{"id":32241,"date":"2025-05-12T17:31:39","date_gmt":"2025-05-12T08:31:39","guid":{"rendered":"https:\/\/uxdaystokyo.com\/articles\/?post_type=glossary&#038;p=32241"},"modified":"2025-05-12T17:31:39","modified_gmt":"2025-05-12T08:31:39","slug":"pessimism-bias","status":"publish","type":"glossary","link":"https:\/\/uxdaystokyo.com\/articles\/glossary\/pessimism-bias\/","title":{"rendered":"\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9"},"content":{"rendered":"<p>\u3053\u306e\u30d0\u30a4\u30a2\u30b9\u3092\u6301\u3064\u8005\u306f\u3001\u6210\u529f\u306e\u53ef\u80fd\u6027\u3092\u904e\u5c0f\u8a55\u4fa1\u3057\u3001\u5931\u6557\u3084\u60aa\u3044\u7d50\u679c\u304c\u751f\u3058\u308b\u78ba\u7387\u3092\u904e\u5927\u306b\u898b\u7a4d\u3082\u308b\u50be\u5411\u304c\u3042\u308b\u3002<br \/>\n\u305d\u306e\u305f\u3081\u3001\u6210\u529f\u306e\u53ef\u80fd\u6027\u3092\u4f4e\u304f\u898b\u7a4d\u3082\u308a\u3001\u5931\u6557\u3084\u60aa\u3044\u7d50\u679c\u304c\u8d77\u3053\u308b\u78ba\u7387\u3092\u9ad8\u304f\u898b\u3066\u3057\u307e\u3046\u3002<\/p>\n<h2>\u63d0\u5531\u30fb\u4e3b\u306a\u7814\u7a76\u8005<\/h2>\n<p class=\"\" data-start=\"172\" data-end=\"259\">\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9\u306e\u6982\u5ff5\u306f\u3001\u4e00\u4eba\u306e\u7814\u7a76\u8005\u306b\u3088\u3063\u3066\u660e\u78ba\u306b\u767a\u898b\u30fb\u5b9a\u7fa9\u3055\u308c\u305f\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u8a8d\u77e5\u5fc3\u7406\u5b66\u3084\u884c\u52d5\u7d4c\u6e08\u5b66\u306e\u5206\u91ce\u306b\u304a\u3051\u308b\u8907\u6570\u306e\u7814\u7a76\u8005\u306e\u8ca2\u732e\u306b\u3088\u308a\u3001\u5f90\u3005\u306b\u5f62\u6210\u30fb\u4f53\u7cfb\u5316\u3055\u308c\u3066\u304d\u305f\u3002<\/p>\n<h3 id=\"-\">\u30de\u30fc\u30c6\u30a3\u30f3\u30fb\u30bb\u30ea\u30b0\u30de\u30f3<\/h3>\n<div style=\"width: 264px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.pursuit-of-happiness.org\/wp-content\/uploads\/81aa8ef4-4d93-4725-8d44-fd958756798d.webp\" alt=\"Martin Seligman\" width=\"254\" height=\"300\" \/><p class=\"wp-caption-text\">\u5f15\u7528\uff1a\uff08<a href=\"https:\/\/www.pursuit-of-happiness.org\/history-of-happiness\/martin-seligman-psychology\/\">pursuit-of-happiness.org<\/a>\uff09\u30de\u30fc\u30c6\u30a3\u30f3\u30fb\u30bb\u30ea\u30b0\u30de\u30f3<\/p><\/div>\n<p>\u5fc3\u7406\u5b66\u8005\u306e\u30de\u30fc\u30c6\u30a3\u30f3\u30fb\u30bb\u30ea\u30b0\u30de\u30f3\u306f\u3001\u5b66\u7fd2\u6027\u7121\u529b\u611f\u304a\u3088\u3073\u60b2\u89b3\u7684\u5e30\u5c5e\u30b9\u30bf\u30a4\u30eb\u306e\u7814\u7a76\u3092\u901a\u3058\u3066\u3001\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9\u306e\u7406\u89e3\u306b\u91cd\u8981\u306a\u8ca2\u732e\u3092\u679c\u305f\u3057\u305f\u3002\u5f7c\u306f\u300c\u5e30\u5c5e\u30b9\u30bf\u30a4\u30eb\u300d\u3068\u3044\u3046\u6982\u5ff5\u3092\u63d0\u5531