Dear Dr. Buon and colleagues,
Given your comment (pasted below) on Hamlin et al. (2007) we thought you might find our study of interest: http://www.plosone.org/ar...
Best,
Damian
"Similarly, in Hamlin’s experiment [9], after the puppet has been helped, it jumps up and down till the end of the sequence; this could be interpreted as a state of excitement. By contrast, after the puppet has been hindered, it rolls end-over-end down the hill and then remains immobile till the end of the sequence; this could be interpreted as a depressed state. The differences in the puppets’ motions in the final part of the sequences may reflect differences in underlying emotional or physical states, and could partially contribute to infants’ evaluations, irrespective of whether they understand helping and hindering at a conceptual level."
