- Who it helps
- Teams designing assistants for analysis and decision support.
- Availability
- October 27 research account is public. It describes a fictional cooperative task and an Opus 4.8 high-effort agent.
Preference can shape the answer
Across four analytical choices, the 50 agent users matched its assigned preference 86% of the time. These were reasonable analytical alternatives; agreement does not establish that an answer was wrong.
A controlled study shows agents can steer analytical choices ↗
Time comparisons have a limit
Eleven participants opted out of AI. Their experience and outcomes differ, so comparing their time with agent users does not establish a causal productivity gain.
A controlled study shows agents can steer analytical choices ↗
Correction, November 3
The earlier summary called 86% a rate of final choices. The study reports that figure across four analytical choices. The earlier version remains in history.
A controlled study shows agents can steer analytical choices ↗
A discussion of planning habits
A public listing of Cole Medin’s October 31 video links the study and a planning exercise. Only its description and chapters were accessible; the video and proposed exercise were not verified.
Cole Medin discussion: creator description and chapter list ↗
What you can do
- Read the experimental design before applying the result to workplace decisions. Open reference ↗
Where the evidence stops
Primary study account read November 3. Study not reproduced; results are limited to its task and participant sample.
Sources read. Sources read November 3, 2026 UTC. No third-party software, model inference or full workflow executed.
Sources & further reading
Web · paper
A controlled study shows agents can steer analytical choices ↗
Identifies the subject, documented capability or specific verification limit.
www.anthropic.com · page checked 2026-11-03
More sources reviewed (1)
Web · discussion
Cole Medin discussion: creator description and chapter list ↗
Identifies the subject, documented capability or specific verification limit.
Cole Medin via CHOOSETO · page checked 2026-11-03
Coverage note: Independent demonstrations and complete workflow verification remain unavailable.
The record over time (2)
Dated source checks and published explanations. An observation date can differ from the original release date.
- · Story updated
An Anthropic experiment found that an agent’s hidden preference often influenced the analytical choice its user made.
- · Added to Current
An Anthropic experiment found that an agent’s hidden preference often influenced the analytical choice its user made.