Probably depends on the individual. By far the best person to talk to is Tony Youens, who has a website here.
I actually asked Tony to write a piece for THINK on psychics, which you can read here. Hope it helps.
I also recommend you get your friend to read this.
When we launched THINK at Borders Bookstore in London, I advertized the event as involving philosophical discussion of psychic stuff and presented Tony as a genuine psychic. He did some nice stuff – spoon bending, telepathy, etc. and some audience members were taken in. At the end, we revealed the truth, and some people got very upset. In fact one insisted Tony really was psychic – he just didn’t realize it.