Helen Fisher: How we choose who we love

<p>Anthropologist Helen Fisher has long been trying to answer the question: why do you fall in love with one person rather than another? Her research says we've evolved four basic styles of thinking and behaving linked with the dopamine, serotonin, testosterone, and estrogen systems. Fisher used that research to create a questionnaire that's been taken by 15 million people in 40 countries, shedding light on how we choose our mates.</p><p>She's also one of the experts behind the Singles in America survey from Match.com, the most recent of which shows that people are using AI in online dating...