It may occur that people with high IQ take time to make decisions or answer questions, due to a more in-depth analysis of all the surrounding variables.
Your brain examines all hypotheses because it operates under a common logic — a denominator. This implies a mathematical relationship, involving logic, possibilities and probabilities, even if the person is not necessarily a mathematician.
Perfectionism, a common personality trait among these people, can make a decision seem less assertive, as they consider multiple probabilities and environmental interference.
Sometimes, a simple question that would require an uncomplicated decision can turn into a source of “torment”, with excessive reflection on the answer and its potential consequences, causing unnecessary worry.