[Sherlock]

Wow, that's surprising, I'd love to hear about some (anecdotal) evidence supporting this.

[SkyMarshal]

In college they tried to teach us recursion using C and I didn't get it. Later I discovered The Little Schemer and SICP and it just clicked. It's easier to do in Scheme/Lisp, and those books also explain it better. There's one anecdote. :)

[eru]

I heard Matthias Felleisen saying the same.