Concealed ovulation forces male presence that solidifies paternal bonds

Evidence

In humans, however, females are potentially sexually receptive all the time, and males cannot reliably predict when their mate can get pregnant. So, by concealing ovulation at least partially, males are forced to be around their mates more often than they would otherwise and end up engaging in a lot of reproductively unnecessary sex. As a by-product, this extra “hanging around” his mate will further solidify his relationships with any offspring who are hanging around their mother. — Joseph Henrich, The Secret of Our Success, 986

Categorization

• XREF: connects to: Females pair-bond with males partly for their locally inherited knowledge — Joseph Henrich, The Secret of Our Success: How Culture…, 982; Male parental care can invert the direction of sexual selection and weaponry — Emlen, Douglas J, Animal Weapons_ The Evolution of Battle, 160; Parental care levels respond flexibly to changing reproductive conditions — Diego Gambetta, Trust - Making and Breaking Cooperative…, 406

Broader Connections

• Male parental care can invert the direction of sexual selection and weaponry #expands (0.80) — Emlen, Douglas J, Animal Weapons_ The Evolution of Battle, 160
• Parental care levels respond flexibly to changing reproductive conditions #qualifies (0.75) — Diego Gambetta, Trust - Making and Breaking Cooperative…, 406