This is a bullshit study. It is entirely based on trying to confirm a priori assumptions about ”lonely” people, who are seen by authors as pathologically abnormal.

> Chronic loneliness is linked to mental health issues like depression and anxiety, as well as physical health problems, including weakened immunity, cardiovascular disease, and an increased risk of mortality. Lonely individuals tend to experience lower self-esteem, heightened sensitivity to social rejection, and difficulty forming or maintaining relationships. They may also perceive social interactions more negatively, creating a cycle that reinforces their isolation. In older adults, loneliness is particularly concerning, as it is strongly associated with cognitive decline and dementia. In children and adolescents, it can hinder social development and academic performance.

I think they are trying to learn more about it to see if there is something that can be done in cases where there are negative outcomes. Not where someone is alone and happy.