Do Morphs Appear Pudgy?
Inspection of the vertical dimensions in Figure 3 suggests that morphs constructed from thin parents may appear pudgy. Such a bias may be introduced if the gross structures of the face such as cheekbones or dimples are smoothed out by the morphing procedure. To test this possibility, twenty-one Indiana University students make ratings on the apparent adiposity of each of the faces. These ratings correlate with the pudginess dimension with an r of .89, indicating that this dimension was interpreted correctly. The obtained morph ratings were compared with values produced by averaging the ratings of the two parents. Overall, the morphs did not appear fatter than their parents. However, inspection of the predicted morph adiposity values suggests a natural grouping that includes the thinnest 7 parent pairs. For this sub-group, the morphs were indeed fatter than predicted by the parent ratings (t(6) = 2.917; p<0.05). This demonstrates that the morphing operation can affect the apparent adipo
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