Fetuses are exposed to prenatal androgens as early as 8 weeks into development. Male fetuses are exposed to much higher levels of androgens than female fetuses. It’s been found that toy preferences, play-mates, and play-styles vary with the child’s exposure to androgens. Regardless of the biological sex of the child, increased androgen exposure is associated with more masculine-type behaviours, while decreased androgen exposure is associated with more feminine-type behaviours.