n her book, she discusses the groundbreaking work of psychologist John Gottman and his team. Over many years they observed hundreds of couples and noted their facial expressions, heart rates, blood pressure, skin conductivity, and the words they used in conversation with their partners. They discovered low-risk couples have more positive interactions with each other, and high-risk couples tend to spiral into negativity.
Source: A mathematical formula reveals the secret to lasting relationships – ScienceAlert
