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Differential Psychology


differential psychology, branch of psychology that deals with individual and group differences in behaviour. Charles Darwin’s studies of the survival capabilities of different species and Sir Francis Galton’s researches on individual visual and auditory skills, as well as more recent experiments, have shown that both individual and group differences are quantitative rather than qualitative. Persons do not fall into sharply separated types, such as bright and dull, maladjusted and normal, introvert and extravert. On the contrary, in all psychological characteristics, individuals vary by degree along a continuous scale.

 
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De la Variation des Animaux et des Plantes Sous L'Action de la Dom...

By: Charles Darwin; Jean Jacques Moulinié
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De la Variation des Animaux et des Plantes Sous L'Action de la Dom...

By: Charles Darwin; Jean Jacques Moulinié
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The Descent of Man

By: Charles Darwin
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The Descent of Man and Selection in Relation to Sex

By: Charles Darwin
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The Descent of Man and Selection in Relation to Sex

By: Charles Darwin
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The Descent of Man and Selection in Relation to Sex

By: Charles Darwin
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The Effects of Cross and Self-Fertilisation in the Vegetable Kingdom

By: Charles Darwin
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The Effects of Cross and Self-Fertilisation in the Vegetable Kingdom

By: Charles Darwin
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Erasmus Darwin

By: Charles Darwin; William Sweetland Dallas, Translator
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Erasmus Darwin

By: Charles Darwin; Ernst Krause; William Sweetland Dallas, Translator
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Erasmus Darwin

By: Charles Darwin; William Sweetland Dallas, Translator
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Erasmus Darwin und Seine Stellung in der Geschichte der Descendenz...

By: Ernst Krause, Charles Darwin
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Erasmus Darwin und Seine Stellung in der Geschichte der Descendenz...

By: Ernst Krause, Charles Darwin
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Autobiography of Charles Darwin, The : Chapter 01 - The Autobiogra...

By: Charles Darwin

The Autobiography of Charles Darwin is the autobiography of the British naturalist Charles Darwin which was published in 1887, five years after his death. Darwin wrote the book, which he entitled Recollections of the Development of my Mind and Character, for his family. He states that he started writing it on about May 28, 1876 and had finished it by August 3. The book was edited by Charles Darwin's son Francis Darwin, who removed several passages about Darwin's critical...

Biography

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Autobiography of Charles Darwin, The : Chapter 02 - The Autobiogra...

By: Charles Darwin

The Autobiography of Charles Darwin is the autobiography of the British naturalist Charles Darwin which was published in 1887, five years after his death. Darwin wrote the book, which he entitled Recollections of the Development of my Mind and Character, for his family. He states that he started writing it on about May 28, 1876 and had finished it by August 3. The book was edited by Charles Darwin's son Francis Darwin, who removed several passages about Darwin's critical...

Biography

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Autobiography of Charles Darwin, The : Chapter 03 - The Autobiogra...

By: Charles Darwin

The Autobiography of Charles Darwin is the autobiography of the British naturalist Charles Darwin which was published in 1887, five years after his death. Darwin wrote the book, which he entitled Recollections of the Development of my Mind and Character, for his family. He states that he started writing it on about May 28, 1876 and had finished it by August 3. The book was edited by Charles Darwin's son Francis Darwin, who removed several passages about Darwin's critical...

Biography

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Autobiography of Charles Darwin, The : Chapter 04 - The Autobiogra...

By: Charles Darwin

The Autobiography of Charles Darwin is the autobiography of the British naturalist Charles Darwin which was published in 1887, five years after his death. Darwin wrote the book, which he entitled Recollections of the Development of my Mind and Character, for his family. He states that he started writing it on about May 28, 1876 and had finished it by August 3. The book was edited by Charles Darwin's son Francis Darwin, who removed several passages about Darwin's critical...

Biography

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Autobiography of Charles Darwin, The : Chapter 05 - The Autobiogra...

By: Charles Darwin

The Autobiography of Charles Darwin is the autobiography of the British naturalist Charles Darwin which was published in 1887, five years after his death. Darwin wrote the book, which he entitled Recollections of the Development of my Mind and Character, for his family. He states that he started writing it on about May 28, 1876 and had finished it by August 3. The book was edited by Charles Darwin's son Francis Darwin, who removed several passages about Darwin's critical...

Biography

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Autobiography of Charles Darwin, The : Chapter 06 - The Autobiogra...

By: Charles Darwin

The Autobiography of Charles Darwin is the autobiography of the British naturalist Charles Darwin which was published in 1887, five years after his death. Darwin wrote the book, which he entitled Recollections of the Development of my Mind and Character, for his family. He states that he started writing it on about May 28, 1876 and had finished it by August 3. The book was edited by Charles Darwin's son Francis Darwin, who removed several passages about Darwin's critical...

Biography

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The Autobiography of Charles Darwin

By: Charles Darwin

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