{"id":34219,"date":"2025-08-25T10:53:34","date_gmt":"2025-08-25T01:53:34","guid":{"rendered":"https:\/\/uxdaystokyo.com\/articles\/?post_type=glossary&#038;p=34219"},"modified":"2025-08-25T11:20:08","modified_gmt":"2025-08-25T02:20:08","slug":"probability-weighting-function","status":"publish","type":"glossary","link":"https:\/\/uxdaystokyo.com\/articles\/glossary\/probability-weighting-function\/","title":{"rendered":"\u78ba\u7387\u52a0\u91cd\u95a2\u6570"},"content":{"rendered":"<p>\u884c\u52d5\u7d4c\u6e08\u5b66\u3001\u3068\u308a\u308f\u3051 <a href=\"https:\/\/uxdaystokyo.com\/articles\/glossary\/prospect-theory\/\">\u30d7\u30ed\u30b9\u30da\u30af\u30c8\u7406\u8ad6 <\/a>\u306b\u304a\u3044\u3066\u3001\u4eba\u9593\u304c\u300c\u5ba2\u89b3\u7684\u306a\u78ba\u7387\u300d\u3068\u300c\u4e3b\u89b3\u7684\u306b\u611f\u3058\u308b\u78ba\u7387\u300d\u3092\u4e00\u81f4\u3055\u305b\u305a\u306b\u8a55\u4fa1\u3059\u308b\u50be\u5411\u3092\u6570\u7406\u7684\u306b\u8868\u73fe\u3057\u305f\u3082\u306e\u3067\u3042\u308b\u3002<\/p>\n<p data-start=\"131\" data-end=\"138\">\u305f\u3068\u3048\u3070\uff1a<\/p>\n<ul>\n<li data-start=\"142\" data-end=\"208\">\u300c1000\u56de\u306b1\u56de\u5f53\u305f\u308b\uff080.1%\uff09\u300d\u3068\u8a00\u308f\u308c\u3066\u3082\u3001\u307b\u3068\u3093\u3069\u306e\u4eba\u306f\u300c\u307b\u307c\u30bc\u30ed\u300d\u3067\u306f\u306a\u304f<em><strong>\u300c\u3082\u3057\u304b\u3057\u305f\u3089\u5f53\u305f\u308b\u304b\u3082\uff01\u300d<\/strong><\/em>\u3068\u5f37\u304f\u611f\u3058\u308b\u3002<\/li>\n<li data-start=\"211\" data-end=\"259\">\u300c99%\u6210\u529f\u3059\u308b\u300d\u3068\u8a00\u308f\u308c\u3066\u3082\u3001<em><strong>\u300c1%\u306e\u5931\u6557\u304c\u6016\u3044\u300d\u3068\u611f\u3058<\/strong><\/em>\u3001\u78ba\u7387\u4ee5\u4e0a\u306b\u30ea\u30b9\u30af\u3092\u91cd\u304f\u898b\u7a4d\u3082\u308b\u3002<\/li>\n<\/ul>\n<p data-start=\"332\" data-end=\"338\">\u3064\u307e\u308a\u3001<\/p>\n<ul>\n<li data-start=\"341\" data-end=\"377\"><strong data-start=\"341\" data-end=\"351\">\u5ba2\u89b3\u7684\u306a\u78ba\u7387<\/strong> = \u6570\u5b57\u3068\u3057\u3066\u306e\u672c\u5f53\u306e\u78ba\u7387\uff08\u4f8b\uff1a1%\u300199%\uff09<\/li>\n<li data-start=\"380\" data-end=\"424\"><strong data-start=\"380\" data-end=\"390\">\u4e3b\u89b3\u7684\u306a\u78ba\u7387<\/strong> = \u4eba\u304c\u5b9f\u969b\u306b\u611f\u3058\u308b\u78ba\u7387\uff08\u4f8b\uff1a1%\u3092\u300c<strong>10%\u304f\u3089\u3044\u306b\u611f\u3058\u308b<\/strong>\u300d\uff09<\/li>\n<\/ul>\n<p>\u3059\u306a\u308f\u3061\u3001\u4eba\u9593\u306f <strong data-start=\"149\" data-end=\"170\">\u4f4e\u3044\u78ba\u7387\u3092\u5b9f\u969b\u3088\u308a\u3082\u5927\u304d\u304f\u898b\u7a4d\u3082\u308a<\/strong>\u3001\u4e00\u65b9\u3067 <strong