Brief Communication: Latent Toxoplasmosis and Salivary Testosterone Concentration - Important Confounding Factors in Second to Fourth Digit Ratio Studies

Abstract

Our results showed that the relationship between age and sex and 2D:4D ratio increased sharply when Toxoplasma infection and testosterone concentration were controlled.

Keywords

• infection
• postnatal changes
• Toxoplasma
• androgens
• 2D:4D
• finger-length ratios
• sexual-dimorphism
• gender-differences
• Jamaican children
• 4th-digit ratio
• women
• men
• 2nd-digit
• orientation
• asymmetry