Games : Does it matter which character disarms a trap?

When disarming traps, I usually use the most rogue-like member of the party- typically my Grave Robber or Bounty Hunter. It seems to work more often but this might just be the placebo effect.

I can't find any visible stat which would affect this. Aside from changing which character risks getting hit, does using a different character to disarm a trap increase the chance of success?