\u3057\u3001\u4eba\u304c\u5426\u5b9a\u7684\u306a\u51fa\u6765\u4e8b\u3092\u3069\u306e\u3088\u3046\u306b\u89e3\u91c8\u3059\u308b\u304b\u304c\u7cbe\u795e\u7684\u5065\u5eb7\u306b\u5927\u304d\u304f\u95a2\u4fc2\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u660e\u3089\u304b\u306b\u3057\u305f\u3002\u7279\u306b\u3001\u60b2\u89b3\u7684\u306a\u5e30\u5c5e\u30b9\u30bf\u30a4\u30eb\u306f\u3001\u3046\u3064\u75c5\u306a\u3069\u306e\u7cbe\u795e\u75be\u60a3\u3068\u95a2\u9023\u6027\u304c\u3042\u308b\u3068\u3055\u308c\u308b\u3002<\/p>\n<p>\u51fa\u5178: Seligman, M. E. P. (1991). Learned Optimism: How to Change Your Mind and Your Life. New York: Knopf.<br \/>\n<a href=\"https:\/\/www.authentichappiness.sas.upenn.edu\/learn\/learnedoptimism\">https:\/\/www.authentichappiness.sas.upenn.edu\/learn\/learnedoptimism<\/a><\/p>\n<h3 id=\"-\">\u30b8\u30a7\u30fc\u30e0\u30ba\u30fb\u30b7\u30a7\u30d1\u30fc\u30c9<\/h3>\n<p>\u30b8\u30a7\u30fc\u30e0\u30ba\u30fb\u30b7\u30a7\u30d1\u30fc\u30c9\u306f\u3001\u4eba\u3005\u304c\u5c06\u6765\u306e\u51fa\u6765\u4e8b\u306b\u3064\u3044\u3066\u4e0d\u5fc5\u8981\u306b\u60b2\u89b3\u7684\u306a\u4e88\u6e2c\u3092\u3059\u308b\u50be\u5411\u3092\u5b9f\u8a3c\u7684\u306b\u793a\u3057\u3001\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9\u306e\u7279\u6027\u306b\u95a2\u3059\u308b\u7406\u89e3\u3092\u6df1\u3081\u305f\u3002<\/p>\n<p>\u51fa\u5178: Shepperd, J. A., Ouellette, J. A., &amp; Fernandez, J. K. (1996). Abandoning unrealistic optimism: Performance estimates and the temporal proximity of self-relevant feedback. Journal of Personality and Social Psychology, 70(4), 844-855.<br \/>\n<a href=\"https:\/\/doi.org\/10.1037\/0022-3514.70.4.844\">https:\/\/doi.org\/10.1037\/0022-3514.70.4.844<\/a><\/p>\n<h3 id=\"-\">\u30bf\u30ea\u30fb\u30b7\u30e3\u30ed\u30c3\u30c8<\/h3>\n<div style=\"width: 310px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large\" src=\"https:\/\/www.londonspeakerbureauasia.com\/wp-content\/uploads\/2023\/05\/Tali-Sharot.jpg\" alt=\"\u30bf\u30ea\u30fb\u30b7\u30e3\u30ed\u30c3\u30c8\u753b\u50cf\" width=\"300\" height=\"300\" \/><p class=\"wp-caption-text\">\u5f15\u7528\uff1a\uff08londonspeakerbureauasia.com\uff09\u30bf\u30ea\u30fb\u30b7\u30e3\u30ed\u30c3\u30c8<\/p><\/div>\n<p>\u30bf\u30ea\u30fb\u30b7\u30e3\u30ed\u30c3\u30c8\u306f\u3001\u697d\u89b3\u30d0\u30a4\u30a2\u30b9\u3068\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9\u306e\u795e\u7d4c\u57fa\u76e4\u306b\u95a2\u3059\u308b\u7814\u7a76\u3092\u884c\u3044\u3001\u7279\u5b9a\u306e\u72b6\u6cc1\u3084\u7cbe\u795e\u72b6\u614b\uff08\u3046\u3064\u75c5\u306a\u3069\uff09\u306b\u304a\u3044\u3066\u3001\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9\u304c\u9855\u8457\u306b\u306a\u308b\u3053\u3068\u3092\u660e\u3089\u304b\u306b\u3057\u305f\u3002\u5f7c\u5973\u306e\u7814\u7a76\u306f\u3001\u8133\u5185\u3067\u3053\u308c\u3089\u306e\u30d0\u30a4\u30a2\u30b9\u304c\u3069\u306e\u3088\u3046\u306b\u51e6\u7406\u3055\u308c\u3066\u3044\u308b\u304b\u306b\u95a2\u3059\u308b\u7406\u89e3\u3092\u6df1\u3081\u305f\u3002<\/p>\n<p>\u8457\u66f8\u306b\u306f\u300eThe