Describes a study designed to compare color-name with shape-name learning by three-year-old children in an experimentally controlled format. Results show that children learned color-label associates significantly more slowly than matched shape-label associates, and they committed more errors with colors than with shapes during learning. Provides a…

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…