The original version of this experiment was carried out more than 30 years ago, but it still has the power to amaze (Neisser & Becklen, 1975).
这个实验的初始版本是在30年前做的，而这种神奇的实验结果一直延续至今，并没有改变。
2
So this is a study that we did about 12 years ago, and it's based on some earlier work by our colleague Ulric Neisser, but it extends it in an important way.