Influential Mind\u300f\u3068\u300eThe Optimism Bias\u300f\u304c\u3042\u308b\u3002<\/p>\n<p>\u51fa\u5178: Sharot, T. (2011). The optimism bias. Current Biology, 21(23), R941-R945.<br \/>\n<a href=\"https:\/\/www.cell.com\/current-biology\/fulltext\/S0960-9822(11)01191-2\">https:\/\/www.cell.com\/current-biology\/fulltext\/S0960-9822(11)01191-2<\/a><\/p>\n<h3 data-start=\"172\" data-end=\"259\">\u30c0\u30cb\u30a8\u30eb\u30fb\u30ab\u30fc\u30cd\u30de\u30f3\u3068\u30a8\u30a4\u30e2\u30b9\u30fb\u30c8\u30d9\u30eb\u30b9\u30ad\u30fc<\/h3>\n<div id=\"attachment_14836\" style=\"width: 327px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-14836\" class=\" wp-image-14836\" src=\"https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2019\/02\/daniel-kerneman.png\" alt=\"\u8096\u50cf \u30c0\u30cb\u30a8\u30eb\u30fb\u30ab\u30fc\u30cd\u30de\u30f3\" width=\"317\" height=\"411\" \/><p id=\"caption-attachment-14836\" class=\"wp-caption-text\">\u30c0\u30cb\u30a8\u30eb\u30fb\u30ab\u30fc\u30cd\u30de\u30f3\uff08\u5f15\u7528\uff1aWikipedia\uff09<\/p><\/div>\n<p>\u4e3b\u306a\u7814\u7a76\u8005\u306b\u542b\u307e\u308c\u308b\u30c0\u30cb\u30a8\u30eb\u30fb\u30ab\u30fc\u30cd\u30de\u30f3\u3068\u30a8\u30a4\u30e2\u30b9\u30fb\u30c8\u30d9\u30eb\u30b9\u30ad\u30fc\u306f\u3001\u8a8d\u77e5\u30d0\u30a4\u30a2\u30b9\u7814\u7a76\u306e\u57fa\u790e\u3092\u7bc9\u3044\u305f\u3002<\/p>\n<p>\u5f7c\u3089\u306f1970\u5e74\u4ee3\u306b\u3001\u4eba\u9593\u306e\u5224\u65ad\u3068\u610f\u601d\u6c7a\u5b9a\u306b\u95a2\u308f\u308b\u69d8\u3005\u306a\u30d0\u30a4\u30a2\u30b9\u3092\u4f53\u7cfb\u7684\u306b\u7814\u7a76\u3057\u3001\u300c\u30d7\u30ed\u30b9\u30da\u30af\u30c8\u7406\u8ad6\u300d\u3092\u63d0\u5531\u3057\u305f\u3002\u3053\u306e\u7406\u8ad6\u306f\u3001\u4eba\u3005\u304c\u640d\u5931\u3092\u904e\u5927\u8a55\u4fa1\u3059\u308b\u50be\u5411\u3001\u3059\u306a\u308f\u3061\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9\u306e\u91cd\u8981\u306a\u5074\u9762\u3092\u793a\u3057\u3066\u3044\u308b\u3002\u5f7c\u3089\u306e\u7814\u7a76\u306f\u3001\u305d\u306e\u5f8c\u306e\u8a8d\u77e5\u30d0\u30a4\u30a2\u30b9\u7814\u7a76\u306e\u571f\u53f0\u3068\u306a\u3063\u305f\u3002<\/p>\n<p>\u51fa\u5178: Kahneman, D., &amp; Tversky, A. (1979). Prospect Theory: An Analysis of Decision under Risk. Econometrica, 47(2), 263-291.