Compares the logical abilities of six-year-old children with those of squirrel monkeys by using the five-term transitivity problem. Both binary and triadic versions of the tests were administered in both verbal and nonverbal modes. Children showed response profiles very similar to those of monkeys in all the conditions used. (Author/CI)

Describes two studies that demonstrate young children's perception of color materials differs from that of adults in two ways: (1) the stimulus dimensions of hue, chroma, and value appear to result in somewhat more separable perception for young children than for adults, and (2) the perceived similarities the color materials are not the same for…

Two experiments examined developmental changes in reasoning about intensive quantities--predicting mixture intensity of pairs of liquids with different intensities of red color. Results showed that cognitive averaging in this domain developed late and slowly. Predominating up to 12 years was an extensivity bias, a strong tendency to use rules that…