{"version":"1.0","provider_name":"\u5927\u962a\u5927\u5b66\u5927\u5b66\u9662\u56fd\u969b\u516c\u5171\u653f\u7b56\u7814\u7a76\u79d1 \u5927\u962a\u5927\u5b66\u6cd5\u5b66\u90e8\u56fd\u969b\u516c\u5171\u653f\u7b56\u5b66\u79d1 | OSIPP\uff08Osaka School of International Public Policy\uff09","provider_url":"https:\/\/www.osipp.osaka-u.ac.jp\/ja\/","author_name":"Library","author_url":"https:\/\/www.osipp.osaka-u.ac.jp\/ja\/news\/author\/library\/","title":"11\u6708\u306e\u7814\u7a76\u696d\u7e3e - \u5927\u962a\u5927\u5b66\u5927\u5b66\u9662\u56fd\u969b\u516c\u5171\u653f\u7b56\u7814\u7a76\u79d1 \u5927\u962a\u5927\u5b66\u6cd5\u5b66\u90e8\u56fd\u969b\u516c\u5171\u653f\u7b56\u5b66\u79d1 | OSIPP\uff08Osaka School of International Public Policy\uff09","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"8sKmQ10A5M\"><a href=\"https:\/\/www.osipp.osaka-u.ac.jp\/ja\/news\/20251202\/\">11\u6708\u306e\u7814\u7a76\u696d\u7e3e<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.osipp.osaka-u.ac.jp\/ja\/news\/20251202\/embed\/#?secret=8sKmQ10A5M\" width=\"600\" height=\"338\" title=\"&#8220;11\u6708\u306e\u7814\u7a76\u696d\u7e3e&#8221; &#8212; \u5927\u962a\u5927\u5b66\u5927\u5b66\u9662\u56fd\u969b\u516c\u5171\u653f\u7b56\u7814\u7a76\u79d1 \u5927\u962a\u5927\u5b66\u6cd5\u5b66\u90e8\u56fd\u969b\u516c\u5171\u653f\u7b56\u5b66\u79d1 | OSIPP\uff08Osaka School of International Public Policy\uff09\" data-secret=\"8sKmQ10A5M\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.osipp.osaka-u.ac.jp\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/www.osipp.osaka-u.ac.jp\/wp-content\/uploads\/2026\/03\/Achievement-2.jpg","thumbnail_width":2000,"thumbnail_height":1000,"description":"OSIPP\u57fa\u5e79\u8b1b\u5ea7\u6559\u54e1\u306e11\u6708\u306e\u7814\u7a76\u696d\u7e3e\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002 \u30fb\u677e\u5cf6\u6cd5\u660e \u5148\u751f\u3000\u30fb\u548c\u4ec1\u5065\u592a\u90ce \u5148\u751f\u3000 Noriaki Matsushima\uff08\u8ad6\u6587\uff09 Jiajia Cong, Noriaki Matsushima (2025) &#8220;The effects of personal data management on competition and welfare&#8221;, Management Science, Forthcoming. (\u67fb\u8aad\u3042\u308a) Abstract:This study examines the impact of consumers&#8217; personal data management on firm competition in the data collection and application markets, as well as on welfare outcomes. Consumers purchase products from differentiated firms in these two markets. Initially, in the data collection market, firms compete to collect consumer data to predict preferences in the data application market, enabling them to offer personalized prices to their targeted customers. Before firms set prices in the data application market, targeted consumers can erase their data at a fixed cost, thereby becoming untargeted. We show that personal data management leads to higher prices, lower firm profits, negative externalities among consumers, and reduced consumer surplus in the data application market. In