The Mooney Face Test was developed by Craig Mooney and his results published in 1957 as “Age in the development of closure ability in children.” In the test, participants are shown low-information two-tone pictures of faces, and are asked to identify features and distinguish between real and "false" faces. Since facial recognition occurs mainly in the right hemisphere

Lateralization of brain function

A longitudinal fissure separates the human brain into two distinct cerebral hemispheres, connected by the corpus callosum. The sides resemble each other and each hemisphere's structure is generally mirrored by the other side. Yet despite the strong anatomical similarities, the functions of each...

 of the brain, it is a test of right-brain functionality and a concept he called "perceptual closure," or the ability to form coherent mental pictures with very little visual information.