Does AI Assistance Enhance or Erode Expertise? Evidence from a Three-Month Field Experiment in Patent Drafting (w35720)

English summary

Pre-registered RCT, 133 patent lawyers at 11 firms: AI raises delivered quality +0.34 SD (10 d) / +0.38 SD (90 d); unaided redline after 3 months +0.32 SD, all among seniors (+0.45 SD), juniors bifurcate.