The first word of a sentence. Accented syllables of words. Longer words, vs shorter words. Type of stuttering behavior were a persons speech will stop. The person appears to be attempting to produce a word or sound however, no sound will come out.
Blocks can occur at any time in a conversation.
Sometimes they are called silent blocks. Type of stuttering behavior where a word or part of a word is said several times. Its considered stuttering when the stuttered word is said more that four times. Type of stuttering behavior when a word or sound is made longer than it is during a conversation. Sometimes called a prolongation.