I do make decisions very quickly that they might look like acting on impulses. Somehow, my deep understanding of the content gives me an answer pretty quickly which I know to be correct and I quickly act on it. However, I wouldn't call it an impulsive streak.
I've got a fairly large impulsive streak when it comes to some things or certain situations. My SO is INTJ too and is possibly the most impulsive person I know. Example: a couple of months ago, he bought a brand new truck spur of the moment.
I would have to say that I'm not at all impulsive. I'm in a job that can at times require a quick response to things, as others have noted, it's not the same thing. Spur of the moment impulses are rare, although I can usually suggest something crazy, like going out. However, if the other person, say, takes too long getting ready, then I'll nix that thought.
I find that stress can also be a motivator for being impulsive, at least in me.
Although I have found myself in situations in which I felt compulsion to make a decision I had yet to think out, I had always given myself a respective amount of time to mull over the decision before finalizing it. Wasted efforts and resources bother me.
Not really. Like everyone else has said, I usually make a quick decision that can look impulsive. When I make a quick decision I already have a framework in place to base it on, e.g. when I buy a book I didn't budget for...no wait...when I buy an extra book I didn't budget for it's because I always have my budget in the back of my mind and can quickly rearrange things in order to fit it in.
I agree with Snowguard, stress can make one impulsive. Having loads of spare cash can do that too, but luckily I don't suffer from that :tongue: