>some portion of interviewees are losing interest in joining your company just because they didn’t think they did well, despite the fact that they actually did. This is the key takeaway for me. This is IMO and experience probably based on a "sour grapes" type defense mechanism, where candidates will internally try to talk themselves out of wanting a job that they felt they didn't get. They walk out of the interview f…
The company I work at has a good solution to this. We fly candidates out for an onsite interview and at the end of the day, if we decide we want to hire them, we give them an offer in person. Our goal is to get them to verbally accept before they head back home.
If you were to indicate, in any way, that you'd retract the offer unless I accept right there before I head home, I'd reject it right there before I head home.
In other words, I don't think that's a good solution at all.