The question "How do you think?" is one that comes up sometimes, and I always kind of struggle with it. I'm not really sure how I think when I'm not thinking about thinking. If that makes sense.
If I need to do some reasoning or planning, I'm not sure if it's in words or pictures. Or neither. I'm pretty sure it's more visual. Come to think of it, I don't think I'm particularly good at reasoning and planning. I managed to get a university degree, but mostly because I'm good at writing in a way that makes professors think I'm actually learning something. I haven't been able to plan my days or my life for toffee.
Okay, right now, I'm stopping for a moment to think about what I might make for dinner tomorrow. I don't get any words in my mind at all, but I see myself picking out some kind of beef from the meat department at Safeway, and I can also see some roast potatoes, carrots, and onions, like a stew of some sort. That's what we had a few nights ago, so it's not much of a "plan". But I suppose it's all visual.
If I imagine my mother-in-law, I see an image of her, like a movie, and heard her talking, "I'll just put the kettle on, if that's alright." I don't get any words or sentences in my head, though, other than that. I'm not hearing, "Mother-in-law" or "I am thinking about my mother-in-law. She wears glasses and likes her tea very weak." Nothing like that.
I do sometimes have an internal dialogue, but I use that more for entertainment than figuring things out. It's kind of like creative writing without the writing part.