Growth systematically changes the body proportions of both humans and animals so that the ratio of head height to body height decreases with age. Prior studies have demonstrated that body proportions provide effective information for age perception. To test the proposal that illustrators incorporate this information into their drawings, measurements were made of the head and body heights of 100 pairs of animals appearing in children's picture books. In 93 pairs, the animal intended to be perceived as older had a smaller head-to-body ratio than did the younger animal. Ratings collected for 25 of these pairs showed that both perceived age and cuteness are significantly correlated with body proportions. The magnitudes of the correlations were only modest, suggesting that other aspects of the drawings influenced perceived age and cuteness. In addition, observers reported that body proportions are only one of a variety of factors influencing age and cuteness perception. As has been found in other studies, perceived age and cuteness were negatively correlated.
124How can events be portrayed in static pictures? One potential answer to this question is suggested by J. J. Gibson's approach to picture perception (1971). He argued that pictures and real objects can lead to the same perceptions because they contain the same information. Applied to perception of events portrayed in static pictures, this theory would hold that aspects of the patterns of change that serve as information for real events can be incorporated into pictures of events.The studies reported here concern the depiction of age in drawings of animals in children's books. Specifically, they test the proposal that illustrators portray an animal's age by incorporating the changes in body proportions characteristic of actual growth into the drawings.From the perspective of the ecological approach to perception (Gibson, 1979), this proposal contains two assumptions about growth and its perception. The first is that there exist regularities in the visible patterns of growth. That is, there is visual information for the perception of growth. Second, detection of this information supports perception of growth and age. Prior research justifies these assumptions about the perception of human growth.