The Thatcher effect or Thatcher illusion is a phenomenon where it becomes more difficult to detect local feature changes in an upside-down face, despite identical changes being obvious in an upright face. It is named after the late British prime minister Margaret Thatcher, on whose photograph the effect was first demonstrated. The effect was originally created in 1980 by Peter Thompson, Professor of Psychology at the University of York.
|is dbo:wikiPageDisambiguates of|
|is dbo:wikiPageRedirects of|
|is dbo:wikiPageWikiLink of|
|is foaf:primaryTopic of|