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endowment effect

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    Incentive Design Entry #0387

    The reason equity behaves unlike a bonus

    A bonus arrives and is spent. Equity sits and waits, and while it waits the holder becomes someone with something to lose.

    Adept
    The hidden part #0387

    A bonus is a carrot. Equity is an endowment that creates a loss to defend. The second changes the holder more deeply, and not always in the direction intended.

    Open file
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    Cognitive Bias Entry #0105

    Why a free trial changes what you think a product is worth

    A trial does not demonstrate value so much as transfer ownership. Cancelling afterwards is experienced as giving something up, not as declining to buy.

    Master
    The hidden part #0105

    A trial moves the decision from acquiring to relinquishing. The price stays the same while the question quietly changes.

    Open file
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    Scarcity & Queues Entry #0464

    The reason a return window changes the decision to keep

    A longer window looks like more protection for the buyer. It is also more time in which the item stops being a purchase and becomes a possession.

    Adept
    The hidden part #0464

    A return window is not only time to decide. It is time in which the item stops being a candidate and becomes yours.

    Open file
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    Progress Systems Entry #0636

    Why advancement you can lose is guarded harder than advancement you keep

    Status that decays if you stop pulls harder than status you keep permanently. The threat of losing it turns maintenance into constant engagement.

    Novice
    The hidden part #0636

    Status you keep is banked and forgotten. Status that decays is defended — because losing what is yours hurts twice as much as gaining it pleased.

    Open file
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    Reward Loops Entry #0615

    Why streak-freeze tokens make you play more, not less

    A token that protects your streak on a day off seems to reduce pressure. It does the opposite: now the streak is an asset you own and dread losing.

    Master
    The hidden part #0615

    Insurance on a streak does not lower the stakes. It confirms you own something — and a loss you own hurts twice as much as the gain did.

    Open file
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    Priming & Exposure Entry #0750

    Why whatever you touched first decides what you think you prefer

    The first object handled in a comparison benefits from a tactile-primacy effect that inflates its perceived quality, biasing the evaluation before alternatives are tried.

    Adept
    The hidden part #0750

    The first object touched is the one the hand already owns. Every later object is judged against a benchmark the hand already favours.

    Open file
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    Achievement Architecture Entry #0722

    The reason onboarding hands out a trophy in the first minute

    An instant onboarding trophy converts a tentative first visit into a committed relationship by giving the user something to lose before they have decided whether to stay.

    Adept
    The hidden part #0722

    A trophy in the first minute is not a reward for arriving — it is a deposit the user will not want to forfeit by leaving.

    Open file
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    Achievement Architecture Entry #0712

    The reason a tenure email lands on the anniversary, not the deadline

    Timing a tenure notification to an anniversary rather than a deadline frames membership as a celebration of identity rather than a transaction approaching expiry.

    Adept
    The hidden part #0712

    An anniversary email sells nothing — except the idea that you are the kind of person who stays. That idea does the retention work alone.

    Open file
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    Achievement Architecture Entry #0706

    The reason a first badge outranks a best badge

    A first badge outweighs a top-tier one because the initial reward anchors identity at the moment of highest uncertainty, when the user is still deciding to stay.

    Adept
    The hidden part #0706

    The first badge is not a reward for arriving — it is a lock on the door behind you. Once accepted, leaving costs something it didn’t before.

    Open file
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    Spatial Design Entry #1084

    Why narrow aisles slow you down and widen the basket

    A tight aisle forces a slower pace and closer product contact, so the shopper sees more, touches more and buys more per metre walked.

    Adept
    The hidden part #1084

    The wide aisle moves you past the product — the narrow one moves the product into your hand.

    Open file