<br \/>\n<a href=\"https:\/\/www.jstor.org\/stable\/1914185\">https:\/\/www.jstor.org\/stable\/1914185<\/a><\/p>\n<h2 id=\"-\">\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9\u306e\u30e1\u30ab\u30cb\u30ba\u30e0<\/h2>\n<p class=\"\" data-start=\"1710\" data-end=\"1812\">\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9\u306f\u3001\u4eba\u9593\u306e\u8133\u304c\u6f5c\u5728\u7684\u306a\u8105\u5a01\u3084\u5371\u967a\u306b\u654f\u611f\u306b\u53cd\u5fdc\u3059\u308b\u3088\u3046\u9032\u5316\u3057\u3066\u304d\u305f\u3053\u3068\u3068\u95a2\u9023\u3057\u3066\u3044\u308b\u3002\u7956\u5148\u306b\u3068\u3063\u3066\u5371\u967a\u3092\u904e\u5927\u8a55\u4fa1\u3059\u308b\u3053\u3068\u306f\u751f\u5b58\u306e\u305f\u3081\u306b\u6709\u5229\u3067\u3042\u308a\u3001\u305d\u306e\u50be\u5411\u304c\u73fe\u4ee3\u4eba\u306b\u3082\u6b8b\u3063\u3066\u3044\u308b\u3068\u8003\u3048\u3089\u308c\u3066\u3044\u308b\u3002<\/p>\n<p class=\"\" data-start=\"1814\" data-end=\"1843\">\u30de\u30fc\u30c6\u30a3\u30f3\u30fb\u30bb\u30ea\u30b0\u30de\u30f3\u306f\u3053\u306e\u73fe\u8c61\u3092\u6b21\u306e\u3088\u3046\u306b\u8aac\u660e\u3057\u3066\u3044\u308b\uff1a<\/p>\n<blockquote><p>\u300c\u60b2\u89b3\u4e3b\u7fa9\u8005\u306f\u3001\u30cd\u30ac\u30c6\u30a3\u30d6\u306a\u51fa\u6765\u4e8b\u3092\u6c38\u7d9a\u7684\u304b\u3064\u666e\u904d\u7684\u306a\u3082\u306e\u3068\u3057\u3066\u89e3\u91c8\u3057\u3001\u81ea\u5206\u81ea\u8eab\u3092\u8cac\u3081\u308b\u50be\u5411\u304c\u3042\u308b\u3002\u4e00\u65b9\u3001\u697d\u89b3\u4e3b\u7fa9\u8005\u306f\u3001\u540c\u3058\u51fa\u6765\u4e8b\u3092\u4e00\u6642\u7684\u304b\u3064\u7279\u5b9a\u306e\u72b6\u6cc1\u306b\u9650\u5b9a\u3055\u308c\u305f\u3082\u306e\u3068\u3057\u3066\u6349\u3048\u3001\u81ea\u5206\u4ee5\u5916\u306e\u8981\u56e0\u306b\u539f\u56e0\u3092\u6c42\u3081\u308b\u300d<\/p>\n<p>\u2014 \u30de\u30fc\u30c6\u30a3\u30f3\u30fb\u30bb\u30ea\u30b0\u30de\u30f3\uff08\u300e\u5b66\u7fd2\u6027\u7121\u529b\u611f\u300f\u306e\u8457\u8005\uff09<\/p>\n<p>\u51fa\u5178: Seligman, M. E. P. (1991). Learned Optimism: How to Change Your Mind and Your Life. New York: Knopf.<br \/>\n<a href=\"https:\/\/www.authentichappiness.sas.upenn.edu\/learn\/learnedoptimism\">https:\/\/www.authentichappiness.sas.upenn.edu\/learn\/learnedoptimism<\/a><\/p><\/blockquote>\n<h2 id=\"-\">\u5b9f\u4f8b<\/h2>\n<h3 id=\"1-\">1. \u5c31\u8077\u6d3b\u52d5\u306b\u304a\u3051\u308b\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-32261\" src=\"https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-jobs-300x300.png\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-jobs-300x300.png 300w, https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-jobs-150x150.png 150w, https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-jobs-768x768.png 768w, https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-jobs.png 1024w, https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-jobs-640x640.png 