Manning (biological sciences, University of Liverpool) argues that the relative lengths of the second and fourth fingers are genetically linked to hormone- and sex-related traits, and by extension with sperm counts, family size, musical genius, sporting prowess, autism, depression, homosexuality, heart problems, and breast cancer. He suggests that the study of the ratio between the lengths of the second and fourth finger can broaden our understanding of human ability, behavior, and health. Three photographs, 38 figures, and eight tables are included. Annotation copyrighted by Book News Inc., Portland, OR.
In this book, Manning presents evidence for how 2D:4D correlates with traits ranging from sperm counts, family size, musical genius, and sporting prowess, to autism, depression, homosexuality, heart attacks, and breast cancer, traits that ...
Digit Ratio: A Pointer to Fertility, Behavior, and Health
The Relationship Between the Digit Ratio (2D: 4D) and Explosive Muscular Strength in College Football Players
Relationships Between the Digit Ratio (2D: 4D) and Game-related Statistics in Professional and Semi-professional Male Basketball Players
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