short attention span 集中力がない

attention span は注意力持続時間。short attention span は集中力の継続時間が短い、集中力が続かないこと。3:07 I just had to accept that I was a person who had a very short attention span, who would move from one thing to another quite rapidly. 僕は集中力が続かないタイプの人間であることを悟った。

David Bowie speaks to Jeremy Paxman on BBC Newsnight (1999)

1:05 I quickly understood that he had an incredibly short attention span. トランプは実に集中力に欠ける人間だとすぐにわかった。

If Trump wins I'll leave the US': Trump ghostwriter Tony Schwartz - BBC Newsnight

1;54 you have a short attention span. 集中力が欠けますね。

The Ultimate Warrior Meets Arsenio Hall

1:15 ,,, because our attention spans aren't that long. 人の集中力は50分も持たないから、50分ぶっ続けの授業はしません。

Stanford University: This Stanford Professor Is Done With Boring Lectures | Money | TIME