640w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>\u5927\u5b66\u751f\u306e\u5c31\u8077\u6d3b\u52d5\u3067\u306f\u3001\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9\u306b\u3088\u3063\u3066\u5b9f\u969b\u3088\u308a\u3082\u4f4e\u3044\u5185\u5b9a\u7372\u5f97\u7387\u3092\u4e88\u6e2c\u3059\u308b\u50be\u5411\u304c\u3042\u308b\u3002\u4f8b\u3048\u3070\u3001\u3042\u308b\u7814\u7a76\u3067\u306f\u3001\u5b66\u751f\u304c\u5e73\u5747\u3057\u306630\uff05\u3068\u4e88\u60f3\u3057\u305f\u306e\u306b\u5bfe\u3057\u3001\u5b9f\u969b\u306e\u63a1\u7528\u7387\u306f45\uff05\u3067\u3042\u3063\u305f\u3002\u3053\u306e\u7d50\u679c\u306f\u3001\u5b66\u751f\u304c\u81ea\u8eab\u306e\u5c31\u8077\u53ef\u80fd\u6027\u3092\u904e\u5c0f\u8a55\u4fa1\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u308b\u3002<\/p>\n<p>\u51fa\u5178: Shepperd, J. A., Ouellette, J. A., &amp; Fernandez, J. K. (1996). Abandoning unrealistic optimism: Performance estimates and the temporal proximity of self-relevant feedback. Journal of Personality and Social Psychology, 70(4), 844-855.<br \/>\n<a href=\"https:\/\/doi.org\/10.1037\/0022-3514.70.4.844\">https:\/\/doi.org\/10.1037\/0022-3514.70.4.844<\/a><\/p>\n<h3 id=\"2-\">2. \u5065\u5eb7\u4e0d\u5b89\u3068\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-32260\" src=\"https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-medical-300x300.png\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-medical-300x300.png 300w, https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-medical-150x150.png 150w, https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-medical-768x768.png 768w, https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-medical.png 1024w, https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-medical-640x640.png 640w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>\u8efd\u5ea6\u306a\u982d\u75db\u3084\u8179\u75db\u306a\u3069\u306e\u75c7\u72b6\u3092\u300c\u6df1\u523b\u306a\u75c5\u6c17\u306e\u5146\u5019\u304b\u3082\u3057\u308c\u306a\u3044\u300d\u3068\u8003\u3048\u3001\u5b9f\u969b\u306e\u78ba\u7387\u4ee5\u4e0a\u306b\u91cd\u7be4\u306a\u75c5\u6c17\u3092\u7591\u3046\u50be\u5411\u304c\u3042\u308b\u3002<\/p>\n<p>\u51fa\u5178: Barsky, A. J., Saintfort, R., Rogers, M. P., &amp; Borus, J. F. (2002). Nonspecific medication side effects and the nocebo phenomenon. JAMA, 287(5), 622-627.<br \/>\n<a href=\"https:\/\/jamanetwork.com\/journals\/jama\/article-abstract\/194702\">https:\/\/jamanetwork.com\/journals\/jama\/article-abstract\/194702<\/a><\/p>\n<h3 id=\"3-\">3. \u6295\u8cc7\u5224\u65ad\u306b\u304a\u3051\u308b\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-32259\" src=\"https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-invester-300x300.png\" alt=\"\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9\u3000\u6295\u8cc7\u5bb6\" width=\"300\" height=\"300\" srcset=\"https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-invester-300x300.png 