, is the decisive moderator of LLM-assisted learning gains — related
• LLM-assisted self-study yields higher post-intervention exam performance than traditional resources among early-career knowledge workers — related
• Students show large immediate pre-to-post knowledge gains within a single LLM-supported learning session — related
• Over four months and four sessions, LLM-group participants performed worse than Brain-only participants at neural, linguistic, and scoring levels — reports the opposite
• AI assistance reduces task completion time in both education groups, the only outcome without an equalizing pattern — related