Figure 10.5 The light box and tools used in the study by Barrett, Davis, and Needham (2007) Twelve-and eighteen-month-old children used the novel tool to turn on the light, but displayed “functional fixedness” with the spoon, failing to use it in a novel way.
(Adapted from Barrett, T. M., David, E. F., & Needham, A. (2007). Learning about tools in infancy. Developmental Psychology, 43, 352-368. Copyright © American Psychological Association.)