Introvert or extrovert

After taking a few online psychological tests, I become convinced that I have a pretty introverted personality. I have learnt to hide it, however, and sometimes behave as if I were an extrovert:

I like getting my energy from dealing with the ideas, pictures, memories, and reactions that are inside my head, in my inner world. I often prefer doing things alone or with one or two people I feel comfortable with. I take time to reflect so that I have a clear idea of what I’ll be doing when I decide to act. Ideas are almost solid things for me. Sometimes I like the idea of something better than the real thing (quoted from here).

This is probably why I prefer to continue my life-long habit of reading, thinking and writing—now about my life course, and about autobiography, memory, self-therapy, and graceful ageing—instead of just doing all thosefun extroverted activites that senior citizens are supposed to do together.