House Money Effect, explained.
The house money effect describes greater willingness to take risk following prior gains. Recent winnings may be mentally separated from existing wealth even though both now belong to the decision maker.
Why it happens
An origin story can change the reference point for a possible loss. Losing newly won money may feel like returning a bonus, while an identical loss from savings may feel more serious. Current final-wealth outcomes need not change with that story.
The house money effect describes increased willingness to take risk following a prior gain. Treating recent winnings as separate from other wealth can change a decision without changing its payoff distribution.
Read the result
Make a choice in each frame before the shared draw is revealed. Both begin at 100 and offer the same sure or risky final wealth. The report shows your actual choices, not an invented increase in risk appetite.
A worked example
The same current wealth with two histories
One frame says the current 100 tokens came from savings; the other says 80 became 100 after a gain.
Each offers sure final wealth 110 or a 50/50 chance of 90 or 130, with an expected value of 110.
Compare the two choices. A difference is a prompt to consider framing, not proof of a stable bias or evidence that either risk preference is wrong.
OPTIONAL DEEPER DETAILGo deeper: inside the model
Inside this model
Both frames start the current decision at 100: saved tokens versus 80 plus a 20-token gain. The choice is sure 110 or a fair draw between 90 and 130; both have expected value 110. Record both choices before revealing a shared seeded draw for the risky option.
Where this idea is useful
A practical use
The same possible loss may feel different when it is described as giving back a windfall rather than spending savings.
A common misconception
“Winnings are not really my money yet.”
Once received, the gain is part of current wealth. Its history can affect feelings, but a later loss still reduces resources available for other uses.
What this explanation leaves out
- This unblinded, fixed-order comparison is not a controlled psychological study. Neither choice is universally correct; preferences for risk can differ. No actual money is used.
Is choosing the gamble irrational?
Not necessarily. The outcomes have equal expected values but different risk. Preferences over risk matter; the activity compares a frame change rather than assigning a universal correct choice.
Do you apply different spending or risk rules to a windfall than to an equal amount of saved income?
Associated thinkers
Associations marked provisional are awaiting source review.
Further reading
Explore the original research or the teaching reference behind this experiment.