Researchers secretly experimented on Reddit users with AI-generated comments

A group of researchers covertly ran a months-long "unauthorized" experiment in one of Reddit's most popular communities using AI-generated comments to test the persuasiveness of large language models. The experiment, which was revealed over the weekend by moderators of r/changemyview, is described by Reddit mods as "psychological manipulation" of unsuspecting users. "The CMV Mod Team needs to inform the CMV community about an unauthorized experiment conducted by researchers from the University of Zurich on CMV users," the subreddit's moderators wrote in a lengthy post notifying Redditors about the research. "This experiment deployed AI-generated comments to study how AI could be used to change views." The researchers used LLMs to create comments in response to posts on r/changemyview, a subreddit where Reddit users post (often controversial or provocative) opinions and request debate from other users.