data-start=\"175\" data-end=\"196\">\u9ad8\u3044\u78ba\u7387\u3092\u5b9f\u969b\u3088\u308a\u3082\u5c0f\u3055\u304f\u898b\u7a4d\u3082\u308b<\/strong>\u3068\u3044\u3046\u5fc3\u7406\u7684\u7279\u6027\u3092\u6301\u3064\u3002<br \/>\n\u5b9d\u304f\u3058\u306e\u3088\u3046\u306a\u300c\u307b\u3068\u3093\u3069\u5f53\u305f\u3089\u306a\u3044\u78ba\u7387\u300d\u3067\u3082\u5f37\u304f\u60f9\u304d\u3064\u3051\u3089\u308c\u3001\u9006\u306b\u300c\u307b\u3068\u3093\u3069\u78ba\u5b9f\u306b\u5f97\u3089\u308c\u308b\u78ba\u7387\u300d\u3067\u3082\u904e\u5c0f\u8a55\u4fa1\u3057\u3066\u3057\u307e\u3046\u306e\u3067\u3042\u308b\u3002<\/p>\n<p data-start=\"426\" data-end=\"458\">\u3053\u306e\u300c\u78ba\u7387\u3092\u305d\u306e\u307e\u307e\u3067\u306f\u306a\u304f\u3001\u81a8\u3089\u307e\u305b\u305f\u308a\u7e2e\u3081\u305f\u308a\u3057\u3066\u611f\u3058\u3066\u3057\u307e\u3046\u5fc3\u306e\u30af\u30bb\u300d\u3092\u3001\u30b0\u30e9\u30d5\u3084\u6570\u5f0f\u3067\u8868\u3057\u305f\u306e\u304c\u78ba\u7387\u52a0\u91cd\u95a2\u6570\u3067\u3042\u308b\u3002<\/p>\n<h2 data-start=\"426\" data-end=\"458\">\u95a2\u4fc2\u7528\u8a9e\u306e\u63d0\u5531\u8005<\/h2>\n<div style=\"width: 246px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/encrypted-tbn1.gstatic.com\/images?q=tbn:ANd9GcRLJq9ZqX-fs2nZgPE8MhD80Fbzfgg4mnpRg23fLV5P5TS5f-RBr3Y5CbZPh6CN3A9wRX3gT-83AVOL3YxpF4--NA\" alt=\"\u30c9\u30e9\u30b8\u30a7\u30fb\u30d7\u30ec\u30ec\u30c3\u30c1\" width=\"236\" height=\"354\" \/><p class=\"wp-caption-text\"><a href=\"https:\/\/nelmit.wordpress.com\/drazen-prelec\/\">\u30c9\u30e9\u30b8\u30a7\u30fb\u30d7\u30ec\u30ec\u30c3\u30c1\u00a0\u00a0\u00a0\u00a0<\/a><\/p><\/div>\n<p data-start=\"218\" data-end=\"240\">\u4ee3\u8868\u7684\u306a\u6570\u5f0f\u30e2\u30c7\u30eb\u306b\u306f\u3001\u30ab\u30fc\u30cd\u30de\u30f3\uff08Daniel Kahneman\uff09<strong data-start=\"293\" data-end=\"341\">\u3068\u30c8\u30f4\u30a7\u30eb\u30b9\u30ad\u30fc\uff08<\/strong>Amos Tversky<strong data-start=\"293\" data-end=\"341\">\uff09<\/strong> \u306b\u3088\u308b\u30d7\u30ed\u30b9\u30da\u30af\u30c8\u7406\u8ad6\u306e\u95a2\u6570\u3001\u304a\u3088\u3073 <strong data-start=\"361\" data-end=\"384\">\u30d7\u30ec\u30ec\u30c3\u30af\uff08<\/strong>Drazen Prelec, 1998<strong data-start=\"361\" data-end=\"384\">\uff09<\/strong> \u306e\u9006S\u5b57\u578b\u78ba\u7387\u52a0\u91cd\u95a2\u6570\u304c\u3042\u308b\u3002<\/p>\n<h3 data-start=\"218\" data-end=\"240\">\u6570\u5f0f\uff08\u30d7\u30ec\u30ec\u30c3\u30af\u306e\u78ba\u7387\u52a0\u91cd\u95a2\u6570\uff09<\/h3>\n<p data-start=\"241\" data-end=\"262\">Prelec\u306e\u95a2\u6570\uff1a<\/p>\n<blockquote><p><span class=\"base\"><span class=\"mord mathnormal\">w<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">p<\/span><span