Brain freeze under interview conditions? One thing that I have noticed is that taking in an interview seems to engage a different part of your mind from coding. I get quite into the flow of chatting, then have to jump into code. Its quite a context switch.

Plus the pressure of someone staring at you.

Then you feel stupid for not answering straight away.

The you get self conscious and start doubting yourself.

What was the question again?

I don't think there is anything especially unusual about it at all.