The ISTP personality type is considered to be relatively rare, making up about 5-6% of the population. ISTP stands for Introverted, Sensing, Thinking, and Perceiving. Here is a detailed description of the ISTP personality type:

1. Introverted (I): ISTPs are introverted individuals who tend to focus their energy inward. They gain energy from spending time alone and often prefer solitary activities. They are generally reserved and may take time to open up to others.

2. Sensing (S): ISTPs are highly observant and detail-oriented. They rely on their senses to gather information about the world around them. They are practical and prefer to deal with concrete facts and tangible experiences rather than abstract concepts.

3. Thinking (T): ISTPs are logical and analytical thinkers. They make decisions based on objective reasoning rather than emotions. They are often skilled at problem-solving and enjoy finding practical solutions to complex issues.

4. Perceiving (P): ISTPs have a flexible and adaptable approach to life. They prefer to keep their options open and enjoy spontaneity. They are often skilled at improvising and can quickly adjust to new situations.

ISTPs have several key traits that define their personality:

1. Independent: ISTPs value their independence and autonomy. They prefer to work alone and may become frustrated with too much structure or micromanagement. They enjoy having the freedom to explore their interests and pursue their own goals.

2. Hands-on and Practical: ISTPs are highly practical individuals who enjoy working with their hands. They are often skilled at fixing things, building, or tinkering with mechanical objects. They have a natural curiosity and enjoy understanding how things work.

3. Risk-takers: ISTPs are often drawn to high-risk activities and enjoy the thrill of adrenaline. They are typically calm under pressure and can think quickly in emergency situations. They are not afraid to take calculated risks and often excel in fields such as extreme sports, emergency services, or the military.

4. Reserved and Observant: ISTPs are generally quiet and reserved individuals. They prefer to observe their surroundings and gather information before taking action. They are excellent listeners and pay attention to details that others may overlook.

5. Private: ISTPs are private individuals who value their personal space and privacy. They may have a small circle of close friends and prefer to keep their emotions and personal life to themselves. They can be difficult to get to know but are loyal and trustworthy to those they consider close.

Overall, ISTPs are independent, practical, and adaptable individuals who excel in hands-on activities. While they may be rare, their unique combination of traits makes them valuable contributors to society in various fields.