For example, when two people fall in love and get married, they usually do so after investing a certain amount of time and energy in one another. Since one or both people will probably have to go out and work, they will not be able to spend all their time together. The time that they will spend will be limited, maybe even more limited than the time that was spent before they got married. But the time and energy that was necessary to establish the strong mental and emotional connection upon which the relationship is based has already been invested. So, in this case, people might spend what could be called quality time.
Children are different from grown-ups.
In order to establish a strong mental and emotional connection with a child, a parent would need to invest a minimum of seven years of involvement. So, when parents have a child and one of them, usually the mother, stays home for six weeks and then returns to work, a strong mental and emotional connection between that parent and child has not been established. In fact, if that parent stays home for two full years, it is not enough to establish such a connection. Seven years of involvement is the minimal requirement for any parent to establish a strong mental and emotional connection between parent and child. A strong mental and emotional connection here refers to a relationship in which each person has an extreme interest in the well-being and satisfaction of the other.