Meanings of become introverted in English

We have become introverted and paranoiac.

I think for a long time, I closed up and became introverted.

She became introverted and skipped classes, her friends say.

I became introverted, unsure of myself.

It wasn't until after a series of traumatic events battered the Stallman household, she says, that her son became introverted and emotionally distant.