Answer:
According to the expert Laura Carstensen, it happens in the older adult stage.
Step-by-step explanation:
Laura Carstensen founded the Stanford Longevity Center and is known for her theory of socio-emotional selectivity, where she establishes the changes people have in adulthood in terms of social priorities, emotions, and cognitive evolution.
In the research conducted by Laura Carstensen on how people with different ages experience friendships, she concluded that the older the adult tends not to look for new friends, as they are fine with their close group of friends.
Carstensen also observed in his study that older adults tend to have less intense emotions with new friends and have a stable level in their positive emotions with their friends, all this because of the difference in perception at each stage of life.
I hope this information can help you.