Agreed. It's hard to say how well this would extend to actually increasing the sentence for the crime itself. In this case, they already have the extra years,

Agreed. It's hard to say how well this would extend to actually increasing the sentence for the crime itself. In this case, they already have the extra years, so I imagine that it looms larger in their mind. I don't know the psychology behind it, and I'd love to hear someone more knowledgeable chime in, but I suspect that the effect is far different than learning about an increased penalty for some hypothetical future crime they might later commit.