Mate Retention Strategies.

• Wilson and Daily identify several mate retention strategies, including direct guarding and negative inducements.
• Direct guarding includes excessive male vigilance over their partner's behaviour, eg. checking who they have been seeing or keeping tabs on their whereabouts.
• Negative inducements includes issuing threats of dire consequences for infidelity, eg. "I will hurt you/myself if I see you with another man."
• Mate retention strategies eventually pave the way for aggression.