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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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
起源
デスクトップ時代初期においては、コンピューターがタスクを実行して応答する
までの時間として許容されるしきい値は
2
秒、というのが基準として広く受け入れ
られていた。その間にユーザーは次のタスクを考えておくことができるから、とい
うのがその理由だ。
1982
年、
2
人の
IBM
社員、ウォルター・
J
・ドハティとアルヴィ
ンド・
J
・タダニが「応答時間の経済的価値」という研究を
IBM
システムジャーナル
に発表し、この従来の基準に異議を唱えた。その論文には、応答時間が
0.4
秒未満
になると「応答時間の減少により生産性が劇的に向上する」と書かれていた
＊1
。さ
らに著者たちは「コンピューターもユーザーもお互いを待たせることのないペース
でやり取りするときに最も生産性が高まる。コンピューターで作業が行われるコス
トは劇的に下がり、ユーザーは自分の仕事に最も満足を覚え、仕事の質も改善され
る傾向にある」と主張した。これは応答時間によって生産性が非連続的に変化する
ことを観察によって発見したドハティ
（この論文の著者の
1
人）
の名前にちなみ、ドハティ
のしきい値として知られる新しい基準となった。
＊1 原注：オリジナルの論文は時間の経過とともに失われてしまったが、ジム・エリオットのブログでそのコピーを読むこと
ができる。https://oreil.ly/8Gpua
140
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.