generated at
sunk cost
サンクコスト、埋没費用
Disposition effect
Endowment effect
Foot-in-the-door technique
Gambler's fallacy
Prospect theory
Psychology of previous investment
Thinking, Fast and Slow

googlesunk cost
image sunk cost
define sunk cost
wikipedia sunk cost
weblio sunk cost
kotobank sunk cost
jisho sunk cost