# data[].attributes.headline
Hippocrates argues that the brain is responsible for thought and emotion rather than the heart (Circa 300 BC)

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Hippocrates argues that the brain is responsible for thought and emotion rather than the heart (Circa 300 BC)

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The first mental hospital opens in London (1547)

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The first mental hospital opens in London (1547)

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Wilhelm Wundt opens first laboratory dedicated to studying psychology (1879)

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Wilhelm Wundt opens first laboratory dedicated to studying psychology (1879)

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William James publishes 'The Principles of Psychology' (1890)

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William James publishes 'The Principles of Psychology' (1890)

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Sigmund Freud lays foundation for modern psychoanalysis (1895)

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Sigmund Freud lays foundation for modern psychoanalysis (1895)

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Donald Triplett is the first person to be diagnosed with autism (1936)

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Donald Triplett is the first person to be diagnosed with autism (1936)

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Hans Asperger introduces Aspergers Syndrome (1944)

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Hans Asperger introduces Aspergers Syndrome (1944)

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The first version of ethical guidelines for psychology experiments is published (1952)

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The first version of ethical guidelines for psychology experiments is published (1952)

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The first edition of the DSM is published (1952)

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The first edition of the DSM is published (1952)

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French physician Jérôme Lejeune identifies Down syndrome as a chromosomal condition in which individuals have 47 chromosomes instead of 46 (1959)

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French physician Jérôme Lejeune identifies Down syndrome as a chromosomal condition in which individuals have 47 chromosomes instead of 46 (1959)

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Jane Elliot conducts her blue eyes/brown eyes experiment on racism (1968)

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Jane Elliot conducts her blue eyes/brown eyes experiment on racism (1968)

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Aspergers Syndrome is added to the DSM (1994)

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Aspergers Syndrome is added to the DSM (1994)

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DSM puts all subcategories of autism into the umbrella term of Autism Spectrum disorder (2013) 

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DSM puts all subcategories of autism into the umbrella term of Autism Spectrum disorder (2013) 