Introverts and Vebal Communication
Introverts are more apprehensive towards communication than their extroverted counterparts and given the distinguishing characteristics of introverts and extroverts this is not surprising. Introverts do not actively seek out people as frequently as extroverts and at time will take steps to avoid communication. Though this is only considered a problem through the eyes of an extrovert.
Many times introverts are apprehensive of social situations because they are expected to act as an introvert. Introverts will contribute to conversations, but not as openly or freely as an extrovert; and to any introvert this is normal.
Introverts and extroverts respond differently in conversations because they process information differently. During a conversation an introvert will absorb the information and then consider it alongside their ideas, any additional information and past experiences before being ready to contribute to the conversation. This can be an advantage as they are able to think through ideas, but in a fast paced conversation the topic may change before an introvert has organized their thoughts and therefore they do not join in the conversation.
Generally extroverts are comfortable thinking out loud. So what an extrovert is doing externally, an introvert will do internally.
Extroverts are able to think on their feet much more effectively than an introvert enabling them to contribute more in conversations. An extrovert has no problem keeping up with a fast paced conversation and may wonder why an introvert is silent.