Rational Actor
The rational actor model is the standard economic assumption that individuals consistently act to maximize their own self-interest, given their preferences and the information available to them. When faced with a choice, the rational actor selects the option with the highest expected utility.
The model is not a description of how people actually behave — it is an analytical simplification. It works well enough for aggregate predictions at large scale, but breaks down when explaining individual behavior in complex, emotionally charged, or low-information situations.
Why It Matters for Policy
The rational actor assumption underlies much of welfare policy design — if recipients maximize income, then any structure that makes employment economically worse than inactivity will cause people to remain unemployed. This is the core logic behind the welfare-trap and poverty-trap.
The critique of the rational actor model from behavioral economics (Kahneman, Thaler) is that people systematically deviate from this ideal in predictable ways: loss aversion, present bias, status quo preference. But for structural policy problems like welfare traps, the rational actor assumption is useful — the trap works precisely because employment really is less rational than inaction at the margin.
Connections
- poverty-trap — poverty traps function because poor individuals act rationally in response to perverse incentive structures
- welfare-trap — the welfare trap is the rational actor model applied to benefit phase-outs: if employment reduces net income, the rational response is not to work