Testosterone at your fingertips: Digit ratios (2D:4D and rel2) as predictors of courtship‐related consumption intended to acquire and retain mates
研究发现，男性指长比（低值）和女性指长比（高值）分别与求偶消费相关，前者用于获取伴侣，后者用于保留伴侣，且受求偶信心影响。
Abstract While hormones have been shown to impact a wide range of behaviors, little is known regarding their influence on consumer behavior. The current research examines the association between digit ratios and courtship‐related consumption. Digit ratios (2D:4D and rel 2) are indicators of prenatal testosterone exposure and are assessed by measuring finger length. In Study 1, masculinized digit ratios (low digit ratios, high prenatal testosterone) in men were associated with greater courtship‐related consumption to acquire mates, and this association was stronger for men with high mating confidence. In women, feminized digit ratios (high digit ratios, low prenatal testosterone) were associated with greater courtship‐related consumption to acquire mates. In Study 2, men with masculinized digit ratios engaged in greater courtship‐related consumption by offering romantic gifts as a means of retaining mates. In women, feminized digit ratios were associated with greater romantic gift giving. Our findings suggest that high prenatal testosterone in men leads to greater courtship‐related consumption, whereas low prenatal testosterone leads to greater courtship‐related consumption in women.