Digit ratio (2D:4D) and Cattell's personality traits

@article{Lindov2008DigitR,
  title={Digit ratio (2D:4D) and Cattell's personality traits},
  author={Jitka Lindov{\'a} and Martina Hru{\vs}kov{\'a} and Věra Pivoňkov{\'a} and Ale{\vs} Anton{\'i}n Kuběna and Jaroslav Flegr},
  journal={European Journal of Personality},
  year={2008},
  volume={22},
  pages={347 - 356}
}
The ratio between second and fourth finger (2D:4D) is sexually dimorphic; it is lower in men than in women. Studies using broad personality domains yielded correlations of 2D:4D with neuroticism, extraversion or agreeableness, but the obtained results have been inconsistent. We correlated 2D:4D of 184 women and 101 men with their scores in Cattell's 16 Personality Factor (16PF) Questionnaire. We found women with a higher (more ‘feminine’) right hand 2D:4D to score lower in emotional stability… 
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