Polymorphisms in the androgen receptor gene AR, the dopamine receptor gene DRD4, and the 5-HTTLPR VNTR of the serotonin transporter gene might be associated with Life history strategy.

Type 1: Slow LHS, long term Time Orientation (TO). Emphasize behaviours and values that bring benefits in the future. It is associated with delayed sexual initiation. Type 2. fast LHS and short term TO. De-emphasize delay of gratification, risk avoidance, and a strong effort in modern education.