Interaction of FP onset and emotion recall on body expressivity. Participants with congenital FP, compared to acquired FP, tended to display more body expressivity, but only when recalling a happy event. Body expressivity is a composite containing ratings of gesture, head movement, trunk movement, and leg movement. Possible body expressivity composite rating scores ranged from 1 to 5, with higher scores indicating more expressivity. Error bars represent standard errors.