WIKIPEDIA: The Mooney Face Test, developed by Craig M. Mooney, was first introduced in his 1957 article “Age in the development of closure ability in children.” Participants in the test are shown series of black and white distorted photographs, presented in such a way that would require them to perform closure. The law of closure is one of the seven Gestalt principles that describes a tendency of our perception to view an incomplete object as continuing and complete. The test assumes that perception is based on the collected information taken from the different regions of the image, which then constitute a holistic representation of a face.Today, there are many iterations of the Mooney Face Test, a number of which contain images that involve image color inversion and facial feature scrambling.