the data collection market, personal data management intensifies competition and improves consumer surplus. Our analysis further explores extended scenarios of personal data management\u2014including the rights to opt out of data collection, data portability, and data ownership\u2014and reveals that firms&#8217; two-market profits and total consumer surplus change non-monotonically with consumers&#8217; data rights. Specifically, granting consumers data rights beyond simple data erasure can reverse the effects of erasure alone, benefiting firms while harming consumers. Moreover, data management influences cross-market competition quite differently depending on which market consumers exercise their data rights. Finally, we discuss proactive strategies firms can employ to maintain profitability under personal data laws. \u548c\u4ec1\u5065\u592a\u90ce \uff08\u8ad6\u6587\uff09 \u300c\u56fd\u5bb6\u7ba1\u8f44\u6a29\u306b\u95a2\u3059\u308b\u8b70\u8ad6\u67a0\u7d44\u307f\u306e\u518d\u691c\u8a0e\u300d\u3001\u68ee\u7530\u7ae0\u592b\u30fb\u5bfa\u8c37\u5e83\u53f8\u30fb\u5409\u7530\u8129\u30fb\u5ca9\u6708\u76f4\u6a39\u7de8\u300e\u56fd\u969b\u6cd5\u306e\u7406\u8ad6\u3068\u5b9f\u73fe\u30fc\u5ca9\u6ca2\u96c4\u53f8\u5148\u751f\u53e4\u7a00\u8a18\u5ff5\u300f\uff08\u4fe1\u5c71\u793e\u30012025\u5e74\uff09211-229\u9801\u3001\uff08\u67fb\u8aad\u306a\u3057\uff09https:\/\/www.shinzansha.co.jp\/book\/b10153266.html \u6982\u8981: \u56fd\u5bb6\u7ba1\u8f44\u6a29\u306b\u95a2\u3059\u308b\u56fd\u969b\u6cd5\u5b66\u306e\u5f93\u6765\u306e\u8b70\u8ad6\u306f\u3001\u2460\u56fd\u5bb6\u7ba1\u8f44\u6a29\u3092\u3044\u304f\u3064\u304b\u306b\u5206\u985e\u3059\u308b\uff082\u5206\u985e\u307e\u305f\u306f3\u5206\u985e\uff09\u3001\u2461\u3044\u304f\u3064\u304b\u306b\u5206\u985e\u3057\u305f\u3082\u306e\u306e\u3046\u3061\u300c\u57f7\u884c\u7ba1\u8f44\u6a29\u300d\u306f\u4ed6\u56fd\u9818\u57df\u5185\u3067\u884c\u4f7f\uff08\u57df\u5916\u884c\u4f7f\uff09\u3067\u304d\u306a\u3044\u4e00\u65b9\u3001\u300c\u898f\u5f8b\u7ba1\u8f44\u6a29\u300d\uff08\u300c\u7acb\u6cd5\u7ba1\u8f44\u6a29\u300d\uff09\u306f\u4e00\u5b9a\u306e\u6761\u4ef6\u306e\u4e0b\u3067\u300c\u57df\u5916\u9069\u7528\u300d\u3067\u304d\u308b\u3001\u2462\u898f\u5f8b\u7ba1\u8f44\u6a29\u3092\u884c\u4f7f\uff08\u7279\u306b\u57df\u5916\u9069\u7528\uff09\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u300c\u5c5e\u5730\u4e3b\u7fa9\u300d\u3001\u300c\u5c5e\u4eba\u4e3b\u7fa9\u300d\u3001\u300c\u4fdd\u8b77\u4e3b\u7fa9\u300d\u3068\u3044\u3063\u305f\u300c\u7ba1\u8f44\u6a29\u306e\u6839\u62e0\u30fb\u539f\u5247\uff08bases\/principles of