Scientific had volunteers place one hand, palm down, under a board. And they asked the subjects to guess, by pointing to the board with their other hand, where their hidden wrist and fingertips lie. The results? Participants thought their hands were about two thirds wider and one third shorter than they really are. And their finger length estimates got worse as they moved away from their thumbs. That’s interesting, because finger sensitivity decreases as you head towards the pinkie. So our mental body maps seem to represent our ability to feel. Oh, and for their gripping results, let’s give the researchers a hand.