I know I've taken this test before in the past, but by age 60 I already know my personality: schizoid. I've really only known for a few years, but finding out was a real eye-opener for me and it explained so much about my life all the way from a little boy.
I prefer my own company to that of others and I prefer to do things on my own. I prefer to stay home as opposed to doing things, but I do enjoy a walk late at night or in the very early morning when there is nobody else around. I'm alone but not lonely.
I have no friends in the sense of what most people would describe as a "friend". I am neither cold and aloof, nor unfriendly, but I will only rarely say "hi" first, but when I respond I will sound like I mean it. I won't ask "how are you" because I'm really not that interested (most people are not really interested in how you are anyways). I live in the same city as my younger brother and sister, but I haven't seen either one in a few years. I'm not mad at them, it's just that I prefer to keep to myself and not get sucked into their lives.
I am a secret or covert schizoid, though. I am neither shy nor introverted and will choose to talk to people, even complete strangers--commenting on something, making a situational joke. The thing is that it is my choice--some of these people I will never see again, and I won't have to have any kind of relationship with any of them. I am not antisocial, I am non-social. I do well with one person or a few people, more than that prefer to be elsewhere. Choosing where to sit in a room--its in the back corner where everyone else is in front of me.
Strangely enough (to me, at least) I am both well-liked and respected at work. I think people where I work, fellow employees and residents (I work at a homeless shelter) take my quietness and reserve for being deep somehow (perhaps it is). But I'm winding up my job (it's just a job, not a career-I've never had a career) and looking forward to retiring in a few years and avoiding people as much as possible.