jurisdiction\uff09\u300d\u306b\u57fa\u3065\u304b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3001\u3068\u3044\u30463\u3064\u306e\u5171\u901a\u8a8d\u8b58\u3092\u57fa\u76e4\u3068\u3057\u3066\u5c55\u958b\u3055\u308c\u3066\u304d\u305f\u3002\u672c\u7a3f\u306f\u3001\u3053\u306e\u3088\u3046\u306a\u8b70\u8ad6\u67a0\u7d44\u307f\u306e\u9069\u5207\u6027\u3092\u518d\u691c\u8a0e\u3057\u3001\u56fd\u5bb6\u7ba1\u8f44\u6a29\u554f\u984c\u3092\u8ad6\u305a\u308b\u305f\u3081\u306e\u3088\u308a\u9069\u5207\u306a\u67a0\u7d44\u307f\u3092\u63d0\u793a\u3059\u308b\u3082\u306e\u3067\u3042\u308b\u3002\u5177\u4f53\u7684\u306b\u306f\u3001\u56fd\u5bb6\u7ba1\u8f44\u6a29\u5206\u985e\u8ad6\uff08\u2460\uff09\u306f\u4e0d\u6bdb\u306a\u8b70\u8ad6\u3067\u3042\u3063\u3066\u6b62\u3081\u308b\u3079\u304d\u3067\u3042\u308b\u3053\u3068\u3001\u5f93\u6765\u306e\u5b66\u8aac\u304c\u300c\u57f7\u884c\u7ba1\u8f44\u6a29\u300d\u306e\u554f\u984c\u304a\u3088\u3073\u300c\u898f\u5f8b\u7ba1\u8f44\u6a29\u300d\u306e\u554f\u984c\u3068\u547c\u3093\u3067\u8ad6\u3058\u3066\u304d\u305f\u306e\u306f\uff08\u2461\uff09\u3001\u305d\u308c\u305e\u308c\u3001\uff08a\uff09\u300c\u4ed6\u56fd\u9818\u57df\u5185\u3067\u3001\u307e\u305f\u306f\u4ed6\u56fd\u9818\u57df\u5185\u306e\u4eba\u3084\u7269\u306b\u5bfe\u3057\u3066\u3001\u5f53\u8a72\u4ed6\u56fd\u306e\u540c\u610f\u306a\u3057\u306b\u884c\u3063\u3066\u306f\u306a\u3089\u306a\u3044\u306e\u306f\u3069\u306e\u3088\u3046\u306a\u884c\u70ba\u304b\u300d\u3001\uff08b\uff09\u300c\u4eba\u3084\u4f01\u696d\u306e\u884c\u52d5\u3092\u56fd\u304c\u6cd5\u4ee4\u306b\u3088\u308a\u898f\u5236\u306e\u5bfe\u8c61\u306b\u3057\u3066\u3088\u3044\u306e\u306f\u3069\u306e\u3088\u3046\u306a\u5834\u5408\u304b\u300d\u3068\u3044\u3046\u554f\u984c\u3068\u3057\u3066\u5b9a\u5f0f\u5316\u3067\u304d\u308b\u304c\u3001\u3053\u308c\u30892\u3064\u306e\u554f\u984c\u306f\u3001\u300c\u6cd5\u4ee4\u306e\u5236\u5b9a\u30fb\u9069\u7528\u30fb\u57f7\u884c\u306b\u95a2\u308f\u308b\u554f\u984c\u300d\u3068\u3044\u3046\u70b9\u306b\u304a\u3044\u3066\u5171\u901a\u3059\u308b\u3060\u3051\u3067\u3001\u6027\u8cea\u3068\u3057\u3066\u306f\u76f8\u4e92\u306b\u9023\u7d9a\u6027\u306e\u306a\u3044\u30012\u3064\u306e\u307e\u3063\u305f\u304f\u7570\u306a\u308b\u554f\u984c\u3068\u8003\u3048\u308b\u3079\u304d\u3067\u3042\u308b\u3053\u3068\u3001\uff08b\uff09\u306e\u554f\u984c\u3092\u8ad6\u305a\u308b\u305f\u3081\u306e\u67a0\u7d44\u307f\u3068\u3057\u3066\u300c\u25ef\u25ef\u4e3b\u7fa9\u300d\u30a2\u30d7\u30ed\u30fc\u30c1\uff08\u2462\uff09\u306f\u9069\u5207\u3067\u306f\u306a\u304f\u3001\u6cd5\u5206\u91ce\u3054\u3068\u30fb\u884c\u70ba\u985e\u578b\u3054\u3068\u306e\u691c\u8a0e\u304c\u5fc5\u8981\u3067\u3042\u308b\u3053\u3068\uff08\u4f8b\u3048\u3070\u3001\u300c\u500b\u4eba\u60c5\u5831\u4fdd\u8b77\u306b\u3064\u3044\u3066\u56fd\u969b\u6cd5\u306f\u3069\u306e\u56fd\u306b\u7ba1\u8f44\u6a29\u3092\u914d\u5206\u3057\u3066\u3044\u308b\u304b\u300d\u3001\u300c\u7af6\u4e89\u5236\u9650\u884c\u70ba\u306e\u898f\u5236\u306b\u3064\u3044\u3066\u56fd\u969b\u6cd5\u306f\u3069\u306e\u56fd\u306b\u7ba1\u8f44\u6a29\u3092\u914d\u5206\u3057\u3066\u3044\u308b\u304b\u300d\u3068\u3044\u3063\u305f\u3088\u3046\u306b\u3001\u300c\u554f\u984c\uff08\u5358\u4f4d\u6cd5\u5f8b\u95a2\u4fc2\uff09\u306e\u5074\u304b\u3089\u300d\u8003\u3048\u308b\u30a2\u30d7\u30ed\u30fc\u30c1\u306e\u5fc5\u8981\u6027\uff09\u3092\u8ad6\u3058\u305f\u3002"}