behavioral-economics

What Replicating Charness-Jackson Taught Me About LLM "Behavior"

We swapped 96 humans for GPT-4o-mini in a 2009 risk-and-responsibility experiment from behavioral economics. The baselines matched almost exactly, but under the responsibility treatment the model swung 32 percentage points in the wrong direction from the human pattern. The more robustness checks I ran, the less I trusted the headline finding.