Mario Ponzo
Encyclopedia
Mario Ponzo was an Italian
Italy
Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

 academic psychologist
Psychologist
Psychologist is a professional or academic title used by individuals who are either:* Clinical professionals who work with patients in a variety of therapeutic contexts .* Scientists conducting psychological research or teaching psychology in a college...

. He was born in Rome
Rome
Rome is the capital of Italy and the country's largest and most populated city and comune, with over 2.7 million residents in . The city is located in the central-western portion of the Italian Peninsula, on the Tiber River within the Lazio region of Italy.Rome's history spans two and a half...

 and studied under Federico Kiesow at Turin
Turin
Turin is a city and major business and cultural centre in northern Italy, capital of the Piedmont region, located mainly on the left bank of the Po River and surrounded by the Alpine arch. The population of the city proper is 909,193 while the population of the urban area is estimated by Eurostat...

 where, in 1911, he published an article in the journal Archives Italiennes de Biologie which presented the well-known optical illusion known as the Ponzo illusion
Ponzo illusion
The Ponzo illusion is a geometrical-optical illusion that was first demonstrated by the Italian psychologist Mario Ponzo in 1913. He suggested that the human mind judges an object's size based on its background. He showed this by drawing two identical lines across a pair of converging lines,...

. In the same year he wrote for the Atti della Regia Accademia delle Scienze di Torino what has been described as the first article in Italian on psychology and the cinema. In 1931 he succeeded Sante De Sanctis
Sante De Sanctis
Sante De Sanctis was an Italian doctor, psychologist and psychiatrist. He is considered as one of the founders of the Italian psychology and neuropsychiatry.-References:...

 to the chair in psychology at the Università degli studi di Roma "La Sapienza".
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