Verbal Expression
If given a choice, introverts would rather express their ideas in writing than in speech. When they do speak, they need time to think before answering a question. Sometimes they even feel the need to mentally rehearse what they want to say before they say it. The need to think before speaking often results in the introvert being slow to respond to questions or comments. When they talk, they may also pause quite often and even have problems finding the right word.