class=\"mclose\">)<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mop\">exp<\/span><span class=\"mord\"><span class=\"delimsizing size2\">(<\/span><\/span><span class=\"mbin\">\u2212<\/span><\/span><span class=\"base\"><span class=\"mopen\">(<\/span><span class=\"mord\">\u2212<\/span><span class=\"mop\">ln<\/span><span class=\"mord mathnormal\">p<\/span><span class=\"mclose\">)<span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">\u03b1<\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mord\"><span class=\"delimsizing size2\">)<\/span><\/span><span class=\"mpunct\">,<\/span><span class=\"mord\">0<\/span><span class=\"mrel\">&lt;<\/span><\/span><span class=\"base\"><span class=\"mord mathnormal\">\u03b1<\/span><span class=\"mrel\">&lt;<\/span><\/span><span class=\"base\"><span class=\"mord\">1<\/span><\/span><\/p><\/blockquote>\n<ul>\n<li data-start=\"343\" data-end=\"373\"><span class=\"katex\"><span class=\"katex-mathml\">pp<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">p<\/span><\/span><\/span><\/span> = \u5ba2\u89b3\u7684\u78ba\u7387\uff08\u4f8b\uff1a0.1 = 10%\uff09<\/li>\n<li data-start=\"376\" data-end=\"400\"><span class=\"katex\"><span class=\"katex-mathml\">w(p)w(p)<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">w<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">p<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span> = \u4e3b\u89b3\u7684\u306b\u611f\u3058\u308b\u78ba\u7387<\/li>\n<li data-start=\"403\" data-end=\"441\"><span class=\"katex\"><span class=\"katex-mathml\">\u03b1\\alpha<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">\u03b1<\/span><\/span><\/span><\/span> = \u30d1\u30e9\u30e1\u30fc\u30bf\uff08\u4eba\u306e\u300c\u6b6a\u307f\u306e\u5f37\u3055\u300d\u3092\u8abf\u6574\u3059\u308b\uff09<\/li>\n<\/ul>\n<h4 data-start=\"218\" data-end=\"240\">\u9006S\u5b57\u578b\u78ba\u7387\u52a0\u91cd\u95a2\u6570\u306e\u30b0\u30e9\u30d5<\/h4>\n<p data-start=\"218\" data-end=\"240\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-34236\" src=\"https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/08\/probability-weighting-function1-1024x667.png\" alt=\"\" width=\"683\" height=\"445\" srcset=\"https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/08\/probability-weighting-function1-1024x667.png 1024w, https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/08\/probability-weighting-function1-300x196.png 300w, https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/08\/probability-weighting-function1-768x501.png 768w, https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/08\/probability-weighting-function1-1536x1001.png 1536w, https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/08\/probability-weighting-function1.png 