The researchers at the University of Vienna have found that women with low 2D:4D ratios tend to have stronger grip strength than women with higher ratios.

The 2D:4D ratio is the most studied digit ratio and is calculated by dividing the length of the index finger of a given hand by the length of the ring finger of the same hand.

Over the past 20 years, more than 1400 papers have been published linking finger lengths to personality, sexual orientation, cardiovascular disease, cancer, and more.

In their paper published in Proceedings of the Royal Society B, Nora Bäck, Katrin Schaefer and Sonja Windhager describe measuring finger length and grip strength in volunteer women.

The work by the researchers involved measuring ring and index finger length in 125 healthy women in Austria selected after factoring out age, environment, ethnicity and exercise as possible impactors of finger length. Each woman also had her hand grip strength measured using a dynamometer.

Women with a lower 2D:4D ratio tended to have higher grip strength than women with a higher 2D:4D ratio, the researchers found.

In other words, women who have an index finger that’s shorter than their ring finger could actually have more muscles and strength.

A lower 2D:4D ratio — and higher prenatal testosterone exposure — is linked to higher grip strength in adulthood.

Earlier this year, researchers in Scandinavia found hungry people with low 2D:4D digit ratios “make more masculine food choices.”

Also this year, Swansea University researchers found children born to a mother with an above-average income had a lower 2D:4D digit ratio.

Take a look: Is your index finger longer than your ring finger?

To measure your finger, straighten it and look at the palm of your hand.

At the base of your index and ring fingers there are likely to be creases. Your index finger is likely to have one crease, the ring finger is a band of creases.

Select the crease closest to the palm and choose a point on the crease midway across the base of the finger.

Mark it with a pen. Measure it from the mark to the tip of the finger.

It turns out that most people have slightly longer ring fingers than index fingers, and in men the difference is a bit larger. If the ringer finger is longer, than the 2D:4D ratio is less than one. One recent study reported that this ratio was 0.947 in men and 0.965 in women.

Words to Learn 相关词汇

【排除因素】páichú yīnsù factor out reanalyze a situation or problem in order to remove something from consideration

【皱褶】zhòuzhě crease wrinkle

来自奥地利维也纳大学的研究团队发现了第2和第4根手指长度的比率关系低的女性通常手掌握力更大。

2D:4D比值是最常被研究的数字比值之一，它的计算方法是将某只手的食指长度除以同一只手的无名指长度。

过去20年间，有超过1400篇已发表的论文表明，手指长度和性格、性取向、心血管疾病、癌症等等有关联。

在《英国皇家学会学报B辑》上发表的论文中，诺拉•巴克、卡钦•沙菲和索尼娅•文德格描述他们对女性志愿者进行了手指测量和握力测试。

研究人员测量了125名健康奥地利女性的无名指和食指长度，并用测力计测试了她们的握力。实验尽可能排除了不同年龄、环境、种族和锻炼等情况的影响。研究人员发现2D:4D比例较低的女性往往握力更高。

换句话说，无名指比食指长表明握力更强、肌肉更健康。

2D:4D比率越低，胎儿在子宫内接触到更多的睾酮，因此长大后握力更高。

今年早些时候，斯堪的纳维亚的研究人员发现，2D:4D数字比率低的人在饥饿时“会选择更男性化的食物”。

同样在今年，斯旺西大学的研究人员发现，收入高于平均水平的女性所生的孩子的2D:4D数字比率更低。

看一看，你的食指比无名指长吗？

测量手指时首先把手伸直，观察一下自己的手掌。

食指和无名指指根部有关节褶皱。你的食指可能有一条关节褶皱，无名指有多条褶皱。

选择离手掌最近的褶皱的中间点。

用笔做个记号。测量从该点到指尖的长度。

事实上大部分人的无名指比食指稍长一点点，男性的个体区别更明显。如果无名指长，那么2D:4D比率就小于1。最近一项研究发现这个比例在男性的平均值是0.947，在女性的平均值是0.965。

(chinadaily.com.cn)