Differential Psychology (2,589 Books)


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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Memoir of the Rev. John Stevens Henslow

By: Leonard Jenyns, John Stevens Henslow, Charles Darwin

Includes recollections of John Henslow by Charles Darwin, p. 51-55.

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Narrative of an Explorer in Tropical South Africa: Being an Accoun...

By: Sir Francis Galton
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Narrative of an Explorer in Tropical South Africa: Being an Accoun...

By: Sir Francis Galton
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Natural Inheritance

By: Francis Galton
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Natural Inheritance : Volume 42; Volume 590

By: Sir Francis Galton
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Record of Family Faculties : Consisting of Tabular Forms and Direc...

By: Sir Francis Galton
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The Art of Travel, Or, Shifts and Contrivances Available in Wild C...

By: Francis Galton
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English Men of Science : Their Nature and Nurture

By: Sir Francis Galton
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English Men of Science : Their Nature and Nurture

By: Sir Francis Galton
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Hereditary Genius : An Inquiry into Its Laws and Consequences

By: Francis Galton
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The Life and Letters of Charles Darwin Including an Autobiographic...

By: Charles Darwin; Francis Darwin
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Record of Family Faculties

By: Francis Galton
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Vacation Tourists and Notes of Travel in 1860, 1861, 1862-3

By: Francis Galton
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The Life and Letters of Charles Darwin Including an Autobiographic...

By: Charles Darwin

TABLE OF CONTENTS. VOLUME II. CHAPTER 2.I. -- The Publication of the ’Origin of Species’ -- October 3, 1859, to December 31, 1859. CHAPTER 2.II. -- The ’Origin of Species’ (continued) 1860. CHAPTER 2.III. -- The Spread of Evolution -- 1861-1862. CHAPTER 2.IV. -- The Spread of Evolution. ’Variation of Animals and Plants’ -- 1863-1866. CHAPTER 2.V. -- The Publication of the ’Variation of Animals and Plants under Domestication’ -- January 1867-June 1868.

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A Monograph on the Sub-Class Cirripedia : With Figures of All the ...

By: Charles Darwin
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A Monograph on the Sub-Class Cirripedia : With Figures of All the ...

By: Charles Darwin
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A Monograph on the Sub-Class Cirripedia : With Figures of All the ...

By: Charles Darwin
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A Monograph on the Sub-Class Cirripedia : With Figures of All the ...

By: Charles Darwin
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A Monograph on the Sub-Class Cirripedia : With Figures of All the ...

By: Charles Darwin
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A Naturalist's Voyage : Journal of Researches into the Natural His...

By: Charles Darwin
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