1786w\" sizes=\"auto, (max-width: 683px) 100vw, 683px\" \/><\/p>\n<h2 data-start=\"409\" data-end=\"428\">\u30c7\u30b6\u30a4\u30f3\u4e0a\u306e\u5229\u7528\u65b9\u6cd5\u3068\u4e8b\u4f8b<\/h2>\n<p data-start=\"430\" data-end=\"482\">\u78ba\u7387\u52a0\u91cd\u95a2\u6570\u306e\u7279\u6027\u306f\u3001UX\u3084\u30d7\u30ed\u30c0\u30af\u30c8\u30c7\u30b6\u30a4\u30f3\u306b\u5fdc\u7528\u53ef\u80fd\u3067\u3042\u308b\u3002\u4f8b\u3048\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5834\u9762\u3067\u6d3b\u7528\u3067\u304d\u308b\u3002<\/p>\n<ul data-start=\"484\" data-end=\"773\">\n<li data-start=\"484\" data-end=\"582\">\n<p data-start=\"486\" data-end=\"582\"><strong data-start=\"486\" data-end=\"500\">\u30b2\u30fc\u30df\u30d5\u30a3\u30b1\u30fc\u30b7\u30e7\u30f3<\/strong>\uff1a<br data-start=\"501\" data-end=\"504\" \/>\u30ac\u30c1\u30e3\u3084\u30eb\u30fc\u30ec\u30c3\u30c8\u306a\u3069\u3067\u300c\u4f4e\u78ba\u7387\u3067\u3082\u5f53\u305f\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u300d\u3068\u3044\u3046\u4f53\u9a13\u3092\u6f14\u51fa\u3059\u308b\u3053\u3068\u3067\u3001\u7d99\u7d9a\u5229\u7528\u3092\u4fc3\u3059\u3002\u30e6\u30fc\u30b6\u30fc\u306f1%\u306e\u5f53\u305f\u308a\u309210%\u7a0b\u5ea6\u306b\u611f\u3058\u3084\u3059\u3044\u3002<\/p>\n<\/li>\n<li data-start=\"584\" data-end=\"665\">\n<p data-start=\"586\" data-end=\"665\"><strong data-start=\"586\" data-end=\"599\">\u8cfc\u8cb7\u30a4\u30f3\u30bb\u30f3\u30c6\u30a3\u30d6<\/strong>\uff1a<br data-start=\"600\" data-end=\"603\" \/>\u300c\u8cfc\u5165\u8005\u306e\u4e2d\u304b\u3089\u62bd\u9078\u30671\u540d\u306b\u5168\u984d\u30ad\u30e3\u30c3\u30b7\u30e5\u30d0\u30c3\u30af\u300d\u306a\u3069\u3001\u4f4e\u78ba\u7387\u306e\u5831\u916c\u3092\u63d0\u793a\u3059\u308b\u3068\u3001\u78ba\u7387\u4ee5\u4e0a\u306b\u5f37\u3044\u52d5\u6a5f\u3065\u3051\u304c\u751f\u307e\u308c\u308b\u3002<\/p>\n<\/li>\n<li data-start=\"667\" data-end=\"773\">\n<p data-start=\"669\" data-end=\"773\"><strong data-start=\"669\" data-end=\"682\">\u30ea\u30b9\u30af\u56de\u907f\u30c7\u30b6\u30a4\u30f3<\/strong>\uff1a<br data-start=\"683\" data-end=\"686\" \/>\u300c99%\u5b89\u5168\u300d\u3068\u8868\u793a\u3059\u308b\u3088\u308a\u300c1%\u306e\u30ea\u30b9\u30af\u304c\u3042\u308b\u300d\u3068\u63d0\u793a\u3059\u308b\u65b9\u304c\u904e\u654f\u306b\u53cd\u5fdc\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308b\u3002\u3053\u306e\u7279\u6027\u3092\u7406\u89e3\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u4e0d\u5b89\u3092\u9069\u5207\u306b\u6291\u3048\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u8a2d\u8a08\u304c\u6c42\u3081\u3089\u308c\u308b\u3002<\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"780\" data-end=\"799\">\u5177\u4f53\u7684\u4e8b\u4f8b<\/h2>\n<ol