Young Children's Theory of Mind and Emotion

Abstract

In three experiments, children aged 3 to 7 years were tested for their understanding of the impact of beliefs and desires on emotion. Children watched while animal characters were offered various types of container and then predicted their emotional reaction. In Experiment 1, the children (but not the characters) knew that the desirable contents of each container had been removed. The majority of 6-year-olds and a minority of 4-year-olds understood that the characters would be happy with the gift, given their mistaken belief about its contents. In Experiment 2, characters were given containers apparently containing an object they wanted but really containing an object they did not want, or vice versa. Predictions of emotion based on both the desire and the mistaken belief of the characters increased with age. In Experiment 3, characters were given closed containers that might or might not contain an item they wanted. Both 3-and 5-year-olds grasped that the characters' emotional reaction would depend on both their (unconfirmed) beliefs and desires about its content.

The experiments show that preschool children deploy a theory-like conception of mind in predicting emotional reactions. They understand that the emotional impact of a situation depends not on its objective features but on the beliefs and desires that are brought to it.     

The interaction of oculomotor cues and stimulus size in stereoscopic death constancy.

In the natural world, observers perceive an object to have a relatively fixed size and depth over a wide range of distances. Retinal image size and binocular disparity are to some extent scaled with distance to give observers a measure of size constancy. The angle of convergence of the two eyes and their accommodative states are one source of scaling information, but even at close range this must be supplemented by other cues. We have investigated how angular size and oculomotor state interact in the perception of size and depth at different distances. Computer-generated images of planar and stereoscopically simulated 3-D surfaces covered with an irregular blobby texture were viewed on a computer monitor. The monitor rested on a movable sled running on rails within a darkened tunnel. An observer looking into the tunnel could see nothing but the simulated surface so that oculomotor signals provided the major potential cues to the distance of the image. Observers estimated the height of the surface, their distance from it, or the stereoscopically simulated depth within it over viewing distances which ranged from 45 cm to 130 cm. The angular width of the images lay between 2 deg and 10 deg. Estimates of the magnitude of a constant simulated depth dropped with increasing viewing distance when surfaces were of constant angular size. But with surfaces of constant physical size, estimates were more nearly independent of viewing distance. At any one distance, depths appeared to be greater, the smaller the angular size of the image. With most observers, the influence of angular size on perceived depth grew with increasing viewing distance. These findings suggest that there are two components to scaling. One is independent of angular size and related to viewing distance. The second component is related to angular size, and the weighting accorded to it grows with viewing distance. Control experiments indicate that in the tunnel, oculomotor state provides the principal cue to viewing distance. Thus, the contribution of oculomotor signals to depth scaling is gradually supplanted by other cues as viewing distance grows. Binocular estimates of the heights and distances of planar surfaces of different sizes revealed that angular size and viewing distance interact in a similar way to determine perceived size and perceived distance.