Your brother sounds a bit like my friend. My friend is calm and collected when faced with situations like that, and he uses fewer words. However, I don't know about the 'dare devil' part and I still get a feeler vibe from him.My brother tests as ISTP, and to a stranger, I think it would be very hard for them to detect the differences between him and I. We can appear very similar in many ways. . . we're both easy-going, reserved people who like to have fun and joke around.
The main difference between my brother and I is he does not let emotions get in the way of his actions. One example, when we're told our flight is cancelled after hours of delays, I start to get angry with the airline employees, which really is useless in the end, but I can't help it because I feel mad. My brother also feels mad, but he remains cool and calm while dealing with the airline employees. He can control his emotion and not let it interfere with the task at hand.
Also, I notice in the ISTP forum they have a thread for ISTP one-liners, and I can totally see this with my brother. Even though we're both quiet and reserved, he seems to use even fewer words than I do when communicating. He's clear, concise, and to the point, so he doesn't need many words.
One more thing, we both love adrenaline, but he really takes it to the extreme, compared to me. He's the ultimate dare-devil. This probably has something to do with him not letting his fear get in the way of his actions.
Hope this helps.
A lot of ISTP's aren't the dare devil types you read about. Generally, ISTP's are a bit bolder with words, but there are sizeable number that don't like physical risk taking. Personally, I only do it some of the time.Your brother sounds a bit like my friend. My friend is calm and collected when faced with situations like that, and he uses fewer words. However, I don't know about the 'dare devil' part and I still get a feeler vibe from him.