January 2025
Intermediate to advanced
188 pages
4h 13m
Japanese
Content preview from UXデザインの法則 第2版 ―最高のプロダクトとサービスを支える心理学
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デフォルト
選択設計
（
choice architecture
）
においては、デフォルト設定が何より重要だ。ほと
んどの人は設定変更などしない。それゆえ、意思決定の舵を握っているのは、デフォ
ルト設定ということになる。それはたとえ、何が意思決定されたのか本人が意識し
ていない場合であってもだ。結果として、デフォルト設定は必ずしも本人にとって
最善の利益ではない形で人々に影響を及ぼす可能性がある。例えば、
2011
年の研
究によると、
Facebook
のプライバシーのデフォルト設定がユーザーの想定通りで
あったのはわずか
37
％で、ユーザーが思っているよりも多くの人にコンテンツや個
人情報が公開されるようになっていた
［図 12- 6］
＊7＊8
。
図12-5 TikTokの機械学習アルゴリズムによるパーソナライズされたコンテンツリコメンデーション。
出典：TikTok、2023年
＊7 原注：Yabing Liu, Krishna P. Gummadi, Balachander Krishnamurthy, and Alan Mislove, “Analyzing Facebook
Privacy Settings: User Expectations vs. Reality,” in IMC ʼ11: Proceedings of the 2011 ACM SIGCOMM Internet
Measurement Conference (New York: Association for Computing ...
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