about face, to do an

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about face, to do an

To reverse a decision or change one’s opinion. The term comes from the American military command to turn 180 degrees at attention, dating from the mid-nineteenth century, and by 1900 was being used figuratively. A more recent colloquial usage is to do a 180, but it has not yet reached cliché status.
References in periodicals archive ?
But he says the police officer super recognizers seem to have a disproportionate advantage over others for gleaning information about faces as they scan video images or watch people in motion.
She is combining cognitive psychology with techniques like brain imaging and electrophysiology to study how the brain processes information about faces. Her most recent research on the brain's face-processing mechanisms appears in the Journal of Neuroscience and Human Brain Mapping.
"Perhaps we're looking at how innate knowledge about faces changes over time due to visual experience," Pascalis says.
However, Quinn suspects that face recognition arises from babies' innate preferences for certain perceptual features, such as curved contours, rather than from more complex innate knowledge about faces, as other scientists suspect (SN: 7/7/01, p.
"These data point to the centrality of eye [contact] in learning about faces and establishing facial preferences in 2- and 3-month-olds," say Elliott M.