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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Risk-seeking ： ウィキペディア英語版 Risk-seeking In economics and finance, a risk-seeker or risk-lover is a person who has a preference ''for'' risk. While most investors are considered risk ''averse'', one could view casino-goers as risk-seeking. If offered either $50 or a 50% each chance of either $100 or nothing, a risk-seeking person would prefer the gamble even though the gamble and the sure thing have the same expected value. Risk-seeking behavior can be observed in the negative domain for prospect theory value functions, where the functions are convex for but concave for $x\; >\; 0$. ==The risk-seeking utility function== Choice under uncertainty is often characterized as the maximization of expected utility. Utility is often assumed to be a function of profit or final portfolio wealth, with a positive first derivative. The utility function whose expected value is maximized is convex for a risk-seeker, concave for a risk-averse agent, and linear for a risk-neutral agent. Its convexity in the risk-seeking case has the effect of causing a mean-preserving spread of any probability distribution of wealth outcomes to be preferred over the unspread distribution. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Risk-seeking」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.