>What makes a person want to belong to one group and not others? When do they feel they belong?
I should know Maslow's since I did study it in class a while ago. Personally, I feel people belong to certain groups because of... say, shared interests, can't think of any other reason as to how to belong at the moment, sorry. When do they feel they belong? When they have gotten to know people in said group, or the group takes interest and active discussion on a topic that all parties enjoy, then it becomes an easier social environment to be in, imo.
>When do you feel alone? Do you ever feel not alone even when no one is physically close?
At a lot of random intervals during the day. Sometimes when there is no one physically around, I am not lonely but, again, the feeling sparks up after a while.
>The feeling flares up when I haven't had social contact with someone in any time frame and it leads me into a general down mood.
You could say that, yeah.
>Would you say being slow to warm up, and introversion are the same thing?
Introverts just prefer more portions of solitude if anything, which is what I experience as well - sometimes I like to be left alone for a bit, or not participate in anything social. As to warming up to people, it depends on the person. For some it's quick and for some it's slow, as everyone is different in that regard. For me it's in-between.
>That's an interesting perspective. I've never heard the suggestion that sometimes lonely people need to be given more space...
Then again we need to take in other factors as well, like personal characteristics outside the 'loneliness' thought.