data-start=\"801\" data-end=\"1073\">\n<li data-start=\"801\" data-end=\"891\">\n<p data-start=\"804\" data-end=\"891\"><strong data-start=\"804\" data-end=\"819\">\u5b9d\u304f\u3058\u30a2\u30d7\u30ea\u306e\u30c7\u30b6\u30a4\u30f3<\/strong><br data-start=\"819\" data-end=\"822\" \/>\u2192 \u300c1000\u4e07\u4eba\u306b1\u4eba\u306e\u78ba\u7387\u300d\u3088\u308a\u300c\u3042\u306a\u305f\u306b\u3082\u5f53\u305f\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u300d\u3068\u5f37\u8abf\u3059\u308b\u65b9\u304c\u3001\u78ba\u7387\u52a0\u91cd\u306e\u7279\u6027\u3092\u8e0f\u307e\u3048\u305f\u52b9\u679c\u7684\u306a\u8868\u73fe\u3067\u3042\u308b\u3002<\/p>\n<\/li>\n<li data-start=\"893\" data-end=\"980\">\n<p data-start=\"896\" data-end=\"980\"><strong data-start=\"896\" data-end=\"913\">\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u89e3\u7d04\u6291\u6b62<\/strong><br data-start=\"913\" data-end=\"916\" \/>\u2192 \u300c\u89e3\u7d04\u3059\u308b\u3068\u5272\u5f15\u30af\u30fc\u30dd\u30f3\u304c\u5f53\u305f\u308b\u30c1\u30e3\u30f3\u30b9\u3092\u5931\u3044\u307e\u3059\u300d\u3068\u63d0\u793a\u3059\u308b\u3068\u3001\u4f4e\u78ba\u7387\u3067\u3082\u30e6\u30fc\u30b6\u30fc\u306f\u5927\u304d\u304f\u611f\u3058\u3001\u89e3\u7d04\u6291\u6b62\u306b\u50cd\u304f\u3002<\/p>\n<\/li>\n<li data-start=\"982\" data-end=\"1073\">\n<p data-start=\"985\" data-end=\"1073\"><strong data-start=\"985\" data-end=\"997\">\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8b66\u544a<\/strong><br data-start=\"997\" data-end=\"1000\" \/>\u2192 \u300c1%\u306e\u78ba\u7387\u3067\u30c7\u30fc\u30bf\u304c\u5931\u308f\u308c\u308b\u300d\u3088\u308a\u3082\u300c\u3081\u3063\u305f\u306b\u306a\u3044\u304c\u5927\u5207\u306a\u30c7\u30fc\u30bf\u304c\u5931\u308f\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u300d\u3068\u8868\u73fe\u3059\u308b\u3068\u3001\u3088\u308a\u30ea\u30b9\u30af\u3092\u81ea\u899a\u3055\u305b\u3084\u3059\u3044\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u95a2\u9023\u7528\u8a9e<\/h2>\n<ul>\n<li><a href=\"https:\/\/uxdaystokyo.com\/articles\/glossary\/money-illusion\/\">\u8ca8\u5e63\u932f\u899a<\/a><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4eba\u306f\u6570\u5b57\u3067\u8868\u3055\u308c\u308b\u78ba\u7387\u3092\u305d\u306e\u307e\u307e\u6b63\u3057\u304f\u611f\u3058\u308b\u308f\u3051\u3067\u306f\u306a\u304f\u3001\u81ea\u5206\u306e\u611f\u899a\u3067\u3086\u304c\u3081\u3066\u53d7\u3051\u6b62\u3081\u3066\u3057\u307e\u3046\u300d\u3053\u3068\u3092\u6570\u5f0f\u3067\u8868\u3057\u305f\u3082\u306e<\/p>\n","protected":false},"author":5,"featured_media":34230,"template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"English":"probability weighting 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