In case you’re wondering, I heard “Laurel.”
Then I walked across the room and heard Yanny.
Which reminds me: I need to spend some time at Phonetique. I haven’t done so because, unfortunately, they’ve got their exercises set up wrong for implicit learning.
Implicit learning (“information integration” learning) requires immediate feedback. You can’t do 10 items then find out which ones you got wrong. You have to do one at a time and get the answer before you move on.
Speaking of immediate feedback, this is the most important research on learning I’ve ever read.