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The examination of personality and individual differences is a major field of research in the modern discipline of psychology. Concerned with the ways humans develop an organised set of characteristics to shape themselves and the world around them, it is a study of how people come to be 'different' and 'similar' to others, on both an individual and a cultural level. This volume focuses on the multiple origins of personality and individual differences, in chapters arranged across three thematic sections: Part 1: Biological Origins of Personality and Individual Differences Part 2: Developmental Origins of Personality and Individual Differences Part 3: Environmental Origins of Personality and Individual Differences With outstanding contributions from leading scholars across the world, this is an invaluable resource for researchers and graduate ...

Digit Ratio and Personality and Individual Differences
Digit Ratio and Personality and Individual Differences
John T. Manning Bernhard Fink

The current interest in 2D:4D began with Manning et al. (1998) who suggested that 2D:4D was negatively correlated with prenatal testosterone (PT) and positively correlated with prenatal estrogen (PE). In support of this, they reported that 2D:4D was sexually dimorphic (2D:4D males < females), the dimorphism was stable across age groups two years to 25 years and was not affected by puberty, and low 2D:4D (particularly right 2D:4D) was associated with high sperm number. Subsequently, it has become apparent that the sex difference in 2D:4D is determined by the end of the first trimester (Galis et al., ...

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