300w, https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-invester-150x150.png 150w, https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-invester-768x768.png 768w, https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-invester.png 1024w, https:\/\/uxdaystokyo.com\/articles\/wp-content\/uploads\/2025\/05\/pessimism-bias-invester-640x640.png 640w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>\u682a\u5f0f\u5e02\u5834\u304c\u4e0b\u843d\u3057\u3066\u3044\u308b\u969b\u3001\u6295\u8cc7\u5bb6\u306f\u5c06\u6765\u306e\u56de\u5fa9\u53ef\u80fd\u6027\u3092\u904e\u5c0f\u8a55\u4fa1\u3057\u3001\u3055\u3089\u306a\u308b\u4e0b\u843d\u3092\u4e88\u6e2c\u3057\u304c\u3061\u3067\u3042\u308b\u3002\u3053\u308c\u306f\u3001\u5e02\u5834\u306e\u30d1\u30cb\u30c3\u30af\u58f2\u308a\u3092\u5f15\u304d\u8d77\u3053\u3059\u8981\u56e0\u306e\u4e00\u3064\u3068\u3055\u308c\u3066\u3044\u308b\u3002<\/p>\n<p>\u51fa\u5178: De Bondt, W. F. M., &amp; Thaler, R. H. (1985). Does the Stock Market Overreact? The Journal of Finance, 40(3), 793-805.<br \/>\n<a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/abs\/10.1111\/j.1540-6261.1985.tb05004.x\">https:\/\/onlinelibrary.wiley.com\/doi\/abs\/10.1111\/j.1540-6261.1985.tb05004.x<\/a><\/p>\n<h2 id=\"-\">\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9\u306e\u5f71\u97ff<\/h2>\n<h3 data-start=\"2897\" data-end=\"2926\">\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u5f71\u97ff\u3092\u4eba\u9593\u306e\u884c\u52d5\u3084\u611f\u60c5\u306b\u53ca\u307c\u3059\uff1a<\/h3>\n<ul>\n<li class=\"\" data-start=\"2928\" data-end=\"2975\">\n<p class=\"\" data-start=\"2930\" data-end=\"2975\"><strong data-start=\"2930\" data-end=\"2941\">\u610f\u601d\u6c7a\u5b9a\u306e\u6b6a\u307f<\/strong>\uff1a\u30ea\u30b9\u30af\u3092\u904e\u5927\u8a55\u4fa1\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u91cd\u8981\u306a\u6a5f\u4f1a\u3092\u9003\u3059\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002<\/p>\n<\/li>\n<li class=\"\" data-start=\"2976\" data-end=\"3037\">\n<p class=\"\" data-start=\"2978\" data-end=\"3037\"><strong data-start=\"2978\" data-end=\"2992\">\u4e0d\u5b89\u3068\u30b9\u30c8\u30ec\u30b9\u306e\u5897\u52a0<\/strong>\uff1a\u5b9f\u969b\u306b\u306f\u8d77\u3053\u308a\u306b\u304f\u3044\u60aa\u3044\u7d50\u679c\u3092\u904e\u5ea6\u306b\u5fc3\u914d\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30f3\u30bf\u30eb\u30d8\u30eb\u30b9\u306b\u60aa\u5f71\u97ff\u3092\u53ca\u307c\u3059\u3002<\/p>\n<\/li>\n<li class=\"\" data-start=\"3038\" data-end=\"3086\">\n<p class=\"\" data-start=\"3040\" data-end=\"3086\"><strong data-start=\"3040\" data-end=\"3051\">\u81ea\u5df1\u6210\u9577\u306e\u5236\u9650<\/strong>\uff1a\u300c\u3069\u3046\u305b\u3046\u307e\u304f\u3044\u304b\u306a\u3044\u300d\u3068\u3044\u3046\u601d\u8003\u306b\u3088\u308a\u3001\u6311\u6226\u3059\u308b\u610f\u6b32\u304c\u640d\u306a\u308f\u308c\u308b\u3002<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"3088\" data-end=\"3128\">\u30ab\u30fc\u30cd\u30de\u30f3\u3068\u30c8\u30d9\u30eb\u30b9\u30ad\u30fc\u306f\u3001\u3053\u306e\u3088\u3046\u306a\u8a8d\u77e5\u30d0\u30a4\u30a2\u30b9\u306b\u3064\u3044\u3066\u6b21\u306e\u3088\u3046\u306b\u8ff0\u3079\u3066\u3044\u308b\uff1a<\/h3>\n<blockquote><p>\u300c\u4eba\u9593\u306e\u5224\u65ad\u3068\u610f\u601d\u6c7a\u5b9a\u306f\u3001\u7cfb\u7d71\u7684\u306a\u8a8d\u77e5\u30d0\u30a4\u30a2\u30b9\u306b\u3088\u3063\u3066\u6b6a\u3081\u3089\u308c\u308b\u3053\u3068\u304c\u3042\u308b\u3002\u3053\u308c\u3089\u306e\u30d0\u30a4\u30a2\u30b9\u306f\u3001\u79c1\u305f\u3061\u304c\u5408\u7406\u7684\u306b\u8003\u3048\u3066\u3044\u308b\u3068\u601d\u3063\u3066\u3044\u308b\u3068\u304d\u3067\u3055\u3048\u3001\u9078\u629e\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u300d<\/p>\n<p>\u2014 \u30c0\u30cb\u30a8\u30eb\u30fb\u30ab\u30fc\u30cd\u30de\u30f3\u3068\u30a8\u30a4\u30e2\u30b9\u30fb\u30c8\u30d9\u30eb\u30b9\u30ad\u30fc\uff08\u30d7\u30ed\u30b9\u30da\u30af\u30c8\u7406\u8ad6\u306e\u63d0\u5531\u8005\uff09<\/p>\n<p>\u51fa\u5178: Kahneman, D., &amp; Tversky, A. (1979). Prospect Theory: An Analysis of Decision under Risk. Econometrica, 47(2), 263-291.<br \/>\n<a href=\"https:\/\/www.jstor.org\/stable\/1914185\">https:\/\/www.jstor.org\/stable\/1914185<\/a><\/p><\/blockquote>\n<h2 id=\"-\">\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9\u3078\u306e\u5bfe\u51e6\u6cd5<\/h2>\n<p class=\"\" data-start=\"3408\" data-end=\"3436\">\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9\u306b\u5bfe\u51e6\u3059\u308b\u65b9\u6cd5\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308b\uff1a<\/p>\n<ul>\n<li data-start=\"3408\" data-end=\"3436\">\u8a3c\u62e0\u306b\u57fa\u3065\u304f\u601d\u8003\uff1a\u611f\u60c5\u306b\u6d41\u3055\u308c\u305a\u3001\u4e8b\u5b9f\u3084\u30c7\u30fc\u30bf\u3092\u3082\u3068\u306b\u5224\u65ad\u3059\u308b\u3002<\/li>\n<li data-start=\"3408\" data-end=\"3436\">\u8a8d\u77e5\u884c\u52d5\u7642\u6cd5\u306e\u6280\u6cd5\uff1a\u81ea\u52d5\u7684\u306a\u30cd\u30ac\u30c6\u30a3\u30d6\u601d\u8003\u3092\u7279\u5b9a\u3057\u3001\u73fe\u5b9f\u7684\u306a\u601d\u8003\u3078\u3068\u4fee\u6b63\u3059\u308b\u3002<\/li>\n<li data-start=\"3408\" data-end=\"3436\">\u30de\u30a4\u30f3\u30c9\u30d5\u30eb\u30cd\u30b9\uff1a\u73fe\u5728\u306e\u77ac\u9593\u306b\u610f\u8b58\u3092\u5411\u3051\u3001\u904e\u5270\u306a\u5fc3\u914d\u3092\u6291\u3048\u308b\u3002<\/li>\n<li data-start=\"3408\" data-end=\"3436\">\u904e\u53bb\u306e\u6210\u529f\u4f53\u9a13\u306e\u632f\u308a\u8fd4\u308a\uff1a\u81ea\u8eab\u306e\u6210\u529f\u4f53\u9a13\u3092\u601d\u3044\u51fa\u3059\u3053\u3068\u3067\u3001\u81ea\u4fe1\u3092\u9ad8\u3081\u308b\u3002<\/li>\n<\/ul>\n<p>\u51fa\u5178: Beck, A. T., &amp; Dozois, D. J. A. (2011). Cognitive therapy: Current status and future directions. Annual Review of Medicine, 62, 397-409.<br \/>\n<a href=\"https:\/\/www.annualreviews.org\/doi\/10.1146\/annurev-med-052209-100032\">https:\/\/www.annualreviews.org\/doi\/10.1146\/annurev-med-052209-100032<\/a><\/p>\n<h2 id=\"-\">\u307e\u3068\u3081<\/h2>\n<p class=\"\" data-start=\"3843\" data-end=\"4002\">\u60b2\u89b3\u30d0\u30a4\u30a2\u30b9\u306f\u3001\u4eba\u9593\u306e\u8a8d\u77e5\u30b7\u30b9\u30c6\u30e0\u306b\u7d44\u307f\u8fbc\u307e\u308c\u305f\u666e\u904d\u7684\u306a\u50be\u5411\u3067\u3042\u308b\u3002<\/p>\n<p class=\"\" data-start=\"3843\" data-end=\"4002\">\u3053\u306e\u30d0\u30a4\u30a2\u30b9\u3092\u8a8d\u8b58\u3057\u3001\u5ba2\u89b3\u7684\u306a\u8996\u70b9\u3092\u6301\u3064\u3053\u3068\u3067\u3001\u3088\u308a\u6b63\u78ba\u306a\u5224\u65ad\u3068\u5065\u5168\u306a\u7cbe\u795e\u72b6\u614b\u306e\u7dad\u6301\u304c\u53ef\u80fd\u3068\u306a\u308b\u3002<br \/>\n\u305f\u3060\u3057\u3001\u9069\u5ea6\u306a\u60b2\u89b3\u306f\u6709\u76ca\u306a\u5074\u9762\u3082\u3042\u308a\u3001\u904e\u5ea6\u306e\u697d\u89b3\u306b\u3088\u308b\u5931\u6557\u304b\u3089\u8eab\u3092\u5b88\u308b\u5f79\u5272\u3092\u679c\u305f\u3059\u3053\u3068\u3082\u3042\u308b\u3002<br \/>\n\u91cd\u8981\u306a\u306e\u306f\u3001\u30d0\u30e9\u30f3\u30b9\u306e\u53d6\u308c\u305f\u73fe\u5b9f\u7684\u306a\u898b\u65b9\u3092\u990a\u3046\u3053\u3068\u3067\u3042\u308b\u3002<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5c06\u6765\u306e\u51fa\u6765\u4e8b\u3084\u7d50\u679c\u306b\u3064\u3044\u3066\u3001\u73fe\u5b9f\u3088\u308a\u3082\u5426\u5b9a\u7684\u306b\u4e88\u6e2c\u3057\u305f\u308a\u8a55\u4fa1\u3057\u305f\u308a\u3059\u308b\u601d\u8003<\/p>\n","protected":false},"author":2,"featured_media":32260,"template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"English":"Pessimism Bias","footnotes":""},"glossary-category":[21],"glossary_tag":[],"class_list":["post-32241","glossary","type-glossary","status-publish","has-post-thumbnail","hentry","glossary-category-psychology-behavioraleconomics-brain-science"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 4.9.8 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u5c06\u6765\u306e\u51fa\u6765\u4e8b\u3084\u7d50\u679c\u306b\u3064\u3044\u3066\u3001\u73fe\u5b9f\u3088\u308a\u3082\u5426\u5b9a\u7684\u306b\u4e88\u6e2c\u3057\u305f\u308a\u8a55\u4fa1\u3057\u305f\u308a\u3059\u308b\u601d\u8003\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"\u83ca\u6c60 \u8061\"\/>\n\t<meta name=\"google-site-verification\" content=\"IHqL_lkv6btq_CmZRkt-d6ZwoMJOD2yLbg1nhOS9C4Y\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/uxdaystokyo.com\/articles\/glossary\/pessimism-bias\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO Pro (AIOSEO